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Featured Papers

  • Kei Sakaguchi, Takumi Yoneda, Masashi Iwabuchi, Tomoki Murakami, “mmWave massive analog relay MIMO“, ITU J-FET, vol.2, issue 6, Sep. 2021.
  • Kei Sakaguchi, Ryuichi Fukatsu, Tao Yu, Eisuke Fukuda, Kim Mahler, Robert Heath, Takeo Fujii, Kazuaki Tahakashi, Alexey Khoryaev, Satoshi Nagata, Takayuki Shimizu, “Towards mmWave V2X in 5G and Beyond to Support Automated Driving“, IEICE Trans. Commun., vol.E104-B, no.6, pp.587-603, Jun. 2021.
  • Kei Sakaguchi, Thomas Haustein, Sergio Barbarossa, Emilio Calvanese Strinati, Antonio Clemente, Giuseppe Destino, Aarno Pärssinen, Ilgyu Kim, Heesang Chung, Junhyeong Kim, Wilhelm Keusgen, Richard J. Weiler, Koji Takinami, Elena Ceci, Ali Sadri, Liang Xain, Alexander Maltsev, Gia Khanh Tran, Hiroaki Ogawa, Kim Mahler, Robert W. Heath Jr. “Where, When, and How mmWave is Used in 5G and Beyond“, IEICE Trans. Electron., vol. E100-C, no. 10, pp. 790-808, Oct. 2017. (Invited)
  • Kei Sakaguchi, Gia Khanh Tran, Hidekazu Shimodaira, Shinobu Namba, Toshiaki Sakurai, Koji Takinami, Isabelle Siaud, Emilio Calvanese Strinati, Antonio Capone, Ingolf Karls, Reza Arefi, Thomas Haustein, “Millimeter-wave evolution for 5G cellular networks“, IEICE Trans. Commun., vol.E98-B, no.3, pp.1-12, Mar. 2015.
  • Kei Sakaguchi, Ehab Mahmoud Mohamed, Hideyuki Kusano, Makoto Mizukami, Shinichi Miyamoto, Roya E. Rezagah, Koji Takinami, Kazuaki Takahashi, Naganori Shirakata, Hailan Peng, Toshiaki Yamamoto, Shinobu Namba, “Millimeter-wave wireless LAN and its extension toward 5G heterogeneous networks“, IEICE Trans. Commun., vol.E98-B, no.10, pp.1932–1948, Oct. 2015.

 


2022 Fiscal Year

Transactions and Letters

  • Kazuki Maruta, Hiroaki Nishiuchi, Jin Nakazato, Gia Khanh Tran, Kei Sakaguchi. “5G/B5G mmWave Cellular Networks with MEC Prefetching Based on User Context Information”, MPDI Sensors, Sept. 2022.
  • Jin Nakazato, Zongdian Li, Kazuki Maruta, Keiichi Kubota, Tao Yu, Gia Khanh Tran, Kei Sakaguchi, Soh Masuko. “MEC/Cloud Orchestrator to Facilitate Private/Local Beyond 5G with MEC and Proof-of-Concept Implementation,” MPDI Sensors, Vol. 22, No. 14, July 2022.
  • Amr Amrallah, Ehab Mahmoud Mohamed, Gia Khanh Tran, Kei Sakaguchi. “UAV Trajectory Optimization in a Post-Disaster Area Using Dual-Energy-Aware Bandits”, Sensors 2022, MDPI, Jan. 2023.

International Conference

  • Omar Hashash, Christina Chaccour, Walid Saad, Kei Sakaguchi, Tao Yu. “Towards a Decentralized Metaverse: Synchronized Orchestration of Digital Twins and Sub-Metaverses”, 2023 IEEE International Conference on Communications (ICC), May 2023.
  • Tao Yu, Kento Kajiwara, Kiyomichi Araki, Kei Sakaguchi. “Experiment of Multi-UAV Full-Duplex System Equipped with Directional Antennas”, 2023 IEEE 20th Annual Consumer Communications & Networking Conference (CCNC), Jan. 2023.
  • Zongdian Li, Tao Yu, Taisei Suzuki, Kei Sakaguchi. “Building an SDVN Framework for RSU-Centric Cooperative Perception with Heterogeneous V2X”, 2023 IEEE 20th Annual Consumer Communications & Networking Conference (CCNC), Jan. 2023.
  • Kazuma Nonomura, Tao Yu, Kei Sakaguchi. “Reshape Car-Sharing System for Super Smart Society: A Digital Twin-Based Method and Implementation”, 2023 IEEE 41st International Conference on Consumer Electronics (ICCE2023), Jan. 2023.
  • Hiroki Matsuo, Tao Yu, Kei Sakaguchi. “Design of Advanced Intersection Systems Utilizing V2X in an Automated Society”, 2023 IEEE 41st International Conference on Consumer Electronics (ICCE2023), Jan. 2023.
  • Amr Amrallah, Ehab Mahmoud Mohamed, Gia Khanh Tran, Kei Sakaguchi. “Dual Energy-Aware based Trajectory Optimization for UAV Emergency Wireless Communication Network: A Multi-armed Bandit Approach”, 2022 Thirteenth International Conference on Ubiquitous and Future Networks (ICUFN), IEEE, pp. 43-48, July 2022.
  • Tao Yu, Kiyomichi Araki, Kei Sakaguchi. “Full-Duplex Aerial Communication System for Multiple UAVs with Directional Antennas”, 2022 IEEE 19th Annual Consumer Communications & Networking Conference (CCNC), Jan. 2022.
  • Yue Yin, Tao Yu, Kei Sakaguchi. “Required-Data-Rate-Based Distributed Resource Allocation Scheme for MmWave V2V with Relay”, 2022 IEEE 19th Annual Consumer Communications & Networking Conference (CCNC), Jan. 2022.
  • Tao Yu, Kiyomichi Araki, Kei Sakaguchi. “Ground Experiment of Full-Duplex Multi-UAV System Enabled by Directional Antennas”, 2022 IEEE 12th Annual Computing and Communication Workshop and Conference (CCWC), Jan. 2022.
  • Tao Yu, Kento Kajiwara, Kiyomichi Araki, Kei Sakaguchi. “Spectrum Sharing between Directional-Antenna-Equipped UAV System and Terrestrial Systems”, 2022 IEEE 12th Annual Computing and Communication Workshop and Conference (CCWC), Jan. 2022.

Domestic Conference

  • 松尾大樹, 阪口啓, 于韜. “自動運転社会におけるV2Xを活用した高度交差点システムの設計”, 信学技報, vol. 122, no. 308, pp. 135-139, Dec. 2022.
  • チョウ ゴンヒ, 于韜, 中里仁, 阪口啓. “連続する路側カメラを用いた車両認識ネットワークに関する研究”, 信学技報, vol. 122, no. 308, pp. 114-119, Dec. 2022.
  • 山本蒼汰, タンザカン, 阪口啓. “ミリ波UAV無線局ネットワークの低消費電力化に関する検討”, 電子情報通信学会2022年ソサイエティ大会, Sept. 2022.
  • Yue Yin, Tao Yu, Kazuki Maruta, Kei Sakaguchi. “Distributed and Scalable Radio Resource Management for mmWave V2V Relays towards Safe Automated Driving”, IEICE Technical Report, vol. 121, no. 139, pp. 229-234, Mar. 2022.

Patent

  • タンザカン, 阪口啓. 無線通信システム、無線通信方法. 特許. 登録. 国立大学法人東京工業大学. 2017/12/28. 特願2017-253912. 2019/07/22. 特開2019-121848. 特許第7068687号. 2022/05/09 2022.


2021 Fiscal Year

Transactions and Letters

  • Ricardo Santos, Nina Skorin-Kapov, Hakim Ghazzai, Andreas Kassler, and Gia Khanh Tran. “Towards the optimal orchestration of steerable mmWave backhaul reconfiguration.” Computer Networks, vol. 202, p.108750, Mar. 2022.
  • Tao Yu, Yoshitaka Takaku, Yohei Kaieda, and Kei Sakaguchi. “Design and PoC Implementation of Mmwave-Based Offloading-Enabled UAV Surveillance System.” IEEE Open Journal of Vehicular Technology, vol. 2, pp. 436-447, Nov. 2021.
  • Yue Yin, Tao Yu, Kazuki Maruta, and Kei Sakaguchi. “Distributed and Scalable Radio Resource Management for mmwave V2V relays towards safe automated driving.” Sensors, vol. 22, issue. 1, p. 7855, Nov. 2021.
  • Amr Amrallah, Ehab Mahmoud Mohamed, Gia Khanh Tran, and Kei Sakaguchi. “Enhanced Dynamic Spectrum Access in UAV Wireless Networks for Post-Disaster Area Surveillance System: A Multi-Player Multi-Armed Bandit Approach.” Sensors, vol. 21, issue. 23, p. 7855, Nov. 2021.
  • Yue Yin, Haoze Chen, Zongdian Li, Tao Yu, and Kei Sakaguchi. “ZigZag Antenna Configuration for MmWave V2V with Relay in Typical Road Scenarios: Design, Analysis and Experiment.” IEICE Transactions on Communications, vol. E104-B, no.10, pp.1307-1317, Oct. 2021.
  • Kei Sakaguchi, Takumi Yoneda, Masashi Iwabuchi, and Tomoki Murakami. “MmWave Massive Analog Relay MIMO.” ITU Journal on Future and Evolving Technologies, vol. 2, issue 6, pp.43-55, Sept. 2021.
  • Ryuichi Fukatsu, and Kei Sakaguchi. “Automated Driving with Cooperative Perception Based on CVFH and Millimeter-Wave V2I Communications for Safe and Efficient Passing through Intersections.” Sensors, vol. 21, issue. 17, p. 5854, Aug. 2021.
  • Ryuichi Fukatsu, and Kei Sakaguchi. “Automated Driving with Cooperative Perception using Millimeter-wave V2V Communications for Safe Overtaking.” Sensors, vol. 21, issue. 8, p. 2659, Apr. 2021.

International Conference

  • Tao Yu, Kiyomichi Araki, and Kei Sakaguchi. “Full-Duplex Aerial Communication System for Multiple UAVs with Directional Antennas.” 2022 IEEE 19th Annual Consumer Communications & Networking Conference (CCNC), pp. 175-180, 8-11 Jan. 2022, Las Vegas, NV, USA.
  • Yue Yin, Tao Yu, and Kei Sakaguchi. “Required-Data-Rate-Based Distributed Resource Allocation Scheme for MmWave V2V with Relay.” 2022 IEEE 19th Annual Consumer Communications & Networking Conference (CCNC), pp. 599-604, 8-11 Jan. 2022, Las Vegas, NV, USA.
  • Weiran Yuan, Kazuki Maruta, Yu Nakayama, Daisuke Hisano, and Kei Sakaguchi. “Image Size Reduction by Road-Side Edge Computing for Wireless Relay Transmission and Object Detection.” 2022 IEEE 19th Annual Consumer Communications & Networking Conference (CCNC), pp. 959-960, 8-11 Jan. 2022, Las Vegas, NV, USA.
  • Tao Yu, Kento Kajiwara, Kiyomichi Araki, and Kei Sakaguchi. “Spectrum Sharing between Directional-Antenna-Equipped UAV System and Terrestrial Systems.” 2022 IEEE 12th Annual Computing and Communication Workshop and Conference (CCWC), pp. 1082-1086. 26-29 Jan. 2022, Las Vegas, NV, USA.
  • Tao Yu, Kiyomichi Araki, and Kei Sakaguchi. “Ground Experiment of Full-Duplex Multi-UAV System Enabled by Directional Antennas.” 2022 IEEE 12th Annual Computing and Communication Workshop and Conference (CCWC), pp. 1092-1097, 26-29 Jan. 2022, Las Vegas, NV, USA.
  • Kazuki Maruta, Miyuu Takizawa, Ryuichi Fukatsu, Yue Wang, Zongdian Li, and Kei Sakaguchi. “Blind-Spot Visualization via AR Glasses using Millimeter-Wave V2X for Safe Driving.” 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), pp. 1-5. 27-30 Sept. 2021, Norman, OK, USA.
  • Yue Wang, Tao Yu, and Kei Sakaguchi. “Context-Based MEC Platform for Augmented-Reality Services in 5G Networks.” 2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall), pp. 1-5, 27-30 Sept. 2021, Norman, OK, USA.
  • Masanori Ozasa, Gia Khanh Tran, and Kei Sakaguchi. “Research on the Placement Method of UAV Base Stations for Dynamic Users.” 2021 IEEE VTS 17th Asia Pacific Wireless Communications Symposium (APWCS), pp. 1-5, 30-31 Aug. 2021, Osaka, Japan.
  • Takuma Okada, and Gia Khanh Tran. “A Study on Antenna Polarization Plane for UL/DL Drone Access Network.” 2021 Twelfth International Conference on Ubiquitous and Future Networks (ICUFN), pp. 334-338. 17-20 Aug. 2021, Jeju Island, Republic of Korea.
  • Ryuichi Fukatsu, and Kei Sakaguchi. “Automated Driving with Cooperative Perception Using Millimeter-wave V2I Communications for Safe and Efficient Passing Through Intersections.” 2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring), pp. 1-5, 25-28 Apr. 2021, Helsinki, Finland.

Domestic Conference

  • Jin Nakazato, Mitsuhiro Kuchitsu, Masahiko Nanri, Soh Masuk, Keishi Tokugawa, Keiichi Kubota, Kazuki Maruta, and Kei Sakaguchi, “Proof-of-Concept of a Micro-Service Distributed Optimization on Edge Computing over Beyond 5G,” Technical Committee on Radio Communication Systems (RCS), IEICE, vol. 121, no. 391, RCS2021-263, pp. 62-67, March 2022.
  • Keishi Tokugawa, Kazuki Maruta, Keiichi Kubota, Kei Sakaguchi, Jin Nakazato, Mitsuhiro Kuchitsu, and Soh Masuko, “Deployment of mmWave Beyond 5G Testbed and high-precision propagation measurement system including relay stations,” Technical Committee on Radio Communication Systems (RCS), IEICE, vol. 121, no. 391, RCS2021-272, pp. 114-119, March 2022.
  • Tomoki Morioka, Masanori Ozasa, Gia Khanh Tran. “Construction of Experimental System for Mm-Wave UAV Base Station.” Technical Committee on Radio Communication Systems (RCS), IEICE, vol. 121, no. 391, RCS2021-288, pp. 177-182, March 2022.
  • Yue Yin, Tao Yu, Kazuki Maruta, and Kei Sakaguchi. “Distributed and Scalable Radio Resource Management for mmWave V2V Relays towards Safe Automated Driving.” IEICE Technical Report, vol. 121, no. 391, RCS2021-297, pp. 229-234, March 2022.
  • Takumi Yoneda, Kei Sakaguchi, Masashi Iwabuchi, and Tomoki Murakami, “AF Relay Station Deployment Method Considering Uniform Coverage and Blocking in MmWave Cellular Systems” IEICE Technical Report, RCS2021-290, pp.189-194 Mar. 2022.
  • Takuma Okada, Gia Khanh Tran. “A study on antenna polarization plane for UL/DL drone access network,” Technical Committee on Radio Communication Systems (RCS), IEICE, vol. 121, no. 391, RCS2021-289, pp. 183-188, March 2022.
  • Kei Sakaguchi, Kazuki Maruta, Keiichi Kubota, Eisuke Fukuda, Jin Nakazato, Mitsuhiro Kuchitsu, and Soh Masuko, “Millimeter-wave + MEC drives B5G – Realization by Fully Virtualized Platform -,” Technical Committee on Network Virtualization (NV), IEICE, Sep. 2021. [Invited Lecture]
  • Kei Sakaguchi, Kazuki Maruta, and Eisuke Fukuda, “V2V/V2X with Millimeter-wave for Cooperative Perception,” Technical Committee on Communication Systems (CS), IEICE, vol. 121, no. 113, CS2021-12, pp. 1-1, July 2021. [Special Invited Talk]
  • Weiran Yuan, Kazuki Maruta, Yu Nakayama, Daisuke Hisano, and Kei Sakaguchi, “Image Size Reduction by Edge Computing for Low Latency Relay Transmission,” Technical Committee on Communication Quality (CQ), IEICE, vol. 121, no. 15, CQ2021-5, pp. 24-28, May 2021.

Patent

  • Kei Sakaguchi, Yuuichirou Sugihara. 通信システムおよび制御装置. Patent. Published. 国立大学法人東京工業大学. 2020/02/04. 特願2020-017442. 2021/08/30. 特開2021-125779. 2021.
  • Kei Sakaguchi, Yoshitaka Takaku, Shunya Imada. 移動体システム、基地局装置、移動体. Patent. Published. 国立大学法人東京工業大学. 2020/02/25. 特願2020-029641. 2021/09/13. 特開2021-136507. 2021.
  • Kei Sakaguchi, Yue Yin. 通信装置. Patent. Published. 国立大学法人東京工業大学. 2020/02/04. 特願2020-017443. 2021/08/30. 特開2021-125780. 2021.


2020 Fiscal Year

Transactions and Letters

  • Kei Sakaguchi, Ryuichi Fukatsu, Tao Yu, Eisuke Fukuda, Kim Mahler, Robert Heath, Takeo Fujii et al. “Towards mmWave V2X in 5G and Beyond to Support Automated Driving.” IEICE Transactions on Communications, vol.E 104-B, no.6, pp.-, Jun. 2021.
  • Makoto Nakamura, Hiroaki Nishiuchi, Jin Nakazato, Konstantin Koslowski, Julian Daube, Ricardo Santos, Gia Khanh Tran, and Kei Sakaguchi. “Experimental Verification of SDN/NFV in Integrated mmWave Access and Mesh Backhaul Networks.” IEICE Transactions on Communications 104, no. 3 (2021): 217-228.
  • Zongdian Li, Tao Yu, Ryuichi Fukatsu, Gia Khanh Tran and Kei Sakaguchi, “Towards Safe Automated Driving: Design of Software-Defined Dynamic MmWave V2X Networks and PoC Implementation,” in IEEE Open Journal of Vehicular Technology, vol. 2, pp. 78-93, 2021.

International Conference

  • Jin Nakazato, Makoto Nakamura, Tao Yu, Zong dian Li, Gia Khanh Tran, Kei Sakaguchi, “Design of MEC 5G Cellular Networks: Viewpoints from Telecom Operators and Backhaul Owners,” 2020 IEEE International Conference on Communications Workshops (ICC Workshops), Dublin, Ireland, 2020, pp. 1-6, doi: 10.1109/ICCWorkshops49005.2020.9145269.
  • Masanori Ozasa, Jin Nakazato, Kousuke Hirata Hirata, Gia Khanh Tran, Kei Sakaguchi, “Design of Millimeter-wave UAV Base Station for Access Link,” 2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall), Victoria, BC, Canada, 2020, pp. 1-5, doi: 10.1109/VTC2020-Fall49728.2020.9348602.
  • Yue Yin, Haoze Chen, Zongdian Li, Ryuichi Fukatsu, Tao Yu and Kei Sakaguchi, “Design of Antenna Configuration for Interference Control in MmWave V2V Communication Systems,” 2020 IEEE 92nd Vehicular Technology Conference (VTC2020-Fall), Victoria, BC, Canada, 2020, pp. 1-5, doi: 10.1109/VTC2020-Fall49728.2020.9348872.
  • Amr Amrallah, Ehab Mahmoud Mohamed, Gia Khanh Tran, Kei Sakaguchi, “Radio Resource Management Aided Multi-Armed Bandits for Disaster Surveillance System”, 2020 International Conference on Emerging Technologies for Communications (ICETC), 2nd, Dec. 2020.
  • Tao Yu, Shunya Imada, Kiyomichi Araki, Kei Sakaguchi, “Multi-UAV Full-Duplex Communication Systems for Joint Video Transmission and Flight Control”, IEEE CCWC 2021.

Domestic Conference

  • Masanori Ozasa, Jin Nakazato, Kousuke Hirata, Kei Sakaguchi, Gia Khanh Tran, “Design of Millimeter-wave UAV Base Station for Access Link”, IEICE Technical Report, RCS, 24th, Jun. 2020.
  • Tao Yu, Shunya Imada, Kiyomichi Araki, Kei Sakaguchi, “UAV-based Wireless Surveillance System enabled by High Resolution Video Transmission”, IEICE Tech. Rep., vol.120, no. 130, RCS2020-78, Aug. 2020.
  • Shoma Tanaka, Gia Khanh Tran, Kei Sakaguchi, “Study on Sensor Positions for Outdoor Localization of RF Emitter Using UAV-based Sensors”, IEICE Society Conference, 15th, Sep. 2020.
  • Kousuke Hirata, Gia Khanh Tran, Kei Sakaguchi, “Design of Dynamic mmWave Mesh Backhaul with UAVs”, IEICE Technical Committee on Smart Radio, 19th, Nov. 2020.
  • Tatsuya Shikiji, Tomohiro Mogi, Tsutomu Mitsui, Takeshi Yajima, Nobuyuki Kuroyanagi, Daisuke Aida, Daiki Kurokawa, Kei Sakaguchi, Kiyomichi Araki, Khanh Tran Gia, Tao Yu, Yasushi Hada, “Prototyping of real time wireless system for transmission Ultra-High definition video over 5.7Ghz”, Technical Committee on Communication Quality, 20th, Jan. 2021.
  • Masanori Ozasa, Gia Khanh Tran, Kei Sakaguchi, “Research on UAV base station placement method for temporal user distribution”, IEICE General Conference, B-5-133, 9th, Mar. 2021.
  • Takumi Yoneda, Kei Sakaguchi, Masashi Iwabuchi, Tomoki Murakami, “A study on mmWave Multi-hop Analog Relay Single-User MIMO” IEICE Technical Report, vol. 120, no. 406, SRW2020-83, pp110-115, Mar. 2021.
  • Yue Wang, Tao Yu, Kei Sakaguchi, “Context-Based MEC Platform for Augmented-Reality Services in 5G Networks”, IEICE Technical Report, vol. 120, no. 404, RCS2020-211, pp.49-54, Mar. 2021.
  • Yue Wang, Tao Yu, Kei Sakaguchi, “AR Glass as 5G Terninal and its Application in Smart Buildings”, IEICE General Conference, 9th, Mar. 2021.
  • Jin Nakazato, Zongdian Li, Kazuki Maruta, Kei Sakaguchi, “Viewpoint from Local Telecom Operators and Cloud Owners”， IEICE Technical Report, RCS, Mar. 2021.
  • Weiran Yuan, Kazuki Maruta, Yu Nakayama, Kei Sakaguchi, “Image Size Reduction by Edge Computing for Low Latency Relay Transmission”, IEICE General Conference, B-5-89, 9th, 12th, Mar. 2021.
  • Kajiwara Kento, Shunya Imada, Tao Yu, Kei Sakaguchi, “Study on Spectrum Sharing between the UAV Equipped with Directional Antenna and the Wireless LAN System on the Ground”, IEICE General Conference, 9th, 12th, Mar. 2021.
  • Shunya Imada, Tao Yu, Kiyomichi Araki, Kei Sakaguchi, “Multi-Drone Full-Duplex Communication Systems for Joint Video Transmission and Flight Control”, IEICE Technical Report, RCS, Mar. 2021.

Oral Presentation

  • Kei Sakaguchi, Kazuki Maruta, Eisuke Fukuda, “Super Smart Society Created by Beyond 5G”, Technical Report, Mar. 2021

Patent

  • Gia Khanh Tran, Jun-ichi Takada, Kei Sakaguchi, Azril Haniz. 発信源推定方法およびそれを利用した発信源推定装置. Patent. Registered. 国立大学法人東京工業大学, 株式会社光電製作所. 2016/07/29. 特願2016-150371. 2018/02/01. 特開2018-017695. 特許第6747688号. 2020/08/11 2020.


2019 Fiscal Year

International Conference

  • Jin Nakazato, Tao Yu, Gia Khanh Tran, Kei Sakaguchi, “Revenue Model with Multi-Access Edge Computing for Cellular Network Architecture,” ICUFN2019, IEEE, Jul. 2019.
  • Hayato Sakamoto, Ryosuke Suga, Kiyomichi Araki, and Osamu Hashimoto, “Input Impedance Design of a Circular Patch Array Absorber Considering Perturbation Elements Position” Progress in Electromagnetics Research Symposium 2019 in Rome, 3P0-2, p.2373, June 2019.
  • Makoto Nakamura, Hiroaki Nishiuchi, Gia Khanh Tran, Kei Sakaguchi, Konstantin Koslowski, Julian Daube, Ricardo Santos, “Performance Evaluation of Prefetching Algorithm for Real time Edge Content Delivery in 5G System,” VTC-Fall2019, IEEE, Sep. 2019.
  • Kei Sakaguchi and Yuichiro Sugihara, “Massive analog relay with active beamforming for better deployment of 5G mmWave massive MIMO,” IEICE SmartCom 2019, Nov. 2019. (Invited Talk)
  • Shoma Tanaka, Gia Khanh Tran, Kei Sakaguchi, “Outdoor Localization of RF Emitter Using UAV-based Sensors,” SmartCom2019, Technical Report, IEICE, Nov. 2019.
  • Jin Nakazato, Makoto Nakamura, Tao Yu, Gia Khanh Tran, Kei Sakaguchi, “Benefits of MEC in 5G Cellular Networks from Telecom Operator’s View Points,” Globecom2019, IEEE, Dec. 2019.
  • Zongdian Li, Ryuichi Fukatsu, Tao Yu, Gia Khanh Tran, Kei Sakaguchi, “Proof-of-Concept of a SDN Based mmWave V2X Network for Safe Automated Driving,” Globecom2019, IEEE, Dec. 2019..

Domestic Conference

  • Kodai Koizumi, Ryosuke Suga, Kiyomichi Araki, and Osamu Hashimoto: “Bandwidth design based on equivalent circuit analysis for broadband two-layered circular patch array absorber,” IEICE Technical Report, EST2019-12, pp.23-27, July 2019.
  • Kei Sakaguchi, “Millimeter-wave V2X for supporting safe automated driving,” ITE General Conf. 2019, Aug. 2019. (Invited Talk)
  • Ryosuke Suga, Kiyomichi Araki, and Osamu Hashimoto, “Inter-Patch Coupling Dependence of Input Impedance of Circular Patch Array Radio Wave Absorber,” Proc. of 2019 IEICE Society Conference, BI-4-2, pp. SS-91-SS-92, Sep. 2019.
  • Makoto Nakamura, Hiroaki Nishiuchi, Konstantin Koslowski, Julian Daube, Ricardo Santos, Gia Khanh Tran, Kei Sakaguchi, “Performance Evaluation of backhaul resource allocation based on SDN for mmWave Edge Cloud,” IEICE Society Conference, Sep. 2019.
  • Shoma Tanaka, Gia Khanh Tran, Kei Sakaguchi, “Outdoor Localization of RF Emitter Using UAV-based Sensors,” IEICE Society Conference, Sep. 2019.
  • Makoto Nakamura, Hiroaki Nishiuchi, Konstantin Koslowski, Julian Daube, Ricardo Santos, Gia Khanh Tran, Kei Sakaguchi, “Performance Evaluation of backhaul resource allocation based on SDN for mmWave Edge Cloud,” IEICE Society Conference, Sep. 2019.
  • Jin Nakazato, Makoto Nakamura, Tao Yu, Zongdian Li, Gia Khanh Tran, Kei Sakaguchi, “Design of MEC Cellular Networks:Viewpoints from Telecom Operator and Backhaul Owner,” IEICE RCS Technical Report, Dec. 2019.
  • Kei Sakaguchi, “Millimeter-wave V2X for supporting safe automated driving,” ITE General Conf. 2019, Aug. 2019. (Invited Talk)
  • Kei Sakaguchi, “mmWave 5G from the past to the future,” IEICE Tech. Rep., RCS2019-363, SR2019-128, SRW2019-68, Mar. 2020. (Invited Talk)
  • Kousuke Hirata, Masanori Ozasa, Kei Sakaguchi, Gia Khanh Tran, “Design of Dynamic mmWave Mesh Backhaul with Drones,” IEICE General Conference, Mar. 2020.
  • Masanori Ozasa, Kousuke Hirata, Kei Sakaguchi, Gia Khanh Tran, “Location of UAV Base Station Using Millimeter Waves in Disaster,” IEICE General Conference, Mar. 2020.
  • Yue Wang, Tao Yu, Kei Sakaguchi, “AR Glass 5G Terminal and its Application in Smart Buildings,” IEICE General Conference, Mar. 2020.
  • Weiran Yuan, Makoto Nakamura, Kei Sakaguchi, “Compact Design of Base Station in mmWave Mesh Backhaul Network,” IEICE General Conference, Mar. 2020.
  • Yue Yin, Tao Yu, Kei Sakaguchi, “ZigZag Antenna Configuration for Interference Control in Millimeter-wave V2V Communication Systems,” IEICE Mobile Communication Research Workshop, Mar. 2020.
  • Amr Amrallah, Ehab Mahmoud Mohamed, Gia Khanh Tran, Kei Sakaguchi, “Multi-User Multi-Armed Bandits Learning for Dynamic Spectrum Access System,” IEICE Mobile Communication Research Workshop, Mar. 2020.
  • Shunya Imada, Yoshitaka Takaku, Kiyomichi Araki, Tao Yu, Gia Khanh Tran, Kei Sakaguchi, Tomohiro Mogi, Takeshi Yajima, “Study on Full Duplex 4k Video Transmission Systems by Multi-Drones in 5.7GHz band,” IEICE Mobile Communication Research Workshop, Mar. 2020..

Other Publications

  • PRESS RELEASE: SECOM, Tokyo Tech, Drone transmits uncompressed 4K video in real time using millimeter wave, Tokyo Tech, Jun. 2019.
  • PRESS RELEASE: Kei Sakaguchi, “Japan Society 5.0 Plan: Reviving an aging and shrinking population,” CGTN, Jul. 2019.
  • Valerio Frascolla, Robert Zaus, Antonio De Domenico, Nicola di Pietro, Konstantin Koslowski, Thomas Haustein, Sergio Barberis, Valerio Palestini, Sergio Barbarossa, Mattia Merluzzi, Gia Khanh Tran, Kei Sakaguchi, Koji Takinami, Katsuo Yunoki, “D1.4 ~ Final report on joint EU/JP vision, business models and eco-system impact ~,” 5G-MiEdge Deliverables, 5G-MiEdge, Jul. 2019.
  • Thomas Haustein, Konstantin Koslowski, Julian Daube, Kei Sakaguchi, Gia Khanh Tran, Hiroaki Nishiuchi, Makoto Nakamura, Yu Tao, “D4.3 ~ MiEdge field trials integrated in 5G-Berlin Testbed toward Tokyo Olympic 2020 ~,” 5G-MiEdge Deliverables, 5G-MiEdge, Jul. 2019.
  • Antonio De Domenico, Nicola di Pietro, Konstantin Koslowski, Valerio Palestini, Sergio Barberis, Sergio Barbarossa, Mattia Merluzzi, Kei Sakaguchi, Gia Khanh Tran, Koji Takinami, Katsuo Yunoki, “D5.3 ~ Final report on dissemination, standards, regulation and exploitation ~,” 5G-MiEdge Deliverables, 5G-MiEdge, Jul. 2019.
  • PRESS RELEASE: Kei Sakaguchi, “The start of 5G service – What kind of future we are waiting for?” FUJI TV, Nov. 2019.
  • PRESS RELEASE: Kei Sakaguchi, “The Future Opened up by 5G-to Realize the Super Smart Society,” Nikkei Newspaper, Dec.2019..

Patent

  • Gia Khanh Tran, Kei Sakaguchi. 無線通信システム、無線通信方法. Patent. Published. 国立大学法人東京工業大学. 2017/12/28. 特願2017-253912. 2019/07/22. 特開2019-121848. 2019.


2018 Fiscal Year

Book

  • Kiyomichi Araki, “Fundamentals of Circuit and System Theory,” Mar. 2019.
Journal

International Conference

  • Hiroaki NISHIUCHI, Gia Khanh TRAN, Kei SAKAGUCHI. [Invited] Performance Evaluation of 5G mmWave Edge Cloud with Prefetching Algorithm, VTC2018-Spring, IEEE, Jun. 2018.
  • Gia Khanh Tran, Hiroaki Nishiuchi, Valerio Frascolla, Koji Takinami, Antonio De Domenico, Emilio Calvanese Strinati, Thomas Haustein, Kei Sakaguchi, Sergio Barbarossa, Sergio Barberis, Katsuo Yunoki. [Invited] Architecture of mmWave edge cloud in 5G-MiEdge, ICC2018, IEEE, May. 2018.
  • Makoto Nakamura, Ricardo Santos, Konstantin Koslowski, Hiroaki Nishiuchi, Gia Khanh Tran, Kei Sakaguchi. Performance Evaluation for Millimeter-wave Backhaul and Edge Cloud Networks, SmartCom2018, Oct. 2018.
  • Koslowski K., Santos R., Keusgen W., Haustein T., Kassler A., Sakaguchi K., Ogawa H., Nakamura M., Tao Y. , SDN Orchestration to Optimize Meshed Millimeter-Wave Backhaul Networks for MEC-Enhanced eMBB Use Cases,  IEEE BMSB2018, IEEE Computer Society , 2018.
  • Makoto NAKAMURA, Gia Khanh TRAN, Kei SAKAGUCHI. Interference Management for Millimeter-wave Mesh Backhaul Networks, CCNC2019, Jan. 2019.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Toshihiro YAMAGUCHI, Tsutomu Mitsui, Shintaro ARATA. Construction and Interpolation of a Multi-frequency Radio Map, ICREST2018, Jan. 2019.

Domestic Conference

  • Gia Khanh Tran, Ricardo Santos, Konstantin Koslowski, Hiroaki Nishiuchi, Makoto Nakamura, Kei Sakaguchi. Performance Evaluation for Millimeter-wave Backhaul and Edge Cloud Networks, Multiple Innovative Kenkyu-kai Association for Wireless Communications 2018, Sep. 2018.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Toshihiro YAMAGUCHI, Shintaro ARATA. [Panel Discussion] Multi-frequency Radio Map Database Construction and its Application in Positioning, IEICE Society Conference, IEICE, Sep. 2018.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Toshihiro YAMAGUCHI, Tsutomu Mitsui, Shintaro ARATA. [Invited] Localization of Unknown Radios in Urban Enviroments — On-campus Experiment Results –, 電子情報通信学会SRW研究会, 信学技報, Aug. 2018.
  • Makoto NAKAMURA, Gia Khanh TRAN, Kei SAKAGUCHI. Interference Management for Millimeter-Wave Mesh Backhaul Networks, Special Issue on Wireless Distributed Networks 2018, Jul. 2018.
  • Makoto NAKAMURA, Gia Khanh TRAN, Kei SAKAGUCHI. Study on Interference Management for Millimeter-Wave Mesh Backhaul Networks, IEICE General Conference 2018, Mar. 2018.
  • Hiroaki NISHIUCHI, Gia Khanh TRAN, Kei SAKAGUCHI. Prefetching Algorithm for 5G mmWave HetNet under Backhaul Constraint, IEICE General Conference 2018, Mar. 2018.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Toshihiro YAMAGUCHI, Tsutomu Mitsui, Shintaro ARATA. [Invited] Machine Learning Based Regression of Fingerprint Database for Unknown Emitter Localization, 電子情報通信学会移動通信ワークショップ, 信学技報, Feb. 2018.

Other Publication

  • Thomas Haustein, Konstantin Koslowski, Kei Sakaguchi, Gia Khanh Tran, Takashi Tomura, Hiroaki Nishiuchi, Makoto Nakamura, Koji Takinami, Tomoya Urushihara, Daniele Disco, Roberto Vallauri, Andrea Vicentini. D4.2 ~ 5G-MiEdge test-bed integrating mmWave access, liquid RAN C-plane, and user/application centric orchestration ~, 5G-MiEdge Deliverables, 5G-MiEdge, Dec. 2018.
  • Thomas Haustein, Konstantin Koslowski, Sergio Barbarossa, Stefania Sardellitti, Francesca Cuomo, Mattia Merluzzi, Kei Sakaguchi, Gia Khanh Tran, Yuyuan Chang, Koji Takinami, Tomoya Urushihara, Naganori Shirakata. D2.2 ~ Design of mmWave ultra broadband access for 5G ~, 5G-MiEdge Deliverables, 5G-MiEdge, Dec. 2018.
  • Thomas Haustein, Konstantin Koslowski, Antonio De Domenico, Nicola di Pietro, Sergio Barbarossa, Stefania Sardellitti, Francesca Cuomo, Mattia Merluzzi, Kei Sakaguchi, Gia Khanh Tran, Makoto Nakamura, Koji Takinami, Tomoya Urushihara. D2.4 ~ Method of site specific deployment of mmWave edge cloud ~, 5G-MiEdge Deliverables, 5G-MiEdge, Aug. 2018.
  • Gia Khanh Tran, Hiroaki Nishiuchi, Kei Sakaguchi, Mattia Merluzzi, Sergio Barbarossa, Konstantin Koslowski, Koji Takinami, Valerio Frascolla. D4.1 ~ Performance evaluation of 5G MiEdge based 5G cellular networks ~, 5G-MiEdge Deliverables, 5G-MiEdge, Jun. 2018.
  • Valerio Frascolla, Antonio De Domenico, Kei Sakaguchi, Valerio Palestini, Sergio Barberis, Sergio Barbarossa, Gia Khanh Tran, Koji Takinami, Katsuo Yunoki. D5.2 ~ Second report on dissemination, standards, regulation and exploitation plan ~, 5G-MiEdge Deliverables, 5G-MiEdge, Jun. 2018.
  • Emilio Calvanese Strinati, Nicola di Pietro, Valerio Frascolla, Sergio Barbarossa, Sergio Barberis, Kei Sakaguchi, Gia Khanh Tran, Yunoki Katsuo, Koji Takinami. D1.3 ~ System Architecture and Requirements ~, 5G-MiEdge Deliverables, 5G-MiEdge, Mar. 2018.

Patent

  • Gia Khanh Tran, Jun-ichi Takada, Kei Sakaguchi, Azril Haniz. 発信源推定方法およびそれを利用した発信源推定装置. Patent. Published. 国立大学法人東京工業大学, 株式会社光電製作所. 2016/07/29. 特願2016-150371. 2018/02/01. 特開2018-017695. 2018.
  • Jun-ichi Takada, Azril Haniz, Gia Khanh Tran, Ryosuke Iwata, Kei Sakaguchi. 発信源推定方法およびそれを利用した発信源推定装置. Patent. Registered. 国立大学法人東京工業大学, 株式会社光電製作所. 2014/10/20. 特願2014-213902. 2016/05/16. 特開2016-080589. 特許第6399512号. 2018/09/14 2018.
  • Gia Khanh Tran, Kiyomichi Araki. アンテナ性能評価装置及び到来波角度プロファイル推定装置. Patent. Registered. 国立大学法人東京工業大学, マツダ株式会社. 2014/07/16. 特願2014-145999. 2016/02/08. 特開2016-023951. 特許第6358616号. 2018/06/29 2018.
  • Gia Khanh Tran, Hidekazu Shimodaira. 通信制御装置、制御方法、及びプログラム. Patent. Registered. 国立大学法人東京工業大学, 株式会社KDDI総合研究所, 国立大学法人大阪大学. 2014/05/23. 特願2014-107462. 2015/12/10. 特開2015-222929. 特許第6343766号. 2018/06/01 2018.
  • Gia Khanh Tran, Jun-ichi Takada, Kei Sakaguchi, Kentaro Sano. 推定方法およびそれを利用した推定装置. Patent. Registered. 国立大学法人東京工業大学, 株式会社光電製作所. 2013/08/20. 特願2013-170719. 2015/03/02. 特開2015-040721. 特許第6292566号. 2018/02/23 2018.


2017 Fiscal Year

Journal

International Conference

  • Hiroaki Ogawa, Gia Khanh Tran, Kei Sakaguchi, Thomas Haustein, “Traffic Adaptive Formation of mmWave Meshed Backhaul Networks,” ICC2017, WS-03, IEEE, IEEE, May. 2017.
  • Gia Khanh Tran, Emmanuel Dotaro, Pascal Thubert, Thomas Haustein, Kei Sakaguchi, “[Panel discussion] Evolutional Technologies & Ecosystems for 5G and Beyond,” ICC2017 WDN-5G workshop, May. 2017.
  • Xi Li, Raihana Ferdous, Carla Fabiana Chiasserini, Claudio Ettore Casetti, Francesca Moscatelli, Giada Landi, Ramon Casellas, Kei Sakaguchi, Shahzoob Bilal Chundrigar, Ricard Vilalta, Josep Mangues, Andres Garcia-Saavedra, Xavier Costa-Pérez, Leonardo Goratti, Domenico Siracusa, “Novel resource and energy management for 5G integrated backhaul/fronthaul (5G-Crosshaul),” in Proc. IEEE ICC Workshops, June 2017.
  • Jafar Mohammadi, Jian Luo, Valerio Frascolla, Katsuo Yunoki, Koji Takinami, Kei Sakaguchi, Gia Khanh Tran, Sergio Barbarossa, “[Invited] Hardware-In-the-Loop Trials and Demonstrations for 5G mm-Wave Communications ~ a Waveform Study,” EuCNC2017, IEEE, Jun. 2017.
  • Osamah Ibrahiem Abdullaziz, Marco Capitani, Claudio Ettore Casetti, Carla Fabiana Chiasserini, Shahzoob Bilal Chundrigar, Giada Landi, Xi Li, Francesca Moscatelli, Kei Sakaguchi, Samer T. Talat, “Energy monitoring and management in 5G integrated fronthaul and backhaul,” in Proc. EuCNC, June 2017.
  • Gia Khanh Tran, Kei Sakaguchi, Makoto Ando, “[Keynote] Paving the Way to the Realization of 5G Cellular Networks based on mmWave Small Cell Networking,” WoWMoM2017, SCN workshop, Jun. 2017.
  • Kei Sakaguchi, Gia Khanh Tran, Hiroaki Ogawa, “mmWave meshed network with traffic and energy management mechanism,” in Proc. IEEE SPAWC2017, July 2017.
  • Gia Khanh Tran, Kei Sakaguchi, Makoto Ando, “Integration of mmWave Access and Backhaul Networks for 5G & Beyond,” Japan-China Workshop on the Next Generation Mobile Communication Technology and Application, Jul. 2017.
  • X. Xu, D. Mori, A. Mazzinghi, A. Freni, J. Hirokawa, M. Ando and K. Araki, “A 60-GHz RLSA fed by Butler matrix carrying three OAM modes,” in IEEE International Symposium on Antennas and Propagation (APSURSI), San Diego, California, USA, pp. 1445‒1446, July 2017.
  • Valerio Frascolla, Katsuo Yunoki, Sergio Barbarossa, Valerio Frascolla, Federico Miatton, Gia Khanh Tran, Koji Takinami, Antonio De Domenico, Emilio Calvanese Strinati, Thomas Haustein, Kei Sakaguchi, Sergio Barbarossa, Sergio Barberis, “[Invited] 5G-MiEdge: Design, Standardization and Deployment of 5G Phase II Technologies,” CSCN2017, IEEE, Sep. 2017.
  • Gia Khanh Tran, Kei Sakaguchi, Makoto Ando, “[Invited] mmWave Heterogeneous Networks in 5G & Beyond,” ATC2017, ATC2017, Oct. 2017.
  • Valerio Frascolla, Kei Sakaguchi, Sergio Barbarossa, Antonio De Domenico, Sergio Barberis, Gia Khanh Tran, Koji Takinami, Thomas Haustein, “[Invited] Use cases and scenario resulting from merging mmWave access with Multi-access Edge Technologies,” SmartCom 2017, IEICE technical report, Oct. 2017.
  • Koji Takinami, Antonio De Domenico, Konstantin Koslowski, Gia Khanh Tran, Yuyuan Chang, Hiroaki Ogawa, Mattia Merluzzi, Sergio Barbarossa, “[Invited] 5G-MiEdge: Introduction of Millimeter-Wave Edge Cloud, a Key Technology for 5G Phase II Deployment,” SmartCom 2017, IEICE technical report, Oct. 2017.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Toshihiro YAMAGUCHI, Tsutomu MITSUI, Shintaro ARATA, “[Poster Presentation] Simulation-based Analysis of RSS Location Fingerprint under Multipath Fading Effects,” SmartCom 2017, Technical Report, IEICE, Oct. 2017.
  • Hiroyuki KAMATA, Gia Khanh TRAN, Kei SAKAGUCHI, Kiyomichi ARAKI, “[Poster Presentation] Robust and Low Complexity Signal Detection Method based on Power Spectrum under Noise Uncertainty,” SmartCom 2017, Technical Report, IEICE, Oct. 2017.
  • Hiroaki NISHIUCHI, Gia Khanh TRAN, Kei SAKAGUCHI, “[Poster Presentation] Performance Evaluation of Prefetching Algorithm for 5G mmWave Edge Cloud,” SmartCom 2017, Technical Report, IEICE, Oct. 2017.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Daisuke HAYASHI, Toshihiro YAMAGUCHI, Shintaro ARATA, “[Invited] Hybrid Fingerprint-based Localization of Unknown Radios: Measurements in an Open Field,” APMC 2017, pp.865-868, Nov. 2017.
  • Takahiro Omatsuzawa, Ryosuke Suga, Kiyomichi Araki, and Osamu Hashimoto, “A Study on Active Absorption Transmission Reflection FSS using Diodes,” The 39th Progress In Electromagnetics Research Symposium (PIERS) in Singapore, p.879, Nov. 2017.
  • Daisuke Kitahara, Rryosuke Suga, Kiyomichi Araki, and Osamu Hashimoto, “A Study on Bandwidth Improvement of Circular Patch Array Absorber by Using Perturbation Elements,” The 39th Progress In Electromagnetics Research Symposium (PIERS) in Singapore, p.1107, Nov. 2017.
  • Ricardo Santos, Hiroaki, Ogawa, Gia Khanh Tran, Kei Sakaguchi, Anreas Kassler, “Turning the knobs on OpenFlow-based resiliency in mmWave small cell meshed networks,” in Proc. IEEE Globecom Workshops, Dec. 2017.

Domestic Conference

  • Konstantin Koslowski, Jens Pils, Richard Weiler, Wilhelm Keusgen, Thomas Haustein, Gia Khanh Tran, Hiroaki Ogawa, Hiroaki Nishiuchi, Takashi Tomura, Kei Sakaguchi, “5G-MiEdge -Millimeter-wave Edge Cloud as an enabler for 5G ecosystem-,” IEICE Technical Report, SR2017-9, May 2017.
  • Yu TAO, Gia Khanh TRAN, Kei SAKAGUCHI, “[Invited] A Lighting Control System Using Battery-less Wireless Human Detection Sensor Networks,” IEICE Society Conference, IEICE, Sep. 2017.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Toshihiro YAMAGUCHI, Shintaro ARATA, “A Study on Spatial Averaging of RSS Fingerprints for Localization of Unknown Radios,” IEICE Society Conference, IEICE, Sep. 2017.
  • Tomohiko Nakamura, Ryosuke Suga, Daisuke Kitahara, Kiyomichi Araki, Osamu Hashimoto, “Winding Ratio Estimation of Transformer in Equivalent Circuit of Patch Array Wave Absorber,” IEICE Society Conference, C-2-43, p.51, Sep. 2017.
  • Ryosuke Suga, Takahiro Omatsuzawa, Kiyomichi Araki, Osamu Hashimoto, “A Study on Design of Absorption/Transmission/Refection Surface using Two FSSs,” IEICE Society Conference, C-15-4, p.163, Sep. 2017.
  • Kei Sakaguchi, “Millimeter-wave Applications in 5G and Beyond,” IEICE Society Conference, BP-4-1, Sep. 2017.
  • Daisuke Kitahara, Ryosuke Suga, Kiyomichi Araki, Osamu Hashimoto, “A Study on Bandwidth Improvement of Circular Patch Array Absorber by Using Perturbation Elements and Suppression of Polarization Conversion,” IEICE Technical Report, MW2017-64, pp.189-193, Sep. 2017.
  • Daisuke Kitahara, Tomohiko Nakamura, Ryosuke Suga, Kiyomichi Araki, Osamu Hashimoto, “Relation between Structure Parameter of Circular Patch Array Wave Absorber and Its Winding Ratio of Transformer in Equivalent Circuit,” IEICE Technical report, MW2017-65, pp.195-199, Sep. 2017.
  • Kei Sakaguchi, “Applications of mmWave Heterogeneous Network in 5G,” IEICE Technical report, RCS2017-185, Oct. 2017.
  • Takahiro Omatsuzawa, Ryosuke Suga, Kiyomichi Araki, Osamu Hashimoto, “Study on Switching Method of Radio Wave Absorption/Transmission/Reflection Surface and Its Design,” IEICE Technical report, EMCJ2017-83, pp.41-45, Dec. 2017.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA,Toshihiro YAMAGUCHI, Tsutomu Mitsui, Shintaro ARATA, “[Invited] Machine Learning Based Regression of Fingerprint Database for Unknown Emitter Localization,” IEICE Mobile Communication Workshop, IEICE Technical report, Feb. 2018.
  • Hiroaki Nishiuchi, Gia Khanh Tran, Kei Sakaguchi, “Proposal of Prefetching Algorithm for 5G mmWave HetNet under Backhaul Constraint,” 2018 IEICE General Conference, Mar. 2018.
  • Makoto NAKAMURA, Gia Khanh TRAN, Kei SAKAGUCHI, “Study on Interference Management for Millimeter-Wave Mesh Backhaul Networks,” IEICE General Conference 2018, Mar. 2018.
  • Tuchjuta RUCKKWAEN, Kiyomichi ARAKI, Takashi TOMURA, Jiro HIROKAWA, Makoto ANDO, “Experimental Evaluation of Intersymbol Interference in Non-Far Region Transmission using 60GHz-Band Large Array Antennas,” IEICE General Conference, Mar. 2018.
  • Tomohiko Nakamura, Daisuke Kitahara, Ryosuke Suga, Kiyomichi Araki, Osamu Hashimoto, “A Study on Coupling between Adjacent Patches of Circular Patch Array Absorber,” IEICE General Conference, Mar. 2018. (to be presented)
  • Daisuke Kitahara, Mika Hirayama, Ryosuke Suga, Kiyomichi Araki, Osamu Hashimoto, “A study on winding ratio design of half-wavelength resonator array absorber,” IEICE General Conference, Mar. 2018. (to be presented)
  • K.Araki,”A Role of Digital RF Technologies in SDR,” IEICE General Conference, Mar. 2018.
  • Kei Sakaguchi, “(Inivited) mmWave V2V2X for Automated Driving,” IEICE Technical report, 2018-02-RCS-SR-SRW, Mar. 2018.
  • Reina TANIGUCHI, Teruya FUJII, Hideki OMOTE, Kei SAKAGUCHI, “A control optimization on Transmit Interference Canceller in HetNet Construction”, 2018 IEICE General Conf.,Mar. 2018.
  • Teruya Fujii, Reina TANIDUGHI, Hideki OMOTE, “A Study on Transmit Interference Canceller in HetNet Construction”, 2018 IEICE General Conf.,Mar. 2018.
  • Ken IKEDA, Hideki OMOTE, Teruya FUJII, Kei SAKAGUCHI, “Measurements of Path loss Characteristics using Scale Model for 3D Layard Cell Construction”, 2018 IEICE General Conf.,Mar. 2018.

Other Publication and Oral Presentation

  • Kei Sakaguchi, “MiEdge: Fusion of mmWave access and mobile edge computing for 5G,” IEEE IMS2017, June 2017.
  • Kei Sakaguchi, “The Challenge and proposition of mmWave in 5G,” 5G Taipei Summit, Sep. 2017.
  • Kei Sakaguchi, Thomas Haustein, Richard Weiler, Antonio De Domenico, Valerio Frascolla, Sergio Barberis, Valerio Palestini, Flavio Muratore, Sergio Barbarossa, Andrea Baiocchi, Antonio Cianfrani, Gia Khanh Tran, Koji Takinami. “D1.1 ~ Use Cases and Scenario Definition ~“, 5G-MiEdge Deliverables, 5G-MiEdge, Apr. 2017.
  • Emilio Calvanese Strinati, Nicola di Pietro, Sergio Barbarossa, Elena Ceci, Francesca Costanzo, Mattia Merluzzi, Antonio Cianfrani, Valerio Frascolla, Jürgen Englisch, Robert Zaus, Kei Sakaguchi, Gia Khanh Tran, Yunoki Katsuo. D3.1 ~ Architecture of mmWave edge cloud and requirement for control signaling ~, 5G-MiEdge Deliverables, 5G-MiEdge, Dec. 2017.
  • Valerio Frascolla, Federico Miatton, Antonio De Domenico, Kei Sakaguchi, Valerio Palestini, Sergio Barbarossa, Gia Khanh Tran, Koji Takinami, Katsuo Yunoki. D5.1 ~ First report on dissemination, standards, regulation and exploitation plan ~, 5G-MiEdge Deliverables, 5G-MiEdge, Jun. 2017.
  • Valerio Frascolla, Federico Miatton, Antonio De Domenico, Kei Sakaguchi, Konstantin Koslowski, Valerio Palestini, Sergio Barberis, Sergio Barbarossa, Gia Khanh Tran, Koji Takinami, Katsuo Yunoki. D1.2 ~ Mid-term report on joint EU/JP vision, business models and eco-system impact ~, 5G-MiEdge Deliverables, 5G-MiEdge, Jun. 2017.


2016 Fiscal Year

Journal

International Conference

  • M. Ando, J. Hirokawa, M. Zhang, M. Wakasa, and K. Araki, “A Study of the 60 GHz-Band Compact Range Wireless Access System Using Large Array Antennas,” Euro. Conf. Antennas Propagat., A33-4, Apr. 2016.
  • A.M. Sayeed, J. Putkonen, L. Dussopt, M. Hunukumbure, G.K. Tran, “[Panel discussion] Millimeter Wave-Based Integrated Mobile Communications for 5G Networks,” CNC2016 mmW5G workshop, Apr. 2016.
  • G.K. Tran, H. Shimodaira, R. Rezagah, K. Sakaguchi, K. Araki, “Practical evaluation of on-demand smallcell ON/OFF based on traffic model for 5G cellular networks,” IEEE WCNC 2016, Apr. 2016.
  • H. Kamata, G.K. Tran, K. Sakaguchi, K. Araki, “Sub-optimal and Low complexity Signal Detection method based on Power Spectrum under Noise Uncertainty,” SmartCom2016, Vol. 2016-5-SR, May 2016.
  • M. Ando, T. Taniguchi, M. Noda, A. Yamaguchi, K. Sakaguchi, G.K. Tran, “PoC of mmWave (40 and 60 GHz) Integrated 5G Heterogeneous Networks,” EW2016, May 2016.
  • A. Haniz, G.K. Tran, K. Saito, K. Sakaguchi, J. Takada, D. Hayashi, T. Yamaguchi, S. Arata, “Dynamic Tracking of Unknown Emitters in Urban Environments using Particle Filters,” SmartCom2016, Vol. 2016-5-SR, May. 2016.
  • K. Sakaguchi and T. Haustein, “Millimeter wave on Your Hand in 5G,” in Proc. EuCNC 2016, June 2016.
  • K. Sakaguchi and M. Nekovee, “5G channel models in mmWave frequency bands and initial system level evaluation,” in Proc. WWRF 36, June 2016. (Invited Talk)
  • G.K. Tran, H. Shimodaira, K. Sakaguchi, “Evaluation of mmWave overlaid 5G heterogeneous cellular networks – Suitable frequency bands for different 5G KPIs –,” APWCS 2016, Aug. 2016.
  • K. Sakaguchi, “Millimeter-wave for 5G from MiWEBA to 5G-MiEdge,” in Proc. EuMW 2016, Oct. 2016. (Keynote Speech)
  • D. Kitahara, H. Yoshiizumi, R. Suga, K. Araki, and O. Hashimoto, “A Study of Design Method of Circular Patch Array Absorber for Oblique Incidence,” Proceedings of the 466th European Microwave Conference (EuMC 2016), pp.329-332, Oct. 2016.
  • T. P. Do, K. Araki, J. Hirokawa, and M. Ando, “Signal Flow Graph model for Distance-dependent Transfer Function between two antennas in Short-Range Communication,” Intl. Symp. Antennas Propag., POS2-63, Oct. 2016.
  • G.K. Tran, K. Sakaguchi, K. Araki, M. Ando, J. Hirokawa, K. Fukawa, Y. Chang, J. Takada, K. Saito, A. Matsuzawa, K. Okada, M. Miyahara, “Technical Challenges to Realize mmWave based 5G Cellular Networks,” IEICE RCS Technical Committee, Oct. 2016.
  • G.K. Tran, K. Sakaguchi, M. Ando, “mmWave Access/Backhaul Integrated 5G Heterogeneous Networks,” FUSECO Forum 2016, Nov. 2016.
  • G.K. Tran, K. Sakaguchi, M. Ando, “Toward the Realization of mmWave based 5G Cellular Networks,” WPMC2016, Nov. 2016.
  • K. Sakaguchi, “Millimeter-wave small cells vs. below 6GHz Massive MIMO –which can give greater value?-,” IEEE Globecom 2016, Washington DC, Dec. 5, 2016. (Panelist)
  • T. P. Do, K. Araki, J. Hirokawa, and M. Ando, “Estimation of Interference between Antennas in Short Range Communication using Signal Flow Graph,” Malaysia-Japan Workshop Radio Tech., 4, Jan. 2017.
  • N. Golmie, N.G Prelcic, S. Rangan, D. Michelson, G.K. Tran, “[Panel discussion] Prevalent challenges for the adaptation of mm-wave technology for 5G,” WCNC2017 mmW5G workshop, Mar. 2017.

Domestic Conference

  • G.K. Tran, H. Shimodaira, K. Sakaguchi, K. Araki, “Dynamic ON/OFF of smallcell BS in C-RAN based 5G HetNet supporting user’s satisfaction,” IEICE RCS Technical Committee, Vol. 2016-04-RCS, Apr. 2016.
  • A. Haniz, G.K. Tran., K. Saito, K. Sakaguchi., J. Takada., D. Hayashi, T. Yamaguchi, S. Arata, “Dynamic Tracking of Unknown Emitters in Urban Environments using Particle Filters,” IEICE SRW Technical Committee, Vol. 116, No. 30, Apr. 2016.
  • D. Kitahara, H. Yoshizumi, R. Suga, K. Araki, O. Hashimoto, “A Study of Design Method of Circular Patch Array Absorber for Oblique Incidence” IEICE technical report, MW2016-21, pp.57-60 May. 2016.
  • H. Ogawa, H. Shimodaira, G.K. Tran, K. Sakaguchi, T. Haustei, “Joint RAN/Backhaul Optimization for Millimeter-wave 5G”, IEICE Technical Report, RCS2016-92, Jun. 2016.
  • H. Shimodaira, G.K. Tran, K. Sakaguchi, K. Araki. A Study on the Optimal Combination of Cooperative Transmission Scheme and Frequency Band for 5G, SR Technical Committee, IEICE technical report, IEICE, Vol. 2016-07-SR, Jul. 2016.
  • Y. Chang, Sayako Haze, G.K. Tran, K. Sakaguchi, K. Araki, Hikokazu Fukawa, “User Scheduling for Millimeter Wave MU-MIMO in Small Conference Room–Evaluation with 3-sector Access Point Model and Proportional Fairness –,” BCT Technical Committee, Jul. 2016.
  • H. Saito, R. Suga, K. Araki, O. Hashimoto, “Incident Angle Distribution of Interference Wave in Wireless LAN for Wide Angle Design of Dry Double Wall with FSS,” IEICE Society Conference, B-5-109, p.379 Sep. 2016.
  • H. Shimodaira, G.K. Tran, K. Sakaguchi, K. Araki, “Cell Association Method with QoS Consideration for Heterogeneous Networks,” IEICE Society Conference, Sep. 2016.
  • D. Kitahara, H. Yoshizumi, R. Suga, K. Araki, O. Hashimoto, “An experimental evaluation of circular patch array absorber for oblique incidence,” IEICE Society Conference, C-2-56, p.66 Sep. 2016.
  • A. Haniz, G.K. Tran, K. Sakaguchi, J. Takada, T. Yamaguchi, T. Mitsui, S. Arata, “Optimization of Sensor Layout for Localization using Signal Strength Difference Fingerprints,” IEICE Society Conference, Sep. 2016.
  • Yuka Nakamura, H. Yoshizumi, R. Suga, K. Araki, O. Hashimoto, “An Analytical Study on Circular Patch Array Absorber using Two Types of Frequency Selective Surface,” IEICE General Conference, C-15-4, p.211 Sep. 2016.
  • H. Yoshizumi, R. Suga, K. Araki, O. Hashimoto, “A Study on Wide-band Laminated Circular Patch Array Absorber and Its Operation Frequency Design,” IEICE technical report, MW2016-115, pp.137-140 Oct. 2016.
  • R. Kosaka, G.K. Tran, K. Sakaguchi, K. Araki, “[Poster Presentation] Indoor Localization System with Wi-Fi Fingerprints and Pedestrian Dead Reckoning ,” CQ Technical Committee, IEICE technical report, Vol. 2016-10-CQ, Oct. 2016.
  • Y. Nakamura, H. Yoshizumi, R. Suga, K. Araki, O. Hashimoto, “An Operating Analysis of 2.4 GHz Band Circular Patch Array Absorber Using FSSs with Out of Band Transmission Characteristics,” IEICE technical report, EST2016-92, pp.69-73 Jan. 2017.
  • H. Saito, R. Suga, K. Araki, O. Hashimoto, “A Wide Angle Design of Dry Double Wall with FSS for Improvement of Indoor Wireless LAN Communication Environment,” IEICE technical report, EST2016-93, pp.75-80, Jan. 2017.
  • Y. Nakamura, H. Yoshizumi, R. Suga, K. Araki, O. Hashimoto, “An Analytical Study on Out-of-Band Transmission Improvement of Circular Patch Array Absorber using Band Stop and Pass FSSs,” IEICE Society Conference, C-2-49, Mar. 2017.
  • T. Ruckkwaen, M. Ando, J. Hirokawa, K. Toyosaki, M. Zhang, K. Araki, “Mechanism Extraction of Bit Error Rate Distribution in Compact Range Communication”, IEICE General Conference, B-19-14, Mar. 2017.
  • A. Haniz, G.K. Tran, K. Sakaguchi, J. Takada, T. Yamaguchi, S. Arata, “Preliminary Statistical Analysis of Localization Error in the Presence of Spatial Correlation,” IEICE General Conference, Mar. 2017.


2015 Fiscal Year

Journal

  • Shinya Kitagawa, Ryosuke Suga, Kiyomichi Araki, and Osamu Hashimoto, “Dual-polarization RCS Reduction of X-band Antenna using Switchable Reflector,” IEICE Trans. Electron., vol.E98-C, no. 7, pp. 701-708, July 2015.
  • Azril HANIZ, Gia Khanh TRAN, Ryosuke IWATA, Kei SAKAGUCHI, Jun-ichi TAKADA, Daisuke HAYASHI, Toshihiro YAMAGUCHI, Shintaro ARATA. “Propagation Channel Interpolation for Fingerprint-Based Localization of Illegal Radios, ” IEICE Trans. Commun., IEICE, Vol. E98-B, No. 12, Dec. 2015.
  • Shinya Kitagawa, Ryosuke Suga, Osamu Hashimoto, and Kiyomichi Araki, “Microwave Absorption/Transmission Switchable Surface using Diodes,” IECIE Trans. C, vol.J98-C, no.12, pp. 338-347, Dec. 2015.
  • Hiroyuki Kamata, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki. “Robust and Low Complexity Bandwidth and Carrier Frequency Estimation for Cognitive Radio, ” IEICE Transactions on Communications, IEICE, Vol. E99-B, No. 2, Feb. 2016.

International Conference

  • Roya Rezagah, Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi. Architecture, “Algorithm & Protocol for RRM in 5G HetNet,” MiWEBA international workshop on Green 5G Networks, May. 2015.
  • Gia Khanh Tran, Hidekazu Shimodaira, Roya Rezagah, Kei Sakaguchi, Kiyomichi Araki. “Dynamic cell activation and user association for green 5G heterogeneous cellular networks, ” WDN-CN2015 Autumn, IEEE, Aug. 2015.
  • Roya Rezagah, Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi. “Dynamic Resource Management in Multi-band 5G HetNets,” APWCS2015, Aug. 2015.
  • Tao Yu, Yusuke Kuki, Gento Matsushita, Daiki Maehara, Seiichi Sampei, Kei Sakaguchi. “Deployment of LED light control system using battery-less wireless human detection sensor networks, ” RFID-TA 2015, IEEE, 2015.
  • H. Yoshiizumi, R. Suga, K. Araki, and O. Hashimoto, “A design of circular patch array Absorber based on patch antenna theory, ” Eur. Microw. Conf., P03-12, pp. 1100-1103, Sep. 2015.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Daisuke HAYASHI, Toshihiro YAMAGUCHI, Shintaro ARATA. “Localization of Illegal Radios Utilizing Phase-Difference as Location Fingerprints, ” 2015 URSI-Japan Radio Science Meeting, Sep. 2015.
  • Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki. “Investigation on Millimeter-wave Spectrum for 5G, ” CSCN2015, IEEE, Oct. 2015.
  • Roya Rezagah, Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi, Shinobu Namba. “Cell Discovery in 5G HetNets Using Location-Based Cell Selection,” CSCN2015, IEEE, Oct. 2015.
  • Yuyuan Chang, Gia Khanh Tran, Kei Sakaguchi and Kiyomichi Araki, “Inter-carrier Interference Compensation Scheme for Millimeter Wave OFDM Systems,” SmartCom 2015, poster session, 26-27 Oct. 2015.
  • Azril HANIZ, Gia Khanh TRAN, Kei SAKAGUCHI, Jun-ichi TAKADA, Daisuke HAYASHI, Toshihiro YAMAGUCHI, Shintaro ARATA. “Localization of Illegal Radios Utilizing Cross-correlation of Channel Impulse Response with Interpolation in Urban Scenarios,” IEEE Military Communications Conference 2015, Oct. 2015.
  • Ilya Bolotin, Alexander Maltsev, Andrey Pudeyev, Gregory Morozov, Alexei Davydov, Hidekazu Shimodaira, Gia Khanh Tran. “Performance Evaluation of Interference Mitigation Techniques in the Overlaying MmWave Small Cell Network,” CSCN2015, IEEE, Oct. 2015.
  • Miao Zhang, Masahiro Wakasa, Kiyomichi Araki, Jiro Hirokawa and Makoto Ando, “Analysis of Intersymbol Interference in a 60 GHz-Band Compact-Range Wireless Access System Using Various Large Array Antennas,” Proc. of International Symposium on Antennas and Propagation (ISAP), Session S3.3.4, pp.167-168, Hobart, Tasmania, Australia, November 12, 2015.
  • Yuyuan Chang, Gia Khanh Tran, Kei Sakaguchi and Kiyomichi Araki, “Evaluation of Oversampling Rate Limited Dual-Channel Digital Predistortion with 3-Box Nonlinear Model of Power Amplifier,” IWS2016, WE-3-C-1, 14-16 March 2016.

Domestic Conference

  • Shinya Kitagawa, Ryosuke Suga, Osamu Hashimoto, and Kiyomichi Araki, “Study on Equivalent Model for Patch Array Antenna RCS,” IEICE Technical Report, EST2015-7, pp. 33-38, May 2015.
  • Shinya Kitagawa, Ryosuke Suga, Osamu Hashimoto, and Kiyomichi Araki, “Application of Microwave Absorption/Transmission Switchable Surface to Radome,” IEICE Technical Report, MW2015-43, pp. 29-34, June 2015.
  • Miao Zhang, Kiyomichi Araki, Jiro Hirokawa and Makoto Ando, “Evaluations of Coverage and Intersymbol Interference in a 60 GHz-Band Compact-Range Wireless Access System using Large Array Antennas,” IEICE Tech. Rep., vol.115, no.164, AP2015-44, pp.27-32, July 2015.
  • Gia Khanh Tran, Ryosuke Iwata, Ehab Mahmoud Mohamed, Kei Sakaguchi. [Invited Lecture] “WiFi Fingerprint based Coordinated Mm-wave Beamforming,” AP Technical Committee, IEICE technical report, IEICE, Jul. 2015.
  • Masahiro Wakasa,Miao Zhang,Jiro Hirokawa, Kiyomichi Araki and MakotoAndo, “Intersymbol Interference Analysis of a Compact-range High-speed Wireless Communication System using Traveling-wave-fed Slot Arrays,” IEICE Tech. Rep., vol.115, no.164, AP2015-45, pp.33-37, July 2015.
  • Kouji Toyosaki, Miao Zhang,Masahiro Wakasa, Kiyomichi Araki, Jiro Hirokawa and Makoto Ando, “Study of Reception Zone in a Millimeter Wave Compact-Range Wireless Access System Using a Large Array Antenna,” IEICE Tech. Rep., vol.115, no.199, AP2015-67, pp.37-41, Aug. 2015.
  • Gia Khanh TRAN, Hidekazu SHIMODAIRA, Kei SAKAGUCHI. [Invited Lecture] “Green 5G HetNet with C-RAN based Dynamic Resource Management,” IEICE Society Conference, IEICE Society Conference 2015, Sep. 2015.
  • Yuyuan Chang, GiaKhanh Tran and Kiyomichi Araki, “Dual-Channel Digital Predistortion for Memory Nonlinear Power Amplifier with Limited Oversampling Rate,” IEICE Society Conf., BS-6-34, 8-11, Sept. 2015.
  • Shinya Kitagawa, Ryosuke Suga, Osamu Hashimoto, and Kiyomichi Araki, “Study on RCS Analysis of Dipole Array with Reflector Based on Surface Impedance,” IEICE Society. Conf., C-15-11, p. 202, Sept. 2015.
  • Miao Zhang, Kouji Toyosaki, Masahiro Wakasa, Kiyomichi Araki, Jiro Hirokawa and Makoto Ando, “A Study on the 60 GHz-band Compact-Range Wireless Access System using a Large Array Antenna”, IEICE Society Conference, BS-1-12, Sept. 2015
  • Ehab Mahmoud Mohamed, Gia Khanh Tran, Kei Sakaguchi, Seiichi Sampei. [Technology exhibit] “Hardware Demonstration of WiFi fingerprint based mmWave beamforing,” SR Technical Committee, IEICE technical report, IEICE, Oct. 2015.
  • Kei Sakaguchi, Gia Khanh Tran, Kiyomichi Araki, Makoto Ando, JIRO HIROKAWA, Kazuhiko Fukawa, Yu Yuan Chang, Jun-ichi Takada, Kentaro Saito, Akira Matsuzawa, Kenichi Okada, Masaya Miyahara. [Invited Talk] “5G from Tokyo Institute of Technology Point of View — For Realization of Millimeter-wave Heterogeneous Networks –,” RCS Technical Committee, IEICE technical report, IEICE, Oct. 2015.
  • Yuyuan Chang, Keisukei Hirota, Gia Khanh Tran, Kei Sakaguchi and Kiyomichi Araki, “A Study of User Scheduling for Millimeter Wave MU-MIMO Systems: Evaluation with Small Conference Room Channel Model and 3-sector Access Point,” IEICE AP/RCS tech. report, 4-6 Nov. 2015.
  • Gento Matsushita, Daiki Maehara, Kei Sakaguchi, Seiichi Sampei. “Prototype system of a multi-point wireless energy transmitter embedded in LED light,” IEICE Tech. Rep., vol. 115, no. 289, WPT2015-57, pp. 55-60, Nov. 2015
  • Masahiro Suneya, Hideyuki Yamada, Gia Khanh Tran, Kiyomichi Araki. “Construction of the LCR・AFD model of the V2V communication,” 13th ITS symposium 2015, Dec. 2015.
  • ThanhPhan DO, Kiyomichi ARAKI, Takayuki KOHAMA, Yuki IIDA, Takuichi HIRANO, Jiro HIROKAWA, Makoto ANDO, “Signal Transfer function for Short Range Wireless Communication with Multiple Reflection between Tx and Rx Antennas”, IEICE Tech. Rep., vol.115, no.390, AP2015-171, pp.21-26, Jan.2016.
  • Yu Yuan Chang, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki. [Invited Lecture] “Simple Inter-carrier Interference Compensation Scheme for Millimeter Wave OFDM Systems — PER Evaluation considering Channel Estimation –,” SR Technical Committee, IEICE technical report, IEICE, Vol. 2016-3-SR-RCS-CCS-SRW, Mar. 2016.
  • Azril HANIZ, Gia Khanh TRAN, Kentaro SAITO, Kei SAKAGUCHI, Jun-ichi TAKADA, Daisuke HAYASHI, Toshihiro YAMAGUCHI, Shintaro ARATA. [Invited Lecture] “Fingerprint-based Localization of Unknown Radio Emitters in Non Line-of-Sight Environments,” SR Technical Committee, IEICE Technical Report, IEICE, Vol. 2016-3-SR-RCS-CCS-SRW, Mar. 2016.
  • Ryouta Kosaka, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki. “Indoor Localization System based on Multiple AP and its Experimental Investigation,” SR Technical Committee, IEICE technical report, IEICE, Vol. 2016-3-SR-RCS-CCS-SRW, Mar. 2016.
  • Sayako Haze, Yu Yuan Chang, Gia Khanh Tran, Kiyomichi Araki. “Design of Indoor Multiuser MIMO Systems considering Fairness at 60 GHz — User Scheduling considering Proportional Fairness –,” RCS Technical Committee, IEICE technical report, IEICE, Vol. 2016-3-SR-RCS-CCS-SRW, Mar. 2016.


2014 Fiscal Year

Journal

  • D. Maehara, G. K. Tran, K. Sakaguchi, K. Araki, M. Furukawa, “Experiment Validating the Effectiveness of Multi-point Wireless Energy Transmission with Carrier Shift Diversity, ” IEICE Trans. Commun., Vol. E97-B, No. 09, Sep. 2014.
  • Jeong Jeaho, Gia Khanh Tran, Kiyomichi Araki, “Complexity-Reduced Low Noise Matching Design of Receiver Front-end Amplifiers with Mutually Coupled 2×2 MIMO Antennas,” IEICE Trans. Electron, IEICE, Vol. E97-C, No. 10, Oct. 2014.
  • R. Rezagah, G. Khanh Tran, K. Sakaguchi, K. Araki, S. Konishi, “Large Scale Cooperation in Cellular Networks with Non-uniform User Distribution,” IEICE transactions on Communications, Vol. E97-B, No.11, pp. 2512-2523, Nov. 2014.
  • Kei Sakaguchi, Gia Khanh Tran, Hidekazu Shimodaira, Shinobu Namba, Toshiaki Sakurai, Isabella Siaud, Koji Takinami, Emilio Calvanese Strinati, Antonio Capone, Ingolf Karls, Reza Arefi, Thomas Haustein, “Millimeter-wave Evolution for 5G Cellular Networks,” Position Papers Exploring Innovative Intelligence and Technologies in Communications, IEICE Trans. Commun., IEICE, Vol. E98-B, No. 3, Mar. 2015.
  • Ikuma Ando, Gia Khanh Tran, Kiyomichi Araki, Takayuki Yamada, Takana Kaho, Yo Yamaguchi, Tadao Nakagawa, “Experimental Validation of Digital Pre-distortion Technique for Dual-band Dual-signal Amplification by Single Feedback System Employing Dual-band Mixer,” IEICE Transactions on Electronics, IEICE, Vol. E98-C, No. 3, Mar. 2015.

International Conferences

  • Richard J. Weiler, Michael Peter, Wilhelm Keusgen, Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi, “Outdoor Millimeter-Wave Access for Heterogeneous Networks – Path Loss and System Performance,” IEEE PIMRC2014, WDN-CN2014, Sep. 2014.
  • E. M. Mohamed, K. Sakaguchi and S. Sampei, “Delayed offloading using cloud cooperated millimeter wave gates,” IEEE PIMRC, Sept. 2014.
  • H. Shimodaira, G. K. Tran, K. Araki, K. Sakaguchi, S. Namba, T. Hayashi, S. Konishi, ”Cell Association Method for Multiband Heterogeneous Networks,” IEEE PIMRC2014, WDN-CN2014, Sep. 2014.
  • Jeong Jeaho, Gia Khanh Tran, Kiyomichi Araki, “Ergodic Capacity with Optimal Matching for Spatially Correlated 2×2 MIMO systems in 3-D Isotropic Scattering Environment,” 2014 Asia-Pacific Microwave Conference, APMC2014, Nov. 2014.
  • K. Matsumoto, Y. Y. Chang, G. K. Tran, K. Araki., “Frequency Domain Phase Noise Compensation Employing Adaptive Algorithms for Millimeter-Wave OFDM Systems,” Microwave Conference Proceedings (APMC), 2014 Asia-Pacific, pp.1262-1264, 4-7 Nov. 2014.
  • G. Matsushita, D. Maehara, Y. Kuki, K. Sakaguchi, S. Sampei, K. Araki, “Wireless Grid to realize Battery-less Sensor Networks in Indoor Environments,” in Proc. of IEICE APMC2014, Nov. 2014.
  • Takuya Ishihara, Kei Sakaguchi, Seiichi Sampei, Gia Khanh Tran, “Base Station Antenna Configuration for Robust MU-MIMO,” ICCS 2014, Nov. 2014.
  • D. Maehara, G. Matsushita, Y. Kuki, K. Sakaguchi, S. Sampei, K. Araki, “[Reqested talk] Development of Battery-less Sensor Networks for LED Light Control System,” in Proc. of IEICE SmartCom2014, Oct. 2014.
  • Ryosuke Iwata, Gia Khanh Tran, Kei Sakaguchi, “A Novel RF Fingerprint Management Architecture for Wi-Fi Fingerprinting Localization,” in Proc. of IEICE SmartCom2014, Oct. 2014.
  • Shozo Okasaka, Toshiaki Sakurai, Seigo Nakao, Shinobu Namba, Gia Khanh Tran, Kei Sakaguchi, “[Technology Exhibit] Development of control and user plane-splitting heterogeneous cellular networks,” SR Technical Committee, IEICE technical report, IEICE, Oct. 2014.
  • Azril Haniz, Gia Khanh Tran, Daisuke Hayashi, Toshihiro Yamaguchi, Shintaro Arata, Ryosuke Iwata, Kei Sakaguchi, Jun-ichi Takada, “[Poster Presentation] Statistical Propagation Channel Interpolation for Detecting Illegal Radio Emitters in Urban Environment,” SR Technical Committee, IEICE technical report, IEICE, Oct. 2014.
  • E. M. Mohamed, K. Sakaguchi and S. Sampei, “Delayed offloading zone associations using cloud cooperated heterogeneous networks,” IEEE WCNC workshops, Mar. 2015.
  • Keisuke Hirota, Yuyuan Chang, Gia Khanh Tran and Kiyomichi Araki, “User Selection Algorithm with RF Beamforming for Millimeter-wave MU-MIMO Systems,” JEC-ECC 2015, Mar. 2015.

Domestic Conferences

  • Ryouta Kosaka, Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, “Antenna Design with Transmit Beam-forming Control for Robust Base Station Cooperation Multi User-MIMO Systems,” SR Technical Committee, IEICE technical report, IEICE, Vol. 2014-07-RCC-ASN-NS-RCS-SR, Jul. 2014.
  • Kei Sakaguchi, Hidekazu Shimodaira, Gia Khanh Tran, “[MiWEBA] Role of Millimeter-Wave in 5G Heterogeneous Cellular Networks,” IEICE Society Conference, Sep. 2014.
  • Jeong Jeaho, Gia Khanh TRAN, Kiyomichi ARAKI, “Noise figure of matching circuit on lossy condition in 2×2 symmetrical MIMO receiver system,” IEICE Society Conference, Sep. 2014.
  • Noriaki NAGASHIMA, Keisuke HIROTA, Yu Yuan Chang, Gia Khanh TRAN, Kiyomichi ARAKI, “Study on Beamforming with Parasitic Antenna Element and Improvement of BER Characteristic for 60 GHz Millimeter Wave,” IEICE Society Conference, Sep. 2014.
  • Keisuke Hirota, Yuyuan Chang, Gia Khanh Tran and Kiyomichi Araki, “Study of Channel Modeling at 60 GHz Band using Ray-trace Simulation,” IEICE Society Conference, Sep. 2014.
  • K. Matsumoto, Y. Y. Chang, G. K. Tran, K. Araki.,” Low-Complexity Phase Noise Compensation Employing Frequency Domain Linear Processing for Millimeter-Wave OFDM Systems,” IEICE Tech. Rep., vol. 114, no. 376, MW2014-158, pp. 53-58, Dec. 2014.
  • Keisuke Hirota, Yuyuan Chang, Gia Khanh Tran and Kiyomichi Araki, “Design of Indoor Multiuser MIMO-OFDM System at 60GHz — Study of 36 Channel Modeling and User Selection –,” IEICE Tech. Rep., vol. 114, no. 367, SRW2014-38, pp. 17-22, Dec. 2014.
  • H. Shimodaira, G. K. Tran, K. Sakaguchi, K. Araki, “Investigation on Millimeter-wave Spectrum for 5G,” IEICE Technical Report, Vol. 2015-01-SR, Jan. 2015.
  • H. Shimodaira, G. K. Tran, K. Sakaguchi, K. Araki, “Cell Association Method for Millimeter Wave Heterogeneous Network with MU-MIMO,” IEICE Technical Report, Vol. 2015-03- RCS-SR-SRW, Mar. 2015.
  • Gia Khanh Tran, Hidekazu Shimodaira, Kei Sakaguchi, Kiyomichi Araki, “[MiWEBA] Study on dynamic ON/OFF cell association in cloud cooperated HetNet” SR Technical Committee, IEICE technical report, IEICE, Vol. 2015-03-SR, Mar. 2015.
  • Kei Sakaguchi, Daiki Maehara, “LED Control System using Battery-less Sensor Activated by Wireless Energy Transmission,” IEICE General Conference, Tutorial Session, Mar. 2015. [30] E. M. Mohamed, H. Kusano, K. Sakaguchi, S. Miyamoto, and S. Sampei, “WiFi Assisted dual-band MAC protocol for coordinated beamforming among WiGig APs in indoor environment,” in TR of IEICE, Mar. 2015.
  • Yusuke Kuki, Yu Tao, Gento Matsushita, Daiki Maehara, Kei Sakaguchi, Seiichi Sampei, “Development of Automatic LED Light Control System using Human Detection Sensor Network,” IEICE General Conference, Mar. 2015.


2013 Fiscal Year

Transactions and Letters

  • Kei Obara, Takayuki Inoue, Gia Khanh Tran, Kiyomichi Araki. ICI reduction technique by split OFDM, IEICE Communications Express, Vol. 2, No. 4, pp. 154-160, Apr. 2013.
  • G. K. Tran, R. Rindra, K. Sakaguchi, K. Araki, “An efficient relay placement method with power allocation for MIMO two-way multi-hop networks,” IEICE Trans. Commun., vol. E96-B, no. 5, pp. 1176-1186, May. 2013.
  • Kei Sakaguchi, Van Ky Nguyen, Yu Tao, Gia Khanh Tran, Kiyomichi Araki, “Distributed power control network and green building test-bed for demand response in smart grid,” IEICE Trans. Fundamentals, vol. E96-A, no.5, pp. 896-907, May 2013.
  • N. Lertwiram, G. K. Tran, K. Sakaguchi, K. Araki, “An Efficient Relay Node Placement Scheme for Two-way MIMO Multi-hop Networks in Practical Environment”, IEEE Trans.Wireless Commun., Vol. 12, no. 6, pp. 2977 – 2987, June 2013. [5] H. Shimodaira, G. K. Tran, K. Araki, K. Sakaguchi, S. Konishi, and S. Nanba, “Optimization of Picocell Locations and Its Parameters in Heterogeneous Networks with Hotspots,”IEICE Trans. Commun., vol. E96-B, no. 6, pp. 1338–1347, Jun. 2013.
  • I. Ando, G. K. Tran, K. Araki, T. Yamada, T. Kaho, Y. Yamaguchi, and K. Uehara, “Nonlinear modeling and analysis on concurrent amplification of dual-band Gaussian signals,” IEICE Trans. Electronics, vol. E96-C, no. 10, pp. 1254-1262, Oct. 2013.

International Conferences

  • Daiki Maehara, Ryota Akai, Gia Khanh Tran, Kei Sakaguchi, Seiichi Sampei, Kiyomichi Araki, Hiroshi Iwai, “Experiment on Battery-less Sensor Activation via Multi-point Wireless Energy Transmission,” IEEE PIMRC2013, Sep. 2013.
  • H. Shimodaira, G. K. Tran, K. Sakaguchi, K. Araki, N. Miyazaki, S. Kaneko, S. Konishi, and Y. Kishi, “Diamond Cellular Network – Optimal Combination of Small Power Basestations and CoMP Cellular Networks,” IEEE PIMRC2013, WDN-CN2013, Sep. 2013.
  • Ryosuke Iwata, Vutha Va, Kei Sakaguchi and Kiyomichi Araki, “Experiment on MIMO Cognitive Radio using Tx/Rx Beamforming,” IEEE PIMRC2013, Sep. 2013.
  • Masahiro Suneya, Masashi Yamamoto, Hideyuki Yamada, Tomokazu Okugi, Kohei Matsumoto, Gia Khanh Tran, Kiyomichi Araki. “Fading characteristic modeling of V2V communication at 700MHz band and the system margin design,” 20th ITS World Congress Tokyo 2013, Oct. 2013.
  • Kei Sakaguchi, Seiichi Sampei, Hidekazu Shimodaira, Roya Rezagah, Gia Khanh Tran, Kiyomichi Araki. Cloud Cooperated Heterogeneous Cellular Networks, ISPACS 2013, Nov. 2013.
  • I. Ando, G. K. Tran, K. Araki, T. Yamada, T. Kaho, Y. Yamaguchi, and K. Uehara, “A New Architecture for Concurrent Dual-Band Digital PreDistortion,” IEEE APMC2013, Nov. 2013.
  • Yuyuan Chang, Noriaki Nagashima, Keisuke Hirota, Gia Khanh Tran, and Kiyomichi Araki, “Millimeter Wave MU-MIMO System with PAE Array,” TJMW2013, 2-4, Dec. 2013.
  • Roya E. Rezagah, Daisuke Matsuo, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Satoshi Konishi, “Large Scale Cooperation in Cellular Networks with Non-uniform User Distribution,” IEEE Globecom 2013: International Workshop on Emerging Technologies for LTE-Advanced and Beyond-4G, Dec. 2013.
  • Kohei Matsumoto, Thitapha Chanpokapaiboon, Takayuki Inoue, Kei Obara, Gia Khanh Tran, Kiyomichi Araki, “A mitigation method of intercarrier interference due to local oscillator phase Noise,” Thailand-Japan MicroWave, Dec. 2013.

Domestic Conferences

  • Kei Sakaguchi and Seiichi Sampei, “Future Perspective of Cloud Cooperated Heterogeneous Cellular Networks,” IEICE MWP2013-5, vol. 113, no. 19, Apr. 2013.
  • Daiki Maehara, Ryota Akai, Kei Sakaguchi, Seiichi Sampei, Kiyomichi Araki, Hiroshi Iwai, “Experimental Verification of Battery-less Sensor Activation via Multi-point Wireless Energy Transmission,” IEICE AP2013-7, vol. 113, no. 3, Apr. 2013.
  • Kentaro Sano, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Daisuke Hayashi, Toshihiro Yamaguchi, Shintaro Arata and Jun-ichi Takada, “Location Estimation Method of Radio Source by Using Widely Deployed Multi-sensor System in Urban Areas,” IEICE SR2013-20 vol. 113, no. 57, May. 2013.
  • Keisuke Hirota, Gia Khanh Tran, Kiyomichi Araki, “Transmission Performance Analysis of Narrowband BAN,” IEICE Technical Committee Meeting on Medical ICT, May 2013.
  • Kei Sakaguchi, Daiki Maehara, Seiichi Sampei, Kiyomichi Araki “New Wireless Infrastructure for Battery-less Sensor Networks in Indoor Environments,” IEICE SR2013-33, vol. 113, no .131, Jul. 2013.
  • N. Lertwiram, G.K. Tran, K. Sakaguchi, K. Araki, “Network planning methodology for wireless multi-hop networks in practical environments”, IEICE SR Technical Conf., 2013-07-SR, Jul. 2013.
  • I. Ando, G. K. Tran, K. Araki, T. Yamada, T. Kaho, and Y. Yamaguchi, “Evaluationon the Optimization of Parameters for Digital Predistortion with Orthogonal Polynomials on Concurrent Amplification of Dual-band Single-carrier Signals” IEICE MW2013-9, Sep. 2013.
  • Kei Sakaguchi, “Optimal Antenna Structure enables Multi-User MIMO to be Robust against Channel Variation,” IEICE Society Conference, Sep. 2013.
  • I. Ando, G. K. Tran, K. Araki, T. Yamada, T. Kaho, and Y. Yamaguchi, “Evaluation on the Optimization of Parameters for Digital Predistortion with Orthogonal Polynomials on Concurrent Amplification of Dual-band Multi-carrier Signals,” IEICE Society Conference, B-17-24, Sep. 2013.
  • Thitapha Chanpokapaiboon, Takayuki Inoue, Gia Khanh Tran, Kiyomichi Araki. “An Improved Phase Noise Reduction Technique in OFDM system,” IEICE Society Conference, BS-7-27, Sep. 2013.
  • Ryosuke Iwata, Vutha Va, Kei Sakaguchi and Kiyomichi Araki, “Experimental study on MIMO cognitive radio system using transmit/receive beamforming,” IEICE SR2013-60, vol. 113, no. 266, Oct. 2013.
  • I. Ando, G. K. Tran, K. Araki, T. Yamada, T. Kaho, and Y. Yamaguchi, “Experimental Validation of Digital Pre-distortion Technique for Multi-band Multi-signal Amplification by Single Feedback System Employing Multi-band Mixer,” IEICE MW2013-7, vol.113, no. 365, Dec. 2013.
  • Kohei Matsumoto, Masahiro Suneya, Masashi Yamamoto, Hideyuki Yamada, Gia Khanh Tran, Kiyomichi Araki, “Angular Profile Modeling of V2V Communications,” IEICE Technical Report SR2013-88, vol. 113, no. 400, Dec. 2013.
  • Kei Sakaguchi, “From Software Radio to Smart Radio,” IEICE SR2013-82, vol. 113, no. 400, Jan. 2014.
  • Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, “Base station power control in C-RAN based U/C splitting HetNet,” IEICE SR2013-86, vol. 113, no. 400, Jan. 2014.
  • T. Yamada, T. Kaho, Y. Yamaguchi, H. Shiba, T. Nakagawa, I Ando, G. K. Tran and K. Araki, “A Study on Digital Predistortion Technique for Dual-band Amplification with Different Output Power,” IEICE SR2013-24, vol. 113, no. 400, Jan. 2014.
  • Gia Khanh Tran, Ryosuke Iwata, Kei Sakaguchi, Kiyomichi Araki, “Research and Development of Space-Spectrum Sharing MIMO network,” IEICE SR2013, Mar. 2014.
  • Kei Sakaguchi, “Smart Radio World driven by Cloud Cooperated Heterogeneous Networks,” IEICE SR2013, Mar. 2014.
  • Kiyomichi Araki, “On the topics in a RF circuit design for the information transmission,” IEICE SR2013, Mar. 2014.
  • Kei Sakaguchi, “Suggestion for SR Technical Committee through International Research & Development Cooperation,” IEICE General Conference, Mar. 2014.
  • Kei Sakaguchi, Shinsuke Ibi, Shinichi Miyamoto, Seiichi Sampei, “[MiWEBA] Millimeter-Wave Evolution for Backhaul and Access,” IEICE General Conference, Mar. 2014.
  • Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, “[MiWEBA] A study on power control in C-RAN based U/C splitting HetNet,” IEICE General Conference, Mar. 2014.
  • Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Satoshi Konishi, Shinobu Nanba and Takahiro Hayashi, “[MiWEBA] Cell Association Method for Multi Band Heterogeneous Networks,” IEICE General Conference, Mar. 2014.
  • I. Ando, G. K. Tran, K. Araki, T. Yamada, T. Kaho, and Y. Yamaguchi, “Experimental Evaluation of 35 Compensatio Performance on Concurrent Amplification of Time Lagged Dual-band Signals” IEICE General Conference, C-2, Mar. 2014. [40] Kohei Matsumoto, Thitapha Chanpokapaiboon, Takayuki Inoue, Kei Obara, Gia Khanh Tran, Kiyomichi Araki, “A mitigation method of intercarrier interference due to local oscillator phase Noise,” IEICE General Conference, Mar. 2014.
  • Keisuke Hirota, Noriaki Nagashima, Yuyuan Chang, Gia Khanh Tran, Kiyomichi Araki, “Multiuser MIMO-OFDM at the Millimeter-Wave Band with PAE Beamforming”, IEICE General Conference, Mar. 2014.


2012 Fiscal Year

Transactions and Letters

  • Kim Min Jee, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki , “Performance Comparison between Open Loop and Closed Loop MIMO-OFDM Schemes using Analytical Approach”, IEICE Trans. Commun., Vol. E95-B, Nov 2012
  • N. Lertwiram, P. Popovski, K. Sakaguchi, “A Study of Trade-Off Between Opportunistic Resource Allocation and Interference Alignment in Femtocell Scenarios”, IEEE Wireless Commun. Letters, Vol. 1, No. 4, pp. 356 – 359, Aug. 2012
  • Jaeho Jeong, G. K. Tran, K. Araki, “Optimal Low Noise Single Front-end MIMO Receiver System with Parasitic Antenna Element”, IEICE Trans. Electron. Vol. E95-C. No. 10. IEICE, Oct 2012
  • Yohei Morishita, Noriaki SAITO, Koji Takinami, Kiyomichi Araki, “Design of a Direct Sampling Mixer with a Complex Coefficient Transfer Function”, IEICE Trans. Electron., Vol. E-95C. No. 6. pp. 999-1007, Jun 2012
  • N. Lertwiram, G. K. Tran, K. Mizutani, K. Sakaguchi, K. Araki , “Performance Analysis of MIMO Relay Network via Propagation Measurement in L-shaped Corridor Environment”, IEICE Trans. Commun.. Vol. E95-B. No. 04, Apr 2012
  • G. K. Tran, S. Tajima, R. Ramamonjison, K. Sakaguchi, K. Araki, S. Kaneko, N. Miyazaki, S. Konishi, Y. Kishi, “Study on Resource Optimization for Heterogeneous Networks”, IEICE Trans. Commun., Vol. E95-B, No. 04, Apr 2012

International Conference

  • Yohei Morishita, Kiyomichi Araki , “Nonlinear Analysis of MOS FET Passive Mixers as a Function of Local Signal”, APMC2012, Dec. 2012
  • Daisuke Matsuo, Roya Rezagah, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Shoji KANEKO, Noriaki Miyazaki, Satoshi Konishi, Yoji KISHI, “Shared Remote Radio Head Architecture to Realize Semi-Dynamic Clustering in CoMP Cellular Networks”, IEEE GLOBECOM 2012 Workshop on Multicell Cooperation, Dec 3, 2012
  • Kei Sakaguchi, “Enabling technologies for green by wireless – smart grid & battery-less sensor networks,” Advanced Wireless Communications Workshop, I2R & IEEE VTS Singapore Chapter, Nov. 21, 2012.
  • Kentaro Sano, Gia Khanh Tran, Masahiro Watanabe, Kei Sakaguchi, Kiyomichi Araki, Daisuke Hayashi, Toshihiro Yamaguchi, Shintaro Arata , “Multi-sensor Location Estimation for Illegal Cell-phone Use in Real-Life Indoor Environment”, IEEE ICCS 2012, Nov 21, 2012
  • Gia Khanh Tran, Kei Obara, Alden Ho, Kiyomichi Araki , “Theoretical analysis of ICI reduction methods due to phase noise and frequency offset in OFDM systems”, IEEE ICCS 2012, Nov 21, 2012
  • Kei Sakaguchi, “[Keynote speech] Basestation cooperation (CoMP) is ready for standardization & deployment,” URSI ISSSE 2012, Potsdam, Germany, Oct. 4th, 2012.
  • Daiki Maehara, G. K. Tran, K. Sakaguchi, K. Araki, T. Miyamoto, M. Furukawa, “Experimental Study on Multi-point Wireless Energy Transmission at 950MHz Band”, IEEE ISSSE 2012, Oct 3, 2012
  • Hidekazu Shimodaira, Gia Khanh Tran, Tajima Shinichi, Kei Sakaguchi, Kiyomichi Araki, Noriaki Miyazaki, Shoji KANEKO, Satoshi Konishi, Yoji KISHI , “Optimization of Picocell Locations and Its Parameters in Heterogeneous Networks with Hotspots”, IEEE PIMRC2012, Sep 9, 2012
  • Vutha Va, Keiichi Mizutani, Yutaro Kida, Kei Sakaguchi, Kiyomichi Araki, and Takehiro Miyamoto, “Experiment on MIMO Two-Way Relaying using Transmit Beamforming”, in Proceeding of IEEE PIMRC 2012, pp. 719-724, Sep. 2012
  • Kei Sakaguchi, Ky Nguyen, Daiki Maehara, Gia Khanh Tran, Kiyomichi Araki, “Design of distributed power control networks to realize smart grid,” IEEE VTS APWCS 2012, Kyoto, Japan, Aug. 23th, 2012.
  • Ikuma Ando, Gia Tran Khanh, Kiyomichi Araki, Takayuki Yamada, Yo Yamaguchi, Takana Kaho, “Design of Multi-band Predistorter and Modeling for Multi-band Power Amplifier”, 2012 Thailand-Japan MicroWave (TJMW2012), Aug 2012
  • Ikuma Ando, Yuyuan Chang, Kei Sakaguchi, Kiyomichi Araki , “Theoretical Analysis and Improvement of User Scheduling for MU-MIMO System Employing Block Diagonalization”, 2012 Asia Pacific Wireless Communications Symposium (APWCS 2012), Aug 24, 2012
  • Kei Sakaguchi “Indoor Wireless Grid to enable Battery-less Sensor Networks” Wireless Technology Park (WTP), July, 5th, 2012.
  • Rindranirina Ramamonjison, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki , “Distributed Optimization of Transceiver Weights in MIMO Two-way Multihop Networks”, IEEE VTC2012-Spring, May 2012
  • Yutaro Kida, Keiichi Mizutani, Gia Khanh Tran, Takehiro Miyamoto, Kei Sakaguchi, Kiyomichi Araki, “Network synchronization scheme for scalable two-way multi-hop network employing MIMO network coding”, IEEE VTC2012-Spring, May 2012
  • N. Lertwiram, G. K. Tran, K. Sakaguchi, K. Araki, “Relay Placement of Two-Way Multi-Hop Relay Network with Power Adaptation in a Realistic Shadowing Environment”, IEEE VTC2012-Spring, May 2012

Domestic Conferences

  • Ikuma Ando, Gia Khanh Tran, Kiyomich Araki, Takayuki Yamda, Takana Kaho, Yo Yamaguchi, ”Modeling for Wideband Power Amplifier on simultaneously Amplifying Single Carrier signals for User-centric Wireless Networks”, IEICE General Conference, Proc. of IEICE General Conference, Mar. 2013.
  • Hisashi Sakakibara, Gia Khanh Tran, Kiyomichi Araki, “Received power maximization problem under a given transmission system”, IEICE General Conferences, B-1-9, Mar, 2013
  • Yinpei Miao, Gia Khanh Tran, Kiyomichi Araki, “MIMO receivers with parasitic antenna,” Proc. of IEICE General Conference, B-1-214, Mar, 2013
  • Ryosuke Iwata, Va Vutha, Kei Sakaguchi, Kiyomichi Araki, ”Prototype for MIMO Cognitive Radio with Transmit/Receive Beamforming”, IEICE General Conference, Mar. 2013
  • Kohei Matsumoto, Gia Khanh Tran, Kiyomichi Araki, “Simplified Method of Average Packet Error Rate Calculation in Fading Environment”, IEICE General Conference, Gifu University, Gifu, Mar. 2013
  • Keisuke Hirota, Gia Khanh Tran, Kiyomichi Araki, “Packet Error Rate Analysis of Body Area Networks”, IEICE General Conference, Mar. 2013
  • Jaeho Jeong, Gia Khanh Tran and Kiyomichi Araki, “A study of matching circuit on a lossy condition for compact symmetrical MIMO receiver,” Proc. of IEICE General Conference, B-1-207, Mar, 2013
  • T. Yamada, I. Ando, G. K. Tran, K. Araki, K. Kaho, Y. Yamaguchi, K. Uehara, “Performance Evaluation of Digital Predistortion for Simultaneously Amplifying Two Single Carrier Signals on Dual-band in User-centric Wireless Network,” IEICE General Conference, Mar. 2013.
  • K. Yasui, D. Matsuo, K. Sakaguchi, S. Sampei, “Inter Cluster Interfere Cancellation Systems with using Shared RRH in Cooperative Base Station Systems,” Proc. Of IEICE General Conference, B-5-62, Mar, 2013
  • Y. Kuki, N. V. Ky, Y. TAO, K. Sakaguchi, S. Sampei, “Proposal of Control Layer for realizing Distributed Control Networks,” Proc. Of IEICE General Conference, AS3-2, Mar, 2013
  • R. Akai, K. Sakaguchi, S. Sampei, D. Maehara, “Prototype of Battery-less Sensor Network Drived by Wireless Energy Transmission,” Proc. Of IEICE General Conference, B-17-26, Mar, 2013
  • T. Ishihara, D. Sugimura, K. Sakaguchi, S. Sampei, “Optimal Base Station Antenna Design for Robust Multi User-MIMO Systems,” Proc. Of IEICE General Conference, B-5-9, Mar, 2013 [35] Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Satoshi Konishi, Noriaki Miyazaki, “Diamond Cellular Network — Combination of Small Power Basestations and CoMP Cellular Networks”, IEICE Technical Report, Feb 27, 2013.
  • Roya Rezagah, Daisuke Matsuo, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Satoshi Konishi, Noriaki Miyazaki , “Large Scale Cooperation in Cellular Networks with Non-uniform User Distribution”, IEICE Technical Report, Feb 27, 2013.
  • Thitapha Chanpokapaiboon, Takayuki Inoue, and Kiyomichi Araki, “Inter carrier interference reduction of OFDM system with a novel self-cancellation scheme”, IEICE Technical Report, Feb 27, 2013
  • Van Ky Nguyen, Yusuke Kuki, Tao Yu, Gia KhanhTran, Kiyomichi Araki, Kei Sakaguchi, Seiichi Sampei, Demonstration of micro-smartgrid for peak power control, RRRC2012, Jan 11, 2013.
  • Takayuki Inoue, Kei Obara, Gia Khanh Tran, Kiyomichi Araki, Oscillator phase noise incurred ICI analysis and its reduction method for OFDM system at millimeter wave, RCS, Jan 31, 2013
  • Hisashi Sakakibara, Khanh Tran Gia, Kiyomichi Araki , “Transmission power optimization problem”, WPT, Dec 2012
  • Kei Sakaguchi, “[Requested Talk] Optimal antenna configuration for multi-user MIMO to be robust against channel variation,” IEICE Technical Report, AP2012-99, RCS2012-166, Nov. 15, 2012.
  • Van Ky Nguyen, Yusuke Kuki, Tao Yu, Gia Khanh Tran, Kiyomichi Araki, Kei Sakaguchi, Seiichi Sampei , “Distributed Power Control Network Utilizing Home-gateway”, RRRC2012, Oct 2012
  • Ikuma Ando, Gia Khanh Tran, Kiyomichi Araki, Takayuki Yamada, Takana Kaho, Yo Yamaguchi , “Analysis of OFDM signals on simultaneously amplifying multi-band signals”, IEICE Society Conference 2012, Sep 12, 2012
  • Jaeho Jeong, Gia Khanh Tran, Kiyomichi Araki , “A design of self noise matching circuit for compact MIMO system”, IEICE Technical Report. 2012-09-MW, Sep 27, 2012
  • Ikuma Ando, Gia Khanh Tran, Kiyomichi Araki, Takayuki Yamada, Takana Kaho(Saito), Yo Yamaguchi, Evaluation of a predistorter for OFDM signals on simultaneously transmitting multi-band signals, IEICE Technical Report. 2012-09-MW, Sep 27, 2012
  • Kei Sakaguchi, “[Panel] We can change from our technical committee of SR,” IEICE Technical Report, SR2012-25, Jul. 26th, 2012.
  • Namzilp Lertwiram, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki , “Practical Relay Node Placement for MIMO Two-way Relay Networks in a U-Shaped Corridor Environment”, IEICE Technical Report. 2012-07-SR, Jul 27, 2012
  • Hidekazu Shimodaira, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Noriaki Miyazaki, Shoji KANEKO, Satoshi Konishi, Yoji KISHI , “Optimal Picocell Deployment in Heterogeneous Networks with Hotspots”, IEICE Technical Report. 2012-07-SR, Jul 27, 2012
  • Takayuki Yamada, Ikuma Ando, Gia Khanh Tran, Kiyomichi Araki, Takana Kaho(Saito), Yo Yamaguchi, Kazunori Akabane, Kazuhiro Uehara , “A Study on a Digital Predistortion for Multi-Band Multi-Signal Transmission of Flexible Wireless System”, IEICE Technical Report. 2012-07-SR, Jul 27, 2012
  • Ikuma Ando, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, “User scheduling in MU-MIMO system considering codebook design and interference among users”, RCS2012, May 18, 2012
  • Van Ky Nguyen, Daiki Maehara, Namzilp Lertwiram, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki , “Hardware Demonstration on Distributed Electric Power Control Network”, IEICE Technical Report. SR2012, May 2012
  • Kei Sakaguchi, “[Requested Talk],Green wireless-Supply & control of energy via wireless communications -” IEICE Technical Report, Apr. 19th, 2012.
  • Doppo Sugimura, Maki Arai, Kei Sakaguchi, Kiyomichi Araki, Takayuki Sotoyama, Masayuki Hoshino, “Optimization of Base Station Antenna Directivity for Base Station Cooperation Cellular Systems”, RCS2012-20, Apr 2012
  • Therdkiat Aphichartsuphapkhajorn, Yuyuan Chang and Kiyomichi Araki, “User Scheduling Algorithm with User grouping for Multi-user MIMO Downlink System utilizing Block Diagonalization,” IEICE Technical Report. 2012-12-NS, Feb 24th. 2012


2011 Fiscal Year

Transactions and Letters

  • G. K. Tran, S. Tajima, R. Ramamonjison, K. Sakaguchi, K. Araki, S. Kaneko, N. Miyazaki, S. Konishi, Y. Kishi., “Study on Resource Optimization for Heterogeneous Networks,” IEICE Trans. Commun., Vol. E95-B. No. 04., Apr 2012.
  • N. Lertwiram, G. K. Tran, K. Mizutani, K. Sakaguchi, K. Araki., “Performance Analysis of MIMO Relay Network via Propagation Measurement in L-shaped Corridor Environment,” IEICE Trans. Commun.. Vol. E95-B. No. 04., Apr 2012.
  • M. Yoshida, K. Sakaguchi, K. Araki, “Single Front-End MIMO Architecture with Parasitic Antenna Elements,” IEICE Trans. Commun., Vol.E95-B. No.3., Mar 2012
  • Naoki Kusashima, I. D. Garcia, Kei Sakaguchi, Kiyomichi Araki, Shoji KANEKO, Yoji KISHI, “Dynamic Fractional Base Station Cooperation using Shared Distributed Remote Radio Units for Advanced Cellular Networks,” IEICE Transaction on Communications. Vol. E94-B. no. 12. pp. 3259-3271, Dec 2011.
  • Yu Yuan Chang, Kiyomichi Araki, “Simplified Block Diagonalization for Multiuser MIMO Systems with Gram-Schmidt Orthogonalization,” IEICE Transaction on Fundamentals. Vol. E94-A. no. 11, Nov 2011.
  • Yu Yuan Chang, Kiyomichi Araki, “Simplified Capacity-based User Scheduling Algorithm for Multiuser MIMO Systems with Block Diagonalization,” IEICE Transaction on Communication. Vol. 94-B. No. 10, Oct 2011.
  • Yasuyuki Oishi, Shigekazu Kimura, Eisuke Fukuda, Takeshi Takano, Yoshimasa Daido, Kiyomichi Araki, “Iterative Determination of Phase Reference in IMD Measurement to Characterize Nonlinear Behavior, and to Derive Inverse, for Power Amplifier with Memory Effect, ” IEICE Transaction on Electronics. Vol. E94-C. No. 10. pp. 1515-1523, Oct 2011.
  • Takana Kaho(Saito), yo Yamaguchi, Kazuhiro Uehara, Kiyomichi Araki, “A low-noise High-gain Quasi-millimeter-wave Receiver MMIC with a Very High Degree of Integration Using 3D-MMIC Technology,” IEICE Transaction on Electronics. Vol. E94-C. No. 10. pp. 1548-1556, Oct 1, 2011.
  • Koji Okazaki, Kiyomichi Araki, “Detailed Analysis of Multilayer Broad-Side Coupler with a Symmetric Structure,” IEICE Transaction on Electronics. Vol. E94-C. No. 8. pp. 1253-1261, Aug 2011.

International Conference

  • Yuyuan Chang, Kiyomichi Araki, “Proportionally Fair User Scheduling for Multiuser MIMO Systems with Unequal Average SNR Users,” IEEE 75th Vehicular Tech. Conf. 2012-Spring (VTC’12-Spring), 6-9, May 2012.
  • Rindranirina Ramamonjison, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, “Distributed Optimization of Transceiver Weights in MIMO Two-way Multihop Networks” IEEE VTC2012-Spring., May 2012.
  • N. Lertwiram, G. K. Tran, K. Sakaguchi, K. Araki, “Relay Placement of Two-Way Multi-Hop Relay Network with Power Adaptation in a Realistic Shadowing Environment,” IEEE VTC2012-Spring., May 2012.
  • Yutaro Kida, Keiichi Mizutani, Gia Khanh Tran, Takehiro Miyamoto, Kei Sakaguchi, Kiyomichi Araki, “Network synchronization scheme for scalable two-way multi-hop network employing MIMO network coding,” IEEE VTC2012-Spring, May 2012.
  • Y.Morishita, Saito Noriaki, Kiyomichi Araki, “A Direct Sampling Mixer with Complex Coefficient Transfer Function in 65nm CMOS,” RFIC 2011, Jan 31, 2012.
  • Yohei Morishita, Kiyomichi Araki, “Design and Analysis of Direct Sampling Mixers,” IEEE APMC 2011, Jan 31, 2012.
  • Jaeho Jeong, Yinpei Miao, Kei Sakaguchi, Kiyomichi Araki, “Optimal Low Noise Design for Single Front-end Receiver with PAE,” KJMW2011 FR2-4-4, 10-11 Nov., 2011
  • Makoto Saito, Kiyomichi Araki, “Frequency Analysis of RF-DC Conversion Circuit for Rectenna on Equivalent Network,” KJMW2011 TH1-3-4, 10-11 Nov., 2011
  • Shintaro Oguchi, Kiyomichi Araki, “Performance Evaluation Method for Body Area Networks Based on Nakagami-m Channel Simulation,” KJMW2011 FR2-5-1, 10-11 Nov., 2011
  • Doppo Sugimura, Maki Arai, Kei Sakaguchi, Kiyomichi Araki, Takayuki SOTOYAMA, “A Study on Beam Tilt Angle of Base Station Antennas for Base Station Cooperation Systems,” IEEE PIMRC 2011, Sep 2011.
  • Daisuke Matsuo, Maki Arai, Kei Sakaguchi, Kiyomichi Araki, “A Study on Design of Spatial Fading Emulator Based on Clarke’s Model,” IEEE PIMRC 2011, Sep 2011.
  • Yu Yuan Chang, Kiyomichi Araki, “MP3-1 Simple Scheme for MIMO Wireless Systems with Gram-Schmidt Orthogonalization,” APWCS ’11, Aug 2011.
  • R. Ramamonjison, G. K. Tran, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, Noriaki Miyazaki, “Spectrum Allocation Strategies for Heterogeneous Networks,” ICST CrownCom2011, Jun 2011.
  • R. P. Wicaksono, G. K. Tran, K. Sakaguchi, K. Araki, “Wireless Grid: Enabling Ubiquitous Sensor Networks with Wireless Energy Supply,” IEEE VTC2011-Spring. May 2011.

Domestic Conference

  • Jaeho Jeong, Kiyomichi Araki, “Optimal Low Noise Design for SF-MIMO Receiver with Parasitic Antenna Element(PAE),” Proc. of IEICE General Conference, B-1-223, Mar, 2012
  • Takayuki Inoue, Kiyomichi Araki, “ICI analysis of OFDM in millimeter wave,” Proc. of IEICE General Conference, A-1-23, Mar, 2012
  • Nhu Quyen Duong, Kiyomichi Araki, Takayuki Yamada, Takana Kaho, Yo Yamaguchi, “A Study on Modeling for Harmonic Distortion in Wideband Amplifier,” Proc. of IEICE General Conference, A-1-39, Mar, 2012
  • Ikuma Ando, Yuyuan Chang, Kiyomichi Araki, “Theoritical Analysis of Simpli_ed User Scheduling Based on Channel Maximization,” Proc. of IEICE General Conference, B-5-2, Mar, 2012
  • Tharaka Nimantha Gunawardana, Kiyomichi Araki, “Relay Techniques for Long Life Wireless Body Area Network,” Proc. of IEICE General Conference, B-8-2, Mar, 2012
  • D.Matsuo, S.Tajima, K.Sakaguchi, K.Araki, S.Kaneko, N.Miyazaki, S.Konishi, Y.Kishi, “A Study on Multi-User MIMO Base Station Cooperation System with Semi-Static Clustering,” Proc. of IEICE General Conference, B-5-117, Mar, 2012
  • Masahiro Watanabe, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Daisuke Hayashi, Shintaro Arata, “Methods for improving the accuracy of ray-tracing propagation channels using measured channels from known sources,” Proc. of IEICE General Conference, B-1-24, Mar, 2012
  • Shinichi Tajima, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Noriaki Miyazaki, Shoji KANEKO, Satoshi Konishi, Yoji KISHI, “Resource Allocation Optimization for Fractional Frequency Sharing in Heterogeneous Networks,” Proc. of IEICE General Conference, B-5-115, Mar, 2012
  • Takana Kaho, Yo Yamaguchi, Hiroyuki Shiba, Kazunori Akabane, Kazuhiro Uehara, Kiyomichi Araki, “Study of a Multi-band Simultaneous Receiving Mixer with Independent Conversion Gain Control for User-centric Wireless Home Networks,” Proc. of IEICE General Conference, B-17-22, Mar, 2012
  • Kentaro Sano, Masahiro Watanabe, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Daisuke Hayashi, Shintaro Arata, “Method for Location Estimation of Cellular Phone with Illegal Use,” IEICE Tech. Rep., SR2011-131, Mar 2012.
  • Aphichartsuphapkhajorn Therdkiat, Chang Yuyuan, Kiyomichi Araki, “Power allocation for Block Diagonalization Multi-user MIMO downlink with fair user scheduling and unequal average SNR users,” IEICE Tech. Rep., RCS2011-275, Jan 26, 2012
  • Gia Khanh Tran, Rindranirina Ramamonjison, Kei Sakaguchi, Kiyomichi Araki, “Distributed and joint optimization of power and transceiver beam pattern in two-way MIMO relay networks,” IEICE Tech. Rep., RCS2011-244, Dec 15, 2011.
  • Shinichi Tajima, Tran Gia Khanh, Kei Sakaguchi, Kiyomichi Araki, Shoji KANEKO, Noriaki Miyazaki, Satoshi Konishi, Yoji KISHI, “Resource allocation model and parameter optimization in Heterogeneous Networks,” IEICE Tech. Rep., RCS2011-197, Nov 2011.
  • Maki Arai, Kei Sakaguchi, Kiyomichi Araki, Yoshio Koyanagi, Takayuki SOTOYAMA, “Optimization of MIMO Antenna Directivities and Derivation of Current Distributions by Using Spherical Mode Expansion,” IEICE Tech. Rep., AP2011-99, Nov 2011.
  • Van Ky Nguyen, Namzilp Lertwiram, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, “Study on Distributed Power Control Network to Suppress the Peak Power Consumption,” IEICE Tech. Rep., RRRC2011-13, Nov 1, 2011.
  • Masahiro Watanabe, Takao Sekiguchi, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Daisuke Hayashi, Shintaro Arata, “Detection of unidentified radio emitter employing multiple sensors toward the realization of distributed spectrum monitor,” IEICE Tech. Rep., Vol. IEICE-111. No. IEICE-SR-261. pp. 127-134. Oct 27, 2011.
  • Gia Khanh Tran, Putro Wicaksono Ragil, Daiki Maehara, Kei Sakaguchi, Kiyomichi Araki, Minoru Furukawa, “Link Design for Indoor Sensor Networks Driven by Wireless Power Transmission,” IEICE Tech. Rep., Vol. IEICE-111. No. IEICE-SR-261. pp. 135-142, Oct 27, 2011.
  • Kei Sakaguchi, Putro Wicaksono Ragil, Gia Khanh Tran, Daiki Maehara, Kiyomichi Araki, Minoru Furukawa, “Link Design and Evaluation for Indoor Sensor Networks with Wireless Energy Transmission,” IEICE Tech. Rep., SRW2011-15, Oct 2011.
  • Shinichi Tajima, Rindranirina Ramamonjison, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Noriaki Miyazaki, Shoji Kaneko, Yoji Kishi, “Optimization for Fractional Frequency Sharing in Heterogeneous Network,” IEICE Society Conference, BS-3-13, Sep 2011.
  • Keiichi Mizutani, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, “Network Synchronization for TDD-OFDM Two-way Multi-hop Relay Networks with MIMO Network Coding,” IEICE Society Conference, B-5-24, Sep 2011.
  • Hidekazu Shimodaira, Shinichi Tajima, Gia Khanh Tran, Kei Sakaguchi, Kiyomichi Araki, Shoji Kaneko, Noriaki Miyazaki, Yoji Kishi, “Design of Pico Cell Parameters in Heterogeneous Network,” IEICE Society Conference, BS-3-12, Sep 2011.
  • Yinpei Miao, Kiyomichi Araki, “The analysis of receiving system by using parasitic antenna element,” IEICE Technical Report, RCS2011, Aug 2011.
  • Kei Sakaguchi, Daisuke Matsuo, Naoki Kusashima, Shinichi Tajima, “RRH Based Base Station Cooperation Cellular Network and Resource Management,” IEICE Technical Report, RCS2011-86, Jul 2011.

Books

  • Kei Sakaguchi, “Frontiers of Wireless Power Transmission Technologies,”  CMCbooks Press, Dec 28, 2011.


2010 Fiscal Year

Transactions and Letters

  • G. S. Sampei, K. Sakaguchi, S. Ibi, K. Yamamoto, “Wireless distributed network for flexibile networking and radio resource management,” IEICE Trans. Commun., vol.E93-B, no.12, pp.3218-3227, Dec. 2010.
  • J. Lee, G.K. Tran, K. Sakaguchi, K. Araki, “Effect of power allocation schemes on MIMO two-way multi-hop network,” IEICE Trans. Commun., vol.E93-B, no.12, pp.3362-3370, Dec. 2010.
  • I.D. Garcia, K. Sakaguchi, K. Araki, “The Gaussian MIMO broadcast channel under receive power protection constraints,” IEICE Trans. Commun., vol.E93-B, no.12, pp.3448-3460, Dec. 2010.
  • H. Iwai, K. Sakaguchi, T. Sakata, A. Yamamoto, “Performance evaluation of spatial correlation characteristics for handset antennas using spatial fading emulator based on Clarke’s model,” IEICE Trans. Commun., vol.E930B, no.10, pp.2514-2522, Oct. 2010.
  • G.K. Tran, K. Sakaguchi, K. Araki, “MIMO network coding-based PHY/MAC protocol for replacement of CSMA/CA in efficient two-way multihop relay networks,” EURASIP J. Wireless Commun. Networking, vol.2010, ID 476732, 2010.
  • I.D.Garcia, N. Kusashima, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “Impact of base station cooperation on cell planning,” EURASIP J. Wireless Commun. Networking, vol.2010, ID 406749, 2010.
  • G.K. Tran, N.D. Dao, K. Sakaguchi, K. Araki, H. Iwai, T. Sakata, K. Ogawa, “Performance analysis of MIMO schemes in residential home environment via wideband MIMO propagation measurement,” IEICE Trans. Fundamentals, vol.E93-A, no.4, pp.814-829, Apr. 2010.
  • Yitao Zhang, Kiyomichi Araki, “A Novel Predistorter Design for Nonlinear Power Amplifier with Memory Effects in OFDM Communication Systems Using Orthogonal Polynomials,” IEICE Trans. Electron, Vol. E93-C, No. 7, pp. 983-990, Jul. 2010.
  • Yitao Zhang, Kiyomichi Araki,, “A Unified Distortion Analysis of Nonlinear Power Amplifiers with Memory Effects for OFDM Signals,” IEICE Trans. Electron, Vol. E93-C, No. 4, pp. 489-496, Apr. 2010.
  • Yasutake Ohishi, S Kimura, M Nakamura, K Nagai, E Fukuda, Y Daio, Kiyomichi Araki, “Efficient Method to Measure IMD of Power Amplifier with Simplified Phase Determination Procedure to Clarify Memory Effect Origins,” IEICE,Trans. Electron, Vol. E93-C, No. 7, pp. 1119-1125, Jul. 2010.
  • Yo Yamaguchi, T Kaho, M Sakaki, K Nishikawa, K Uehara, T Seki, T Nakagawa, Kiyomichi Araki,, “An Analysis of Multi-Layer Inductors for Miniaturizing of GaAs MMIC,” IEICE Trans. Electron, Vol. E93-C, No. 7, pp. 1119-1125, Jul. 2010.

International Conference

  • K. Sakaguchi, “Optimization of Antenna Directivities for Multiple Antenna Systems by Using Spherical Mode Expansion,” in Proc. IEEE iWAT, HongKong, Mar. 2011.
  • M. Arai, M. Iwabuchi, K. Sakaguchi, K. Araki, “Optimization of Diversity Antenna Directivities Based on Spherical Mode Expansion,” in Proc. IEICE APMC, Yokohama, Japan, Dec. 2010.
  • R. Ramamonjison, J. Lee, K. Sakaguchi, K. Araki, “Routing and Power Allocation in MIMO Two-way Multihop Networks: A New Cross-layer Approach to Mitigate Interference,” in Proc. IEEE Globecom, Miami, USA, Dec. 2010.
  • I.D.Garcia, N. Kusashima, K. Sakaguchi, K. Araki, “Dynamic Cooperation Set Clustering on Base Station Cooperation Cellular Networks,” in Proc. IEEE PIMRC, Istanbul, Turkey, Sep. 2010.
  • K. Mizutani, T. Miyamoto, K. Sakaguchi, K. Araki, “Network Throughput of TDD/TDMA Two-way Multi-hop Relay Network with MIMO Network Coding in Indoor Environment,” in Proc. IEEE PIMRC, WDN Workshop, Istanbul, Turkey, Sep. 2010.
  • R. Ramamonjison, J. Lee, K. Sakaguchi, K. Araki, “On the Spectral Efficiency of MIMO Two-way Multihop Networks with Co-existing Flows,” 5th International ICST Conference on Cognitive Radio Oriented Wireless Networks and Communications, Jun. 2010. [18] M. Arai, K. Sakaguchi, K. Araki, “Theoretical Analysis of Base Station Cooperation,” in Proc. IEEE AP-S, Toronto, Canada, July 2010.
  • T. Sekiguchi, K. Sakaguchi, K. Araki, S. Arata, “Performance Evaluation of Null-Steering Bistatic MIMO Radar,” in Proc. IEEE AP-S, Toronto, Canada, July 2010.
  • R. Ramamonjison, J. Lee, K. Sakaguchi, K. Araki, “On the Spectral Efficiency of MIMO Two-say Multihop Networks with Co-existing Flows,” in Proc. ICST CrownCom, Cannes, France, June 2010.
  • K. Mizutani, K. Sakaguchi, K. Araki, “Network Synchronization for Two-Way Multi-Hop Relay Networks with Block Modulation,” in Proc. IEEE VTC-Spring, Taipei, Taiwan, May 2010.
  • K. Mizutani, T. Miyamoto, T. Kanno, K. Sakaguchi, K. Araki, “Hardware Prototype for Two-Way Multi-Hop Relay Network with MIMO Network Coding,” in Proc. IEEE VTC-Spring, Taipei, Taiwan, May 2010.
  • G.K. Tran, K. Sakaguchi, K. Araki, “An Efficient Retransmission Scheme for MIMO Two-Way Relay Network Employing Network Coding,” in Proc. IEEE VTC-Spring, Taipei, Taiwan, May 2010.
  • N. Lertwiram, G.K. Tran, K. Mizutani, K. Sakaguchi, K. Araki, “MIMO Radio Propagation Measurement for Two-Hop Relay Network on L-Shaped Corridor with Network Performance Analysis,” in Proc. IEEE VTC-Spring, Taipei, Taiwan, May 2010.
  • Hiroka Shiozaki, Kiyomichi Araki, “Wide-Band Direct Sampling Mixer with Complex-Pole Synthesis,” APMC 2010, Jan. 2011.
  • Kousuke Aio, Kiyomichi Araki, “Nonlinear Analysis of Direct Sampling Mixers Using F-Matrix,” APMC 2010, Jan. 2011.
  • Atushi Yamamoto, Tsutomu Sakata, Toshiteru Hayashi, Koichi Ogawa, Kei Sakaguchi, and Jun-ichi Takada, “Procedure of designing the structural parameters of a spatial fading emulator,” COST 2100 10th Management Committee Meeting, TD(10)10016, Feb. 2010.
  • Toshiteru Hayashi, Atsushi Yamamoto, Tsutomu Sakata, Koichi Ogawa, Kei Sakaguchi, and Jun-ichi Takada, “Effect of delay wave on MIMO OTA throughput evaluation of a handset MIMO array using a spatial fading emulator,” COST 2100 10th Management Committee Meeting, TD(10)10018, Feb. 2010.
  • A. Yamamoto, T. Sakata, T. Hayashi, K. Ogawa, K. Sakaguchi, and J. Takada, Spatial Fading Emulator Applicable to a Handset MIMO Array Evaluation,” 2010 Asia-Pacific Radio Science Conference, Sept. 2010.
  • Y. Nakasha, N. Hara, K. Araki, “Performance Analysis of a 10-Gb/s Millimeter-Wave Impulse Radio Transmitter,” APMC 2010, Jan. 2011.

Domestic Conference

  • K. Sakaguchi, “Elemental Technology and Example of Basestation Cooperation Cellular Networks,” in Proc. IEICE General Conference, BT-6-9, Mar, 2011.
  • S. Tajima, N. Kusashima, K. Sakaguchi, K. Araki, S. Kaneko, N. Miyazaki, Y. Kishi, “Symbol synchronization for Base Station Cooperation MIMO-OFDM in Heterogeneous Network,” Proc. IEICE Gen. Conf., B-5-75, Mar, 2011.
  • D. Maehara, K. Mizutani, K. Sakaguchi, K. Araki, T. Shirato, M. Furukawa, K. Miyamoto, M. Negishi, “Solution technology of standing wave in wireless power transmission at 950MHz,” in Proc. IEICE General Conference, B-1-3, Mar, 2011.
  • D. Matsuo, M. Arai, K. Sakaguchi, K. Araki, “A Study on Arrangement of Scatterers for Realization of Spatial Fading Emulator,” in Proc. IEICE General Conference, BS-1-4, Mar. 2011.
  • D. Matsuo, M. Arai, K. Sakaguchi, K. Araki, “A Theoretical Study on Design of Spatial Fading Emulator Based on Clarke’s Model,” IEICE Tech. Rep., AP2010-183, Mar. 2011.
  • D. Sugimura，M．Arai，K．Sakaguchi，K．Araki， T．Sotoyama， “A Study on Vertical Pattern of Base Station Antennas for Base Station Cooperation System,” IEICE Tech. Rep., AP2010-182, Mar. 2011.
  • S. Tajima, N. Kusashima, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “Symbol synchronization for Base Station Cooperation MIMO in Heterogeneous Network,” IEICE Tech. Rep., RCS2010-306, Mar. 2011.
  • Y. Kida, K. Mizutani, T. Gia Khanh, T. Miyamoto, K. Sakaguchi, K. Araki, “Node Extension Typed Synchronization Method for MIMO Multi-hop Relay Network,” IEICE Tech. Rep., SR2010-93, Mar. 2011.
  • K. Sakaguchi, “Models for Heterogeneous Networks and Radio Resource Optimization,” IEICE Tech. Rep., RCS2010-278, MoMuC2010-91, SR2010-105, Mar. 2011.
  • K. Sakaguchi, K. Mizutani, R. Ramamomjison, G.K. Tran, “MIMO Two-Way Multi-hop Relay Networks,” IEICE Tech. Rep., NS2010-123, RCS2010-177, Dec. 2010.
  • K. Sakaguchi, “MIMO Channel Emulation for Design and Test of MIMO Antenna Systems,” Proc. IEICE Gen. Conf., B-5-11, Sep. 2010.
  • T. Sekiguchi, K. Sakaguchi, K. Araki, S. Arata, “Null-Steering Bistatic MIMO Radar,” IEICE Tech. Rep., AP2010-123, Nov. 2010.
  • N. Kusashima, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “Dynamic Clustering for Base Station Cooperation Cellular System using Remote Radio Head Network,” IEICE Tech. Rep., RCS2010-155, Nov 2010.
  • Y. Oh, K. Sakaguchi, K. Araki, “Hibyrid CSI Feedback and Precoding Method for MU-MIMO,” IEICE Tech. Rep., RCS2010-151, Nov 2010.
  • Y. Oh, I.D. Garcia, K. Sakaguchi, K. Araki, N. Kaneko, Y. Kishi,, “Hybrid channel state information feedback and precoding method for MU-MIMO on LTE-Advanced,” IEICE Society Conf., B-5-11, Sep. 2010.
  • S. Tajima, N. Kusashima, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “Hybrid CSI feedback and precoding method for MU-MIMO,” IEICE Society Conf., BS-2-17, Sep. 2010.
  • T. Kurosawa, K. Mizutani, T. Sasao, N. Arisaka, T. Miyamoto, K. Sakaguchi, K. Araki, “Development of Cognitive Wireless Node at 950MHz Band,” IEICE Tech. Rep., SR2010-12, May 2010.

Books

  • K. Araki, T. Itoh, Communicaiotn Transmission Engineering, Baifukan Press, Jul. 2010.
  • Seiichi Sampei, Kei Sakaguchi, Wireless Distribute Networks, IEIEC Press, Mar. 2011.


2009 Fiscal Year

Transactions and Letters

  • G. K. Tran, K. Sakaguchi, F. Ono, K. Araki, “2D MIMO network coding with inter-route interference cancellation,” IEICE Trans. Commun., Vol. E92-B, No. 12, pp. 3665-3675, Dec. 2009.
  • G. K. Tran, N. D. Dao, K. Sakaguchi, K. Araki, H. Iwai, T. Sakata, K. Ogawa, “Performance analysis of MIMO schemes in residential home environment via wideband MIMO propagation measurement,” IEICE Trans. Commun., Vol.E93-A, No.4, Apr. 2010.
  • K. Leng, K. Sakaguchi and K. ARAKI, “Performance evaluation of wireless sensor network based on MIMO relaying channel capacity,” IEICE Trans. Commun., E92.B (2009) , No. 10, pp. 3166-3173, Oct. 2009.
  • K. Leng, K. Sakaguchi and K. Araki, “Topology design and performance evaluation of wireless sensor network based on MIMO channel capacity,” IEICE Trans. Commun., E93.B, No. 1, pp. 22-28, Jan. 2010.
  • F. Ono, K. Sakaguchi, “STBC MIMO network coding for bi-directional multi-hop relay networks,” IEICE Trans. Commun., E92-B No. 12, Dec. 2009.

International Conference

  • Y. Zhang, K. Araki, “A novel analysis of predicting nonlinear distortions in power amplifier for a complex Gaussian process,” Proc. Korea-Japan Microwave Conference, Apr. 2009.
  • M. Iwabuchi, M. Arai, K. Sakaguchi and K. Araki, “Matched antenna design based on spherical mode expansion”, Proc. Int. Symp. Antennas and Propagation (ISAP), Thailand, Oct. 20-23 2009.
  • H. Shiozaki, T. Nasu, K. Araki, “Design and measurement of harmonic rejection direct sampling mixer,” Asia-Pacific Microwave Conf. (APMC), Singapore, pp. 293-296, Dec. 2009.
  • J. Lee, T.G. Khanh, K. Sakaguchi and K. Araki, “Power allocation for MIMO two-way relay network” Proc. IEEE Int. Conf. on Info., Commun. and Sig. Proc., (ICICS). 2009, pp. 1-5.
  • Y. Chang and K. Araki, “Robust design for multiuser block diagonalization MIMO downlink System with CSI feedback delay,” Proc. IEEE Personal, Indoor Mobile Radio Commun. (PIMRC ’09), G9-4, 13~16, Sept. 2009.
  • G. K. Tran, K. Sakaguchi, K. Araki, “Wireless mesh network performance: MIMO two-way relay vs. CSMA/CA based protocols,” Proc. IEEE Personal, Indoor Mobile Radio Commun. (PIMRC ’09), Sept. 13-16 2009.
  • G. K. Tran, K. Sakaguchi, K. Araki, “Network simulator implementation of 1D MIMO network coding and performance comparison with CSMA/CA,” Proc. IEEE Int. Conf. on Info., Commun. and Sig. Proc., (ICICS), Dec. 2009.
  • G. K. Tran, K. Sakaguchi, K. Araki, “An efficient retransmission scheme for MIMO two-way relay network employing network coding,” IEEE 71st VTC-Spring, May 2010.
  • N. Kusashima, I. Garcia, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “Fractional base station cooperation cellular network”, Proc. IEEE Int. Conf. on Info., Commun. and Sig. Proc., (ICICS), Dec. 2009.
  • K. Mizutani, T. Miyamoto, T. Kanno, K. Sakaguchi, K. Araki, “Hardware prototype for two-way multi-hop relay network with MIMO network coding,” Proc. IEEE Vehicular Technology Conference (VTC2010-Spring), Taipei, Taiwan, 16-19 May 2010.
  • K. Mizutani, K. Sakaguchi, K. Araki, “Network synchronization for two-way multi-hop relay networks with block modulation,” Proc. IEEE Vehicular Technology Conference (VTC2010-Spring), Taipei, Taiwan, 16-19 May 2010.
  • N. Lertwiram, K. T. Gia, K. Mizutani, K. Sakaguchi, K. Araki: “MIMO radio propagation measurement for two-hop relay network on L-shaped corridor with network performance analysis,” Proc. IEEE Vehicular Technology Conference (VTC2010-Spring), Taipei, Taiwan, 16-19 May 2010.
  • K. Sakaguchi, “The Protected Broadcast Channel,” Presented at IEEE Int. Conf. on Info., Commun. and Sig. Proc., (ICICS), Dec. 2009.
  • M. Arai, K. Sakaguchi, K. Araki, T. Sotoyama, “Theoretical analysis of base station cooperation MIMO channel by using eigenvalue theory of Wishart matrix,” IEEE Int. Symp. Antennas and Propagation, (ISAP), Toronto, Canada, July 2010

Domestic Conference

  • H. Shiozaki, T. Nasu, K. Araki, “Design and measurement of harmonic rejection direct sampling mixer,” IEICE Tech. Rep., vol. 109, no. 155, SR2009-26, pp. 25-30, July 2009.
  • R. Ramamonjison, J. Lee, K. Sakaguchi and K. Araki, “Optimal Node Placement and Power Allocation in MIMO Two-way Multihop Networks,” IEICE Tech. Rep., vol. 109, no. 440, RCS2009-285, pp. 155-160, March 2010.
  • N. Lertwiram, T.G. Khanh, K. Mizutani, K. Sakaguchi and K. Araki, “Propagation measurement of MIMO relay network in strong shadowing indoor environment at 5 GHz band,” IEICE Tech. Rep., vol. 109, no. 440, RCS2009-286, pp. 161-166, March 2010.
  • I. D. Garcia, K. Sakaguchi, K. Araki, “Partial protection coordinated beamforming for LTE-Advanced,” IEICE Tech. Rep., vol. 109, no. 440, RCS2009-278, pp. 119-124, March 2010.
  • N. Kusashima, I.Garcia, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “User scheduling in cellular system with base station cooperation”, IEICE Tech. Rep., vol. 109, no. 130, RCS2009-66, pp. 77-82, July 2009.
  • N. Kusashima, I.Garcia, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “User scheduling in Base station cooperation cellular network”, IEICE Society Conf., Sep. 2009.
  • N. Kusashima, I.Garcia, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “User combination selection method for base station cooperation multi-user MIMO”, IEICE General Conf., Mar. 2010.
  • N. Kusashima, I.D. Garcia, K. Sakaguchi, K. Araki, S. Kaneko, Y. Kishi, “Selection method for user combination in base station cooperation multi-user MIMO,” IEICE Tech. Rep., vol. 109, no. 440, RCS2009-290, pp. 185-190, March 2010.
  • K. Sakaguchi, N. Kusashima, M. Arai, K. Araki, “Channel capacity of basestation cooperation multi-user MIMO based on block diagonalization,” IEICE Tech. Rep., vol. 109, no. 305, RCS2009-142, pp. 55-60, Nov. 2009.
  • T. Le, Araki Kiyomichi, “Performance evaluation of 16QAM under PA nonlinear Distortions,” Proc. IEICE Gen. Conf., Sep. 2009.
  • Y. Zhang, K. Araki “A Distortion predicting method for nonlinear power amplifier with memory effects in OFDM systems,” Proc. IEICE Gen. Conf., Sep. 2009.
  • S. Tajima, N. Kusashima, S. Kaneko, Y. Kishi, K. Sakaguchi, K. Araki, “Deterioration of capacity due to propagation delay difference in base station cooperation,” IEICE Tech. Rep., vol. 109, no. 440, RCS2009-289, pp. 179-184, March 2010.
  • D. Q. Duy, K. Araki, “Analysis of channel characteristic in indoor environment,” Proc. IEICE Gen. Conf., Tohoku, Japan, Mar. 16-19, 2010.
  • M. Yoshida, K. Araki, “Single RF front-end MIMO transceiver with parasitic antenna elements,” Proc. IEICE Gen. Conf., Tohoku, Japan, Mar 16-19. 2010.
  • J. Lee, G. K. Tran, K. Sakaguchi, K. Araki, “Partially cooperative relay in MIMO two-way relay network,” Proc. IEICE Gen. Conf., B-5-57, Tohoku, Japan, Sept. 2009.
  • G. K. Tran, K. Umebayashi, F. Ono, T. Fujii, K. Sakaguchi, “Performance analysis of mesh network introducing 2D MIMO network coding,” IEICE Tech. Rep., vol. 109, no. 246, SR2009-67, pp. 105-111, Oct. 2009.
  • K. Umebayashi, T. Fujii, G. K. Tran, F. Ono, K. Sakaguchi, “A study on spectrum sharing by cognitive MIMO mesh network,” IEICE Tech. Rep., vol. 109, no. 246, SR2009-61, pp. 65-72, Oct. 2009.
  • K. Mizutani, K. Sakaguchi, K. Araki, “MIMO-OFDM two-way multihop network and network Synchronization scheme,” IEICE Tech. Rep., vol. 109, no. 61, SR2009-7, pp. 43-49, May 2009.
  • K. Mizutani, T. Miyamoto, T. Kanno, K. Sakaguchi, K. Araki, “Multi-channel two-way multi-hop relay network hardware prototype,” IEICE Tech. Rep., Vol. 109, No. 155, SR2009-32, pp. 61-67, July 2009.
  • K. Mizutani, T. Miyamoto, T. Kanno, K. Sakaguchi and K. Araki: “Hardware prototype for two-way multi-hop relay network with network coding,” IEICE Tech. Rep., Vol. 109, No. 246, SR2009-70, pp. 127-133, Oct. 2009.
  • M. Arai, K. Sakaguchi, K. Araki, T. Sotoyama, “Derivation of analytical eigenvalues for basestation cooperation MIMO channel,” IEICE Tech. Rep., vol. 109, no. 218, AP2009-115, pp. 73-78, Oct. 2009.
  • K. Sakaguchi, R. P. Wicaksono, K. Mizutani, K. G. Tran, “Wireless Grid to Realize Ubiquitous Networks with Wireless Power Supply,” IEICE Tech. Rep., vol. 109, no. 442, SR2009-113, pp. 149-154, Mar. 2010.


2008 Fiscal Year

Transactions and Letters

  • T. Shirai, K. Araki, “On Generalized Feistel Structures Using the Diffusion Switching Mechanism,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E91-A, No. 8, pp.2120-2129, Aug. 2008.
  • H.D. Trung, W. Benjapolakul, K. Araki, “Capacity Analysis of MIMO Rayleigh Channel with Spatial Fading Correlation,” IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences, Vol.E91-A, No.10, pp.2818-2826, Oct. 2008.
  • M. Iwabuchi, K. Sakaguchi, K. Araki, “Study on MultiChannel Receiver based on Polyphase Filter Bank,” IEICE Transactions on Communications (Japanese edition), Vol. J91-B, No. 11, pp. 1393-1400, Nov. 2008.
  • T. Nasu, K.Araki, “A Study on Design of Low Noise Direct Sampling Mixer,” IEICE Transactions on Electronics (Japanese Edition), Vol. J91-C, No.12, pp.719- 727, Dec. 2008.

International Conference

  • I.D. Garcia, K. Sakaguchi, K. Araki, “Cell Planning for Cooperative Transmission,” Wireless Commun. and Networking Conference., 2008. IEEE, pp. 1769 – 1774, Mar. 31, 2008-Apr. 3, 2008.
  • T. Fujii, K. Sakaguchi, “(Tutorials) Cognitive MIMO mesh networks for spectrum sharing,” in Proc. of The 3rd Inter. Conference. on Cognitive Radio Oriented Wireless Networks and Commun. (CrownCom2008), Singapore, May 2008.
  • A. T. Le, K. Araki, “A group of modulation schemes for adaptive modulation,” Communication Systems, 2008. ICCS 2008, 11th IEEE Singapore International Conference on, vol., no., pp.864-869, 19-21 Nov. 2008.
  • T. Nasu, K. Araki, “Effect of Timing Jitter in Direct Sampling Mixers,” Asia-Pacific Microwave Conference (APMC), Hong Kong & Macau, China, C4-08, Dec. 2008.
  • G. K. Tran, K. Sakaguchi, F. Ono, K. Araki, “Network capacity improvement with two dimensional MIMO network coding,” IEEE 2nd ICSPCS 2008, Dec. 15-17 2008.
  • M. Iwabuchi, K. Sakaguchi, K. Araki, “Study on Multi-Channel Receiver based on Polyphase Filter Bank,” IEEE 2nd ICSPCS 2008, Dec. 15-17 2008.
  • M. Kim, O. Miyagi, I. D. Garcia, K. Sakaguchi and K. Araki, “Effect of Ranging Error on Base Station Cooperation OFDM System,” International Symposium on Information Theory and its Application, Auckland, New Zealand, pp.160-165, Dec. 2008.
  • Yitao Zhang, Kiyomichi Araki, “A Novel Analysis of Predicting Nonlinear Distortions in Power Amplifier for a Complex Gaussian Process,” 2009 Korea-Japan Microwave Conference (KJMW2009), Korea, 2-3, Apr. 2009.
  • H. Shiozaki, K. Araki, “Polyphase Structure of Switched Capacitor Networks in Direct Sampling Mixer,” 2009 Korea-Japan Microwave Conference (KJMW2009), Korea, 2-3, Apr. 2009.
  • K. Aio, K. Araki, K. Sakaguchi, “A Design of PowerControllable Class-E Amplifier with Variable Capacitors,” 2009 Korea-Japan Microwave Conference (KJMW2009), Korea, 2-3, Apr. 2009.

Domestic Conference

  • K. Sakaguchi, “Study on Physical Layer for Cognitive Mesh Networks,” IEICE Technical. Report, vol. 108, no. 62, SR2008-16, pp. 99-104, May 2008.
  • K. Mizutani, G. K. Tran, K. Araki, K. Oishi, K. Kamada, S. Shimada, F. Ono and K. Sakaguchi, “Cognitive MIMO Mesh Relay Node at 950MHz Band “, IEICE Technical. Report, vol. 108, no. 172, SR2008-31, pp. 87- 94. Jul. 2008.
  • F. Ono, K. Sakaguchi, T. Sugiura, “Multi-stream Multiplexing for MIMO Mesh Network,” IEICE Technical. Report, vol. 108, no. 165, WBS2008-12, pp. 37-40, Jul. 2008.
  • M. Saito, H. Kamata, K. Sakaguchi, K. Araki “SelfIQ-imbalance Compensation Scheme without Reference Modulator nor Demodulator,” IEICE Technical. Report, vol. 108, no. 188, RCS2008-70, pp. 103-108, Aug. 2008.
  • A. T. Le, Araki Kiyomichi, “A Study on multilevel modulation considering nonlinear power amplifier characteristic,” IEICE Technical. Report, vol. 108, no. 188, RCS2008-69, pp. 97-102, Aug. 2008.
  • Y. Chang, K. Araki, “Unit Complex Vector Codebook Design for Limited Feedback 2 X 2 MIMO System,” the 2008 IEICE Society Conference, BS-1-4, Sep. 16~19, 2008.
  • Y. Zhang, K. Araki, “Nonlinear amplifier’s effects in MIMO Eigenmode transmission system,” IEICE Society Conference, B-5-77, Sep 2008.
  • T. Sugawara, T. Sotoyama, T. Fukagawa, I. D. Garcia, J. C. David, K. Sakaguchi, K. Araki, “Effect of Channel Estimation Error on Base-Station Cooperative Null,” IEICE Society Conference, B-17-15, Sep. 2008.
  • K. Mizutani, G. K. Tran, K. Araki, K. Oishi, K. Kamada, S. Shimada, F. Ono and K. Sakaguchi, “Development of Cognitive MIMO Mesh Relay Node “, IEICE Society Conference, B-17-22, Sep 2008.
  • D. Kurita, K. Li, K. Araki, “Two-Layered UWB Bandpass Filter Using Cross Coupling,” IEICE Society Conference, B-2-76, Sep 2008.
  • M. Yoshida, K. Sakaguchi, K. Araki, “Study on user scheduling with fairness and correlation among the users,” IEICE Technical. Report, vol. 108, no. 249, RCS2008-108, pp. 31-36, Oct 22-24. 2008.
  • T. Fujii, K. Sakaguchi, F. Ono, K. Umebayashi “High Speed High Reliability Synchronized Wireless Distributed Network based on Cognitive Concept,” IEICE Technical. Report, Vol. 108, no.250, SR2008-58, pp. 137-144, Oct 22-24. 2008.
  • F. Ono, K. Sakaguchi, “Performance Analysis of Multi-Stream Two-Way MIMO Multi-Hop Networks,” IEICE Technical. Report, vol. 108, no.251, AN2008-41, pp. 71-76, Oct 22-24. 2008.
  • K. Sakaguchi, “Heterogeneous Wireless Distibuted Networks,” IEICE Technical. Report, vol. 108, no.250, SR2008-61, pp. 159-164, Oct 22-24. 2008.
  • G. K. Tran, K. Sakaguchi, F. Ono, K. Araki, “2-D MIMO Network Coding and Cooperative Null Beamforming,” IEICE Technical Report, vol. 108, no. 250, SR2008-53, pp.105-112 Oct 2008.
  • I.D. Garcia, K. Sakaguchi, K. Araki, “Transmitter Optimization on Null Constrained Gaussian MIMO Broadcast Channels,” IEICE Technical Report, vol. 108, no. 250, SR2008-55, pp. 119-126, Oct. 2008.
  • K. Sakaguchi, “MIMO Relay Networks,” Microwave Workshops and Exhibition 2008 (MWE2008), workshop, Nov. 2008.
  • M. Ishii, K. Araki, “The Design of Low Distortion MOS Switches in Direct Sampling Mixers,” IEICE Technical Report, vol. 108, no. 350, MW2008-156, pp. 59- 64, Dec. 2008.
  • T. Ishida, K. Araki, “A Study of Gap-Coupled Microstrip Narrow-Bandpass Filter with Tapped Input/Output”, IEICE Technical Report, vol. 108, no. 350, MW2008-156, pp. 53-58, Dec. 2008.
  • Y. Morishita, Y. Shimizu, N. Saito, K. Araki, “A study of Reconfigurable Direct Sampling Mixer for Multimode Receiver,” IEICE Technical Report, vol. 108, no. 350, MW2008-159, pp. 77-82, Dec. 2008.
  • K. Mizutani, K. Sakaguchi and K. Araki, “Performance Comparison between Feedback and Feedback-less Method to Obtain CSI in Multi-user MIMO Precoding “, IEICE Technical. Report, vol. 107, no. 518, RCS2007-242, pp. 335-340. Mar 2008.
  • M. Yoshida, K. Sakaguchi, and K. Araki, “Probability density function of propagation channel using parasitic elements,” IEICE General Conference, B-1-224, Mar 17- 20. 2009.
  • M. Iwabuchi, K. Sakaguchi, K. Araki, “Matched Antenna Design based on Spherical Mode Expansion,” IEICE General Conference, B-1-220, Mar. 17-20 2009.
  • G. K. Tran, K. Sakaguchi, F. Ono, K. Araki, “Cooperative relay using distributed STBC in rotary typed MIMO network coding,” IEICE General Conference, B-5- 91, Mar 2009.
  • G. K. Tran, K. Sakaguchi, F. Ono, K. Araki, “Y-type MIMO network coding with cooperative null beamforming,” IEICE Technical Report, vol. 108, no. 445, RCS2008-257, pp. 267-272, Mar 2009.
  • M. Saito, H. Kamata, K. Sakaguchi, K. Araki “IQ imbalance compensation for RF MIMO fading simulator,” IEICE Technical Report, vol. 108, no. 446, SR2008-93, pp. 27-32, Mar. 2009.
  • M. Iwabuchi, K. Sakaguchi, K. Araki, “Matched Antenna Design based on Spherical Mode Expansion,” IEICE Technical. Report, vol. 108, no. 475, AP2008-215, pp. 23-27, Mar. 9-10 2009.
  • M. Yoshida, K. Sakaguchi, K. Araki, “Analysis of probability density function of propagation channel using parasitic elements,” IEICE Technical. Report, vol. 108, no. 475, AP2008-213, pp. 13-18, Mar 9-10. 2009.
  • I.D. Garcia, K. Sakaguchi, N. Kusashima, K. Araki, S. Kaneko, T. Inoue, “Cell Planning of Fractional Base Station Cooperation Network Based on MIMO Channel Model,” IEICE Technical. Report., vol. 108, no. 475, AP2008-233, pp. 107-112, Mar. 2009.
  • I.D. Garcia, K. Sakaguchi, N. Kusashima, K. Araki, “Cell Planning of Fractional Base Station Cooperation Network,” IEICE General Conference, BS-3-11, Mar. 2009.
  • J. Lee, G. K. Tran, K. Sakaguchi, K. Araki, “Power Allocation for Two-way MIMO relay network,” IEICE Technical. Report., vol. 108, no. 447, AN2008-68, pp. 23- 27, Mar. 2009.
  • K. Sakaguchi, “Distributed Cooperative Wireless Networks,” IEICE Technical. Report., vol. 108, no. 446, SR2008-107, pp. 121-126, Mar. 2009.
  • Y. Owatari, K. Mizutani, K. Sakaguchi and K. Araki, S. Shimada, “Design of carrier sense function based on FFT at 950MHz band,” IEICE Students’ Conference, B-17, Mar. 2009.
  • N. Kusashima, I.D. Garcia , S. Kaneko, T. Inoue, K. Sakaguchi, K. Araki, ‘’Fractional Base Station Cooperation Cellular Network’’, IEICE Technical Report, vol. 108, no. 445, RCS2008-226, pp. 83-88, Mar. 2009.
  • N. Kusashima, I.D. Garcia , S. Kaneko, T. Inoue, K. Sakaguchi, K. Araki, ‘’Fractional Base Station Cooperation Cellular Network’’, IEICE General Conference, B-1-241, Mar. 2009


2007 Fiscal Year

Transactions and Letters

  • Y. Morishita, K. Araki, Y. Hosokawa, N. Saito, T. Kurashina, A. Matsuzawa, “Design and Fabrication ofSerial Parallel Connection of Direct Sampling Mixer”, IEICE Transactions on Electronics, vol. J90-C, No.12, pp.903-912, Dec 2007.
  • K. Araki, “Microwave and Millimeter-Wave Circuits/Devices for Broadband Wireless Communications”, The Journal of the Institute of Electronics, Information, and Communication Engineers, Vol.90, No.4(20070401) pp. 254-258, April 2007.
  • J. Wang, K. Araki, Z. Zhang, Y. Chang, H. Zhu and T. Kashima, “A Low Complexity Tree-Structure Based User Scheduling Algorithm for Up-Link Multi-User MIMO Systems”, IEICE Transactions on Communications, Vol. E90-B, No. 6, pp. 1415-1423, June 2007.
  • T.O. Ohira, K. Araki, “Active Q-Factor and Equilibrium Stability Formulation for Sinusoidal Oscillators”, IEEE Transactions on Circuits and Systems II: Express Briefs, Vol. 54, Issue: 9, pp. 810-814, Sept. 2007.
  • H. Imai and K. Araki, “Wideband Nonlinear Modeling of Power Amplifier and the Application,” IEICE Transactions on Electronics, Volume J90-C No.12, pp. 882-893, Dec 2007.
  • Y. Nakagawa, K. Sakaguchi, H. Kawamura, K. Ohashi, M. Muraguchi and K. Araki, “Multi-Channel Multi-Stage Transmultiplexing Digital Down Converter and Its Application to RFID (ISO18000-3 mode 2) Reader/Writer”, IEICE Transactions on Communications, Vol E91-B, No 1, pp. 139-146, Jan 2008.
  • F. Ono and K. Sakaguchi, “MIMO Spatial Spectrum Sharing for High Efficiency Mesh Network”, IEICE Transactions on Communications, Vol. E91-B, No. 1, pp. 62-69 Jan 2008.
  • J. Sumethnapis, K. Araki, “Pulse-Position Multi-Pulse Modulation for High Data Rate Multiple Access in TRUWB Systems”, IEEJ Transactions on Electronics, Information and Systems., vol.128-C, No. 2, pp. 231-241, Feb 2008.

International Conference

  • Y. Nakagawa, M. Muraguchi, H. Kawamura, K. Ohashi, K. Sakaguchi, K. Araki, “Novel multi-stage transmultiplexing digital down converter for implementation of RFID (ISO18000-3 mode 2) reader/writer,” IEEE VTC2007-Spring, Dublin, Ireland, Apr. 2007
  • K. Sakaguchi, F. Ono, “Multiple access interference cancellation and link multiplexing for MIMO mesh network,” IEEE Inter. Conference. Comp. Commun. Networks. Hawaii, USA, Aug. 2007
  • F. Ono, K. Sakaguchi, “Multiple access interference cancellation and link multiplexing for MIMO mesh network,” IEEE Inter. Symposium on Personal, Indoor and Mobile Radio Commun. (PIMRC’07), Sep. 2007
  • M. Noda, M. Muraguchi, G. K. Tran, K. Sakaguchi, K. Araki, “Eigenmode Tomlinson-Harashima Precoding for Multi-antenna Multi-user MIMO Broadcast Channel,” Sixth International Conference on Information, Communications and Signal Processing, Nov. 2007
  • T. Nasu, K. Araki, “Noise Analysis of Switched Capacitor Networks in Direct Sampling Mixers,” KoreaJapan Microwave conference, TH03-4., Korea-Japan Microwave conference Technical Digest 2007, pp. 61-64, Nov. 2007
  • M. Ishii, and K. Araki, “Analysis of Nonlinear Distortion in Direct Sampling Mixers,” TH03-3, KoreaJapan Microwave conference Technical Digest 2007, pp. 61-64, Nov. 2007
  • I.D. Garcia, K. Sakaguchi, K. Araki, “Cell Planning for Cooperative Transmission,” Accepted, IEEE Wireless Commun. and Networking Conf., Nevada, USA, Mar 30- April 3, 2008.
  • F. Ono, K. Sakaguchi, “Bi-directional link multiplexing for MIMO mesh network,” IEEE Inter. Conf. on Infor., Commun. & Signal Process., Dec. 2007

Domestic Conference

  • Y. Nakagawa, I. Garcia, K. Kato, S. Suyama , K. Sakaguchi, K. Araki, H. Suzuki, T. Yamaguchi, K. Kaiga, S. Arata, “Evaluation of MIMO fading simulator for cellular system,” IEICE technical report, Vol.107, No. 162(20070719) pp. 55-61, Jul 2007
  • M. Noda, G. K. Tran, K. Leng, K. Mizutani, K. Sakaguchi, K. Araki, “Setup of Propagation Measurement for MIMO Relay and Measurement Results,” Technical Report, SR2007-28, pp.55-60, 2007.
  • M. Noda, G. K. Tran, K. Sakaguchi, K. Araki, “Eigenmode Tomlinson-Harashima Precoding in Multiuser MIMO Broadcast Channel,” Society Conf., B-5-41, Sept. 2007.
  • K. Mizutani, M. Noda, G. K. Tran, K. Leng, K. Sakaguchi, K. Araki, “Evaluation Experiment of Capacity Increase of MIMO Relay in L-shaped Indoor Propagation Environment,” Society Conf., B-1-4, Sept. 2007.
  • M. Iwabuchi, K. Sakaguchi and K. Araki, “Polyphase Multi-Channel Digital Down Converter,” IEICE SR Conference, SR2007-83, Nagano, Japan, Jan. 5-7, 2008.
  • Kei Sakaguchi, “Distributed MIMO network, “IEICE Tokyo chapter symposium, Feb. 2008.
  • T. Nasu, K. Araki, “A study on Design of Low Noise Direct Sampling Mixer,” Technical Committee on Microwave Engineering, Feb. 2008, submitted.
  • M. Ishii and K. Araki, “Modeling and Analysis of Direct Sampling Mixers including Parasitic Elements,“ IEICE Technical Report, no. 504, MW2007-179, pp. 55-59, Feb. 2008.
  • H. Shiozaki and K. Araki, “Analysis of Direct Sampling Mixer as a Multirate System ,” IEICE Technical Report, no. 504, MW2007-180, pp. 61-65, Feb. 2008.
  • O. Miyagi, K. Sakaguchi and K. Araki, “Ranging for BaseStation Cooperation,” IEICE General Conference, B-98, March 2008.
  • K. Mizutani, K. Sakaguchi and K. Araki, “Performance Comparison between Feedback and Feedback-less Method to Obtain CSI in Multi-user MIMO Precoding ,” IEICE Technical Report, vol. 107, no. 518, RCS2007-242, pp. 335-340, IEICE RCS Conference, Kanagawa, Japan, Mar 5-7, 2008.
  • I.D. Garcia, D. Chanin, K. Sakaguchi, K. Araki, T. Sugawara, T. Sotoyama, T. Fukugawa, “Base Station Cooperation Null-Beamforming for Spatial Spectrum Sharing Between Next Generation Cellular and Fixed Satellite Systems,” IEICE SR Conference, Kanagawa, Japan, Mar 5-7, 2008.
  • I.D. Garcia, D. Chanin, K. Sakaguchi, K. Araki, T. Sugawara, T. Sotoyama, T. Fukugawa, “Base Station Cooperation Null-Beamforming for Spatial Spectrum Sharing Between Next Generation Cellular and Fixed Satellite Systems,” Accepted, IEICE General Conference, Kyushu, Japan, Mar 18-21, 2008.
  • M. Iwabuchi, K. Sakaguchi and K. Araki, “Study on Multi-Channel Receiver based on Polyphase Filter Bank,” Accepted, IEICE General Conference, B-17-4, Kitakyushu, Japan, Mar 18-21, 2008.
  • M. Kim, K. Sakaguchi, K. Araki, “Performance comparision of MIMO schemes in cellular environment,” IEICE General Conference, B-5-80, IEICE General Conference, Kyushu, Japan, Mar 18-21, 2008
  • M. Yoshida and K. Araki, “Capacity Improvement in Cell-edge with Base Station Cooperation,” IEICE General Conference, Kyushu, Japan, Mar 18-21, 2008.
  • Kei Sakaguchi, “MIMO communication systems,” IEICE Tokai chapter technical lecture, Mar. 2008.
  • F. Ono, K. Sakaguchi, “MIMO network coding for high-efficiency wireless multi-hop network”, IEICE Tech. Report, WBS2007-117, Mar. 2008.
  • Kei Sakaguchi, “Base Station Cooperation MIMO for Spatial Spectrum Sharing,” IEICE Tech. Report, SR2007-103, Mar. 2008.


2006 Fiscal Year

Transactions

  • J. Wang, K. Araki,”Two Complexity Reduced Receiver Structures for Multi-User MIMO OFDMA Systems”, IEICE Transactions on Communications, vol. 89-B, No. 8, pp 2254-2256, August 2006.
  • J. Wang, K. Araki, Z. Zhang, C. Chang, H. Shu, T. Kashima,”A Low Complexity User Scheduling Algorithm for Up-Link multi-user MIMO Systems”, IEICE Communication, to be published, July 2007.
  • J. Wang, Y. Chang, K. Araki, Z. Zhang, “Performance Analysis of the Extended Low Complexity User Scheduling Algorithm for Up-Link Multi-user MIMO OFDMA systems,” IEICE Communication, Accepted.
  • J. Sumethnapis, K. Araki, “Multiple Access in TRUWB System Using Differential Multi-Pulse Modulation,”, IEICE Transactions on Communications., vol.89-B, No. .4, pp. 1305- 1314, April 2006
  • K. Mizutani, K. Sakaguchi, J. Takada, and K. Araki, “Development of MIMO-SDR platform and its application to real-time channel measurements,” IEICE Transactions on Communications, vol.E89-B, no.12, pp.3197-3207, December 2006.
  • S. H. Ting, K. Sakaguchi and K. Araki, “A MarkovKronecker model foranalysis of closed-loop MIMO systems,” IEEE Communication Letters, vol.10, no.8, pp.617-619, August 2006.
  • S. H. Ting, K Sakaguchi and K. Araki, “A robust and low complexity adaptive algorithm for MIMO eigenmode transmission system with experimental validation,” IEEE Trans. Wireless Communication,, vol. 5, no. 7, pp. 1775– 1784, July 2006.

International Conference

  • J. Sumethnapis, K. Araki, “Multiple Access Performance of TR-UWB system Using a Combined PPM and Differential Multi-Pulse,”, IEEE VTC2006-spring, May 2006
  • K. Mizutani, K. Sakaguchi, J. Takada, and K. Araki, “Measurement of time-varying MIMO channelfor performance analysis of closed-loop transmission,”IEEE VTC2006-spring, May 2006.
  • G. K. Tran, N. D. Dao, K. Sakaguchi, K. Araki, H. Iwai, T. Sakata, and K. Ogawa, “Performance Analysis of MIMO-OFDM Systems using Indoor Wideband MIMO Channel Measurement Data,” IEEE VTC2006-spring, May 2006.
  • Y. Morishita, K. Araki, Y. Hosokawa, K Abe and N. Saito, “Serial-Parallel Connection of Direct Sampling Mixer,” Asia-Pacific Microwave Conference, vol. 3, FR4A-4, Dec. 2006.
  • T. N. B. Pham, H. Murata, S. Yoshida and K. Araki, “ Area spectral efficiency of wireless multihop networks in Rayleigh fading channel and the impact of terminal density,” First International Conference on Communications and Electronics, Hanoi, Vietnam, Oct. 2006.
  • R. Yamashita, H. Murata, S. Yoshida and K. Araki, “`Equalization techniques for multihop cooperative wireless networks with asynchronous relaying,’” International Symposium on Information Theory and its Applications (ISITA 2006), Wed2-4-1, pp.903-908, COEX, Seoul, Korea, Nov. 2006.
  • T. N. B. Pham, H. Murata, S. Yoshida and K. Araki, “Adaptive modulation schemes for multihop cooperative wireless networks,” International Symposium on Information Theory and its Applications (ISITA 2006), Wed2-4-2, pp.909-912, COEX, Seoul, Korea, Nov. 2006.

Domestic Conference

  • Y. Kakishima, H. D. Le, S. H. Ting, K. Sakaguchi, and K. Araki, “Experimental analysis of MIMO-OFDM eigenmode transmission with MMSE interference canceller,” Proc. IEEE PIMRC 2006, Helsinki, Finland, Sep. 2006.
  • D. N. Dung, K. Sakaguchi, S. Suyama, R. Nagareda, J. Takada, H. Suzuki, K. Araki, S. Arata, K. Kaiga, S. Manabe, T. Yamaguchi, and K. Miwa, “Implementation and Evaluation of 4 × 4 MIMO Fading Simulator Considering Antenna Characteristics”, HUT-ICCE 2006, October 2006.
  • J. Wang, K. Araki, Z. Zhang, Y. Chang, H. Zhu and T. Kashima, “A Low Complexity Tree-Based User Scheduling Algorithm in Up-Link MIMO Systems,” IEICE Technique Report, 2006-119, pp.85-90.
  • Y. Chang, J. Wang, H. Zhu, T. Kashima, K. Araki,”Integrated User Scheduling Algorithm for MultiUser MIMO Downlink Systems”, IEICE General Conference, Japan, March, 2007
  • T. Terao and K. Araki, “Phase Noise Analysis of AllDigital PLL with VHDL Simulation,” IEICE General Conference, C-2-12, Nagoya, March 2007.
  • M. J. Kim, Y. Kakishima，K. Sakaguchi，F. Ono，and K. Araki，“Development of Experimental Prototype Hardware for IEEE 802.16e based 4:4 MIMO System”，IEICE General Conference，B-5-43，Tokyo， March 2006．
  • Y. Morishita, K. Araki, Y. Hosokawa, K. Abe, and N. Saito“Design of Serial Parallel Connection of Direct Sampling Mixer,” IEICE Technical Report, SR2006-24, July 2006.
  • Y. Morishita, K. Araki, Y. Hosokawa, K. Abe, and N. Saito“Equal Ripple Filter Design using Parallel Connection of Direct Sampling Mixer,” IEICE Technical Report, MW2006-82, Sept. 2006.
  • Y. Morishita, K. Araki, Y. Hosokawa, K. Abe, and N. Saito“Design of Parallel Connection of Direct Sampling Mixer with Single Front-end Amplifier,” IEICE Society Conference, C-2-30, Sept. 2006.
  • Y. Kakishima, M. Kim, F. Ono, K. Sakaguchi, and K. Araki, “Implementation of MIMO-OFDM eigenmode transmission system for IEEE802.11n/16e,” IEICE Technical Report, SR2006-20, June 2006.
  • Y. Kakishima, T. G. Khanh, K. Sakaguchi, and K. Araki, “Experimental analysis on MIMO-OFDM eigenmode transmission with MMSE interference canceller,” IEICE Society Conference, B-5-19, Kanazawa, Sep. 2006.
  • H. Imai and K. Araki, “Measurement and modeling of power amplifier with memory effect,” IEICE Society Conference, C-2-13, Tokyo, Sept. 2006.
  • H. Imai and K. Araki, “Measurement and modeling of power amplifier with memory effect by using modulation analyzer,” IEICE Technical Report, MW2006-81, Sept. 2006.
  • D. N. Dung, T. G. Khanh, K. Sakaguchi, and K. Araki, “Evaluation of Multi-User MIMO System Throughput using MIMO Propagation Measurement Data”, IEICE Society Conference, B-1-225, Kanazawa, Sep. 2006.
  • D. N. Dung, K. Sakaguchi, S. Suyama, R. Nagareda, J. Takada, H. Suzuki, K. Araki, S. Arata, K. Kaiga, S. Manabe, T. Yamaguchi, and K. Miwa,”Implementation and evaluation of 4 × 4 MIMO fading simulator considering antenna characteristics”, IEICE Technical Report, July 2006.
  • D. N. Dung, T. G. Khanh, K. Sakaguchi, and K. Araki, “Performance Evaluation of MIMO Relay Network based on MIMO Relay Channel model,” IEICE Society Conference, B-21-14, Nagoya, Mar. 2007.
  • T. N. B. Pham, H. Murata and K. Araki, “Area spectral efficiency of multihop networks with adaptive modulation, ” IEICE Society Conference, B-5-81, p. 441, Kanazawa, Sept. 2006.
  • R. Yamashita, H. Murata, and K. Araki, “Performance improvement of multihop cooperative wireless networks by adjusting locations of relay stations, ” IEICE Society Conference, B-5-120, p. 480, Kanazawa, Sept. 2006.
  • R. Fusawa, H. Murata, and K. Araki, “Theoretical FER performance of multihop wireless cooperative networks using transmit diversity, ” IEICE Society Conference, B-5-121, p. 481, Kanazawa, Sept. 2006.
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