Details of the Researcher

PHOTO

Hiroaki Hashida
Section
Frontier Research Institute for Interdisciplinary Sciences
Job title
Assistant Professor
Degree

  • Ph. D. (Tohoku University)

Research History 4

  • 2024/07 - Present
    Tohoku University　Prominent Research Fellow

  • 2024/04 - Present
    Tohoku University　Graduate School of Information Sciences　Assistant Professor

  • 2024/04 - Present
    Tohoku University　Frontier Research Institute for Interdisciplinary Sciences Creative Interdisciplinary Research Division

  • 2021/04 - 2024/03
    Japan Society for the Promotion of Science

Education 4

  • Tohoku University　Graduate School of Information Sciences　Department of Applied Information Sciences

    2021/04 - 2024/03

  • Tohoku University　Graduate School of Information Sciences　Department of Applied Information Sciences

    2019/04 - 2021/03

  • Tohoku University　Faculty of Engineering　Department of Electrical, Information and Physics Engineering

    2015/04 - 2019/03

  • 宮城県仙台第二高等学校

    2012/04 - 2015/03

Committee Memberships 10

  • IEEE Transactions on Network Science and Engineering　Associate Editor

    2026/04 - Present

  • IEEE Sendai Young Professionals Affinity Group　Chair

    2026/01 - Present

  • 東京都　OpenRoaming対応Wi-Fi環境整備に係る伴走型技術支援及びガイドライン等作成の業務委託に係る技術審査委員会 委員

    2025/12 - Present

  • IEEE Internet of things Journal　Associate Editor

    2024/10 - Present

  • IEEE Sendai Young Professionals Affinity Group　Vice-Chair

    2022/01 - 2025/12

  • 東京都　令和7年度島しょ地域における衛星通信を活用したOpenRoaming対応Wi-Fi設置運用業務委託 技術審査委員会 委員

    2025/05 - 2025/09

  • 東京都　OpenRoaming対応公衆Wi-Fi環境の構築及び運用業務委託（東京ビッグサイト）に係る技術審査委員会 委員

    2025/05 - 2025/09

  • IEEE Sendai Young Professionals Affinity Group　Treasurer

    2021/01 - 2021/12

  • IEEE Transactions on Vehicular Technology　System Administrator

    2020 - 2021/12

  • IEEE Tohoku University Student Branch　Chair

    2019/01 - 2020/12

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Professional Memberships 2

  • IEICE

    2019/07 - Present

  • IEEE

    2018/07 - Present

Research Interests 3

  • Intelligent Reflecting Surface

  • Wireless Communications

  • 動的電波伝搬制御

Research Areas 1

  • Informatics / Information networks /

Awards 14

  1. Ikushi Prize

    2024/03　Japan Society for the Promotion of Science

  2. Telecom System Technology Student Award

    2023/03

  3. RIEC Award 東北大学学生賞

    2023/02

  4. 丹羽保次郎記念論文賞

    2023/02　東京電機大学学術振興基金

  5. President's Award

    2021/03　Tohoku University

  6. 電子情報通信学会学術奨励賞

    2025/03　近傍/遠方界におけるIntelligent Reflecting Surfaceの反射特性

  7. Best Paper Award

    2025/02　2025 International Conference on Computing, Networking and Communications　Frequency Prism-based Beamforming and Resource Allocation in LEO Satellite Networks with Delay Adjustable IRS

  8. IEEE Best Paper Award

    2024/12　IEEE International Conference on Scalable Computing and Communications 2024　Optimization of Intelligent Reflecting Surface Dimensions Under Partial Blockages

  9. 総長優秀学生賞

    2024/04　東北大学

  10. A3 Foresight Program 2022 Workshop Best Presentation Award

    2022/12

  11. TOWERS Best Presentation Award

    2022/10　IEEE Kansai Section Young Professional Affinity Group

  12. 無線通信システム研究会活動奨励賞（奨励賞）

    2021/05　電子情報通信学会

  13. GSIS Dean's Award

    2021/03　Tohoku University

  14. Student Excellent Research Award 2019

    2020/01　IEEE ComSoc Sendai Chapter

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Papers 17

  1. Joint Optimization of Data Placement and Task Scheduling for Distributed Green Data Centers With Optical Satellite Networks Peer-reviewed

    Hiroto Oshima, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Kazushi Sugyo, Yohei Hasegawa, Masayuki Ariyoshi

    IEEE Transactions on Network Science and Engineering　2026

    DOI： 10.1109/TNSE.2026.3672902 　

  2. Precoding-free Hierarchical Rate-Splitting Multiple Access via Stacked Intelligent Metasurface Peer-reviewed

    Hiroaki Hashida, Boya Di

    IEEE Internet of Things Journal　2026

    DOI： 10.1109/JIOT.2026.3658960 　

  3. Efficient Cross-Orbital Link Construction for Low-Delay Communication in LEO Satellite Networks Peer-reviewed

    Wataru Kato, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Masayuki Ariyoshi

    IEEE Transactions on Vehicular Technology　2026

    DOI： 10.1109/TVT.2026.3653802 　

  4. Angle–Distance Separated Hierarchical Beam Training With Multi-Focal and Defocal Beams for Large-Scale IRS-Aided Near-Field Communication Peer-reviewed

    Ryuhei Hibi, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Transactions on Cognitive Communications and Networking　2026

    DOI： 10.1109/TCCN.2025.3620289 　

  5. Fluid Antenna Systems Enabled by Reconfigurable Holographic Surfaces: Beamforming Design and Experimental Validation Peer-reviewed

    Shupei Zhang, Yuze Zhang, Hiroaki Hashida, Yonina C. Eldar, Marco Di Renzo, Boya Di

    IEEE Journal on Selected Areas in Communications　2026

    DOI： 10.1109/JSAC.2025.3618797 　

  6. Spectral-Efficient Dynamic User Association in LEO Satellite Constellation-HAPS Cooperative Networks Peer-reviewed

    Kazuma Mashiko, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Kohei Yoshida, Masayuki Ariyoshi

    IEEE Transactions on Cognitive Communications and Networking　2026

    DOI： 10.1109/TCCN.2025.3569603 　

  7. Mathematical Modeling and Deployment Optimization: Intelligent Reflecting Surface-Aided Communications Under Partial Blockages Peer-reviewed

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Transactions on Cognitive Communications and Networking　2025/10

    DOI： 10.1109/TCCN.2025.3534142 　

  8. Sharing Intelligent Reflecting Surfaces in Multi-Operator Communication Systems for Sustainable 6G Networks Peer-reviewed

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Wireless Communications　2025/09

    DOI： 10.1109/MWC.2025.3599988 　

  9. Environment-Aware Beam Selection for Efficient Codebook Design in IRS-Assisted Communications

    Yugo Tanabu, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Takumi Yoneda, Tomoki Murakami

    ICC 2025 - IEEE International Conference on Communications　5821-5826　2025/06/08

    Publisher: IEEE

    DOI： 10.1109/icc52391.2025.11161900 　

  10. Deep Q-Learning-Driven Frequency Prism Beamforming With Delay-Adjustable IRS in LEO Satellite Networks Peer-reviewed

    Shuta Sekimori, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Kohei Yoshida, Masayuki Ariyoshi

    IEEE Transactions on Cognitive Communications and Networking　2025

    DOI： 10.1109/TCCN.2025.3567094 　

  11. IRS-Aided Near-Field Communication: Prospects and Challenges with Codebook Approach Peer-reviewed

    Ryuhei Hibi, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Wireless Communications　1-6　2025

    Publisher: Institute of Electrical and Electronics Engineers (IEEE)

    DOI： 10.1109/mwc.010.2400251 　

    ISSN： 1536-1284

    eISSN： 1558-0687

  12. Machine Learning-Based Infrastructure Sharing and Shared Operations for Intelligent Reflecting Surface-Aided Communications Peer-reviewed

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Transactions on Cognitive Communications and Networking　10　(1)　198-208　2024/02

    Publisher: Institute of Electrical and Electronics Engineers (IEEE)

    DOI： 10.1109/tccn.2023.3312386 　

    eISSN： 2332-7731 2372-2045

  13. Selective Reflection Control: Distributed IRS-Aided Communication With Partial Channel State Information Peer-reviewed

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Transactions on Vehicular Technology　71　(11)　11949-11958　2022/11

    Publisher: Institute of Electrical and Electronics Engineers (IEEE)

    DOI： 10.1109/TVT.2022.3194352 　

    ISSN： 0018-9545

    eISSN： 1939-9359

  14. Adaptive Pilot Interval Optimization for Intelligent Reflecting Surface-Aided Communication Systems Peer-reviewed

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Transactions on Vehicular Technology　71　(7)　7963-7966　2022/07

    Publisher: Institute of Electrical and Electronics Engineers ({IEEE})

    DOI： 10.1109/TVT.2022.3166639 　

    ISSN： 0018-9545 1939-9359

    eISSN： 1939-9359

  15. Mobility-Aware User Association Strategy for IRS-Aided mm-Wave Multibeam Transmission Towards 6G Peer-reviewed

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Masashi Iwabuchi, Tomoki Murakami

    IEEE Journal on Selected Areas in Communications　40　(5)　1667-1678　2022/05

    Publisher: Institute of Electrical and Electronics Engineers ({IEEE})

    DOI： 10.1109/JSAC.2022.3143216 　

    ISSN： 0733-8716 1558-0008

    eISSN： 1558-0008

  16. Intelligent Reflecting Surface Placement Optimization in Air-Ground Communication Networks Toward 6G Peer-reviewed

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Wireless Communications　27　(6)　146-151　2020/12

    Publisher: Institute of Electrical and Electronics Engineers (IEEE)

    DOI： 10.1109/mwc.001.2000142 　

    ISSN： 1536-1284

    eISSN： 1558-0687

  17. Efficient Delay-Based Internet-Wide Scanning Method for IoT Devices in Wireless LAN Peer-reviewed

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEEE Internet of Things Journal　7　(2)　1364-1374　2020/02

    Publisher: Institute of Electrical and Electronics Engineers ({IEEE})

    DOI： 10.1109/JIOT.2019.2954539 　

    eISSN： 2327-4662

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Misc. 4

  1. Experiments and Evaluation of Beamsquint Occurrence on Intelligent Reflecting Surface at 28 GHz

    桑原颯汰, 庄子瑠, 矢田目和弥, 橋田紘明, 橋田紘明, 川本雄一, 加藤寧, 米田拓海, 村上友規

    電子情報通信学会技術研究報告(Web)　124　(364(IT2024 26-72))　2025

    ISSN： 2432-6380

  2. Partitioning Control Experiments of Intelligent Reflecting Surface at 28GHz

    竹村都, 上川名琉人, 長野史門, 橋田紘明, 橋田紘明, 川本雄一, 加藤寧, 米田拓海, 村上友規

    電子情報通信学会技術研究報告(Web)　124　(364(IT2024 26-72))　2025

    ISSN： 2432-6380

  3. A Study on Optimal Control of Shared Intelligent Reflecting Surface Considering Frequency Response among Multiple Communication Systems

    竹村都, 橋田紘明, 橋田紘明, 川本雄一, 加藤寧, 米田拓海, 村上友規

    電子情報通信学会技術研究報告(Web)　125　(32(RCS2025 16-30))　2025

    ISSN： 2432-6380

  4. Beam Squint-aware Frequency Resource Allocation for IRS-aided Communication International-journal

    Hiroaki Hashida, Ei Tanaka, Yuichi Kawamoto, Masashi Iwabuchi, Riku Omiya, Yoghitha Ramamoorthi, Tomoki Murakami

    Beyond 5G White Paper Supplementary Volume “Relay and Reflector Technologies”　42-46　2024/03

Books and Other Publications 1

  1. 先端デバイス・マテリアル トレンドレポート vol. 1

    江南 俊夫, 野本 博之, 橋田 紘明, 日比 龍平, 川本 雄一, 加藤 寧, 阿野 進

    AndTech　2023/06

    ISBN: 9784909118592

Presentations 60

  1. Optimization of Intelligent Reflecting Surface Dimensions Under Partial Blockages International-presentation

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    The 24th IEEE International Conference on Scalable Computing and Communications (ScalCom 2024)　2024/12/04

  2. [Invited Talk] Shared Operation of Intelligent Reflecting Surface among Mobile Network Operators International-presentation Invited

    Hiroaki Hashida

    The 7th International Workshop on Smart Wireless Communications (SmartCom 2024)　2024/11/05

  3. Sharing Intelligent Reflecting Surface Among Multiple Wireless Communication Systems International-presentation

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2023 IEEE Global Communications Conference (GLOBECOM 2023)　2023/12/04

  4. IRS-aided Communications Without Channel State Information Relying on Deep Reinforcement Learning International-presentation

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Masashi Iwabuchi, Tomoki Murakami

    2022 IEEE Global Communications Conference (GLOBECOM 2022)　2022/12

  5. 二段階ビーム走査によるIntelligent Reflecting Surfaceの入射角ずれ及び反射角ずれの推定に関する実験的評価

    上野敬太, 久保田奈緒, 齋藤真毅, 上川名琉人, 日比龍平, 橋田紘明, 川本雄一, 加藤寧, 大戸琢也, 林高弘, 沖田光隆

    電子情報通信学会技術研究報告　2025/11

  6. Intelligent Reflecting Surfaceの周波数特性に関する実験的評価

    石川万里子, 田中優太郎, 千葉崚平, 竹村都, 日比龍平, 橋田紘明, 川本雄一, 加藤寧, 米田拓海, 村上友規

    電子情報通信学会技術研究報告　2025/11

  7. Multi-AP連携環境下のMulti-Link Operationにおけるリンク別AP選択手法に関する研究

    庄子瑠, 橋田紘明, 川本雄一, 加藤寧, 本塚裕幸, 浦部嘉夫

    電子情報通信学会技術研究報告　2025/11

  8. Multi-AP連携における通信性能向上のための協調参加AP最適選択の提案

    桑原颯汰, 橋田紘明, 川本雄一, 加藤寧, 本塚裕幸, 浦部嘉夫

    電子情報通信学会技術研究報告　2025/11

  9. 衛星搭載MECを用いたリアルタイム通信のための低遅延化に関する検討

    長野史門, 橋田紘明, 川本雄一, 加藤寧, 森川まり花, 金子和真, 谷重紀

    第69回宇宙科学技術連合講演会　2025/11

  10. 光通信衛星コンステレーションにおける地上-衛星間ダイバーシティ技術を利用した経路制御方式

    矢田目和弥, 橋田紘明, 川本雄一, 加藤寧, 須堯一志, 長谷川洋平, 有吉正行

    第69回宇宙科学技術連合講演会　2025/11

  11. Reducing Latency Through Satellite-to-Ground Link Selection Considering Site and Satellite Diversity in LEO Constellation Systems, International-presentation

    Kazuya Yatame, Hiroaki Hashida, Yuichi Kawamoto, Kazushi Sugyo, Yohei Hasegawa, Masayuki Ariyoshi

    30th Ka and Broadband Communications Conference,　2025/10

  12. Distributed Control Architecture for Software-defined Satellite-Terrestrial Integrated Networks International-presentation

    Kazuma Mashiko, Hiroaki Hashida, Yuichi Kawamoto, Yohei Hasegawa, Masayuki Ariyoshi

    30th Ka and Broadband Communications Conference　2025/10

  13. Task Offloading Optimization for Low-Latency Edge Computing via Lunar-Orbit Satellites International-presentation

    Shimon Nagano, Hiroaki Hashida, Yuichi Kawamoto, Marika Morikawa, Kazuma Kaneko, Shigenori Tani

    30th Ka and Broadband Communications Conference　2025/10

  14. 月近傍衛星を用いたエッジコンピューティングにおける低遅延化のためのタスク割当に関する研究

    長野史門, 橋田紘明, 川本雄一, 加藤寧, 森川まり花, 金子和真, 谷重紀

    電子情報通信学会技術研究報告　2025/07

  15. Prediction-based Task Allocation and Processor Control for Distributed Green Data Centers with Optical Satellite Links International-presentation

    Hiroto Oshima, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Kazushi Sugyo, Yohei Hasegawa, Masayuki Ariyoshi

    The 2025 IEEE 101th Vehicular Technology Conference (VTC2025-Spring)　2025/06

  16. Bundle Transmission Control in Multi-Source Delay/Disruption Tolerant Near-Earth Satellite Networks for Improved Delivery Ratio International-presentation

    Kazuma Mashiko, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Yohei Hasegawa, Masayuki Ariyoshi

    The 2025 IEEE 101th Vehicular Technology Conference (VTC2025-Spring)　2025/06

  17. Max-Min Fairness in Intelligent Reflecting Surface-aided Multi-Operator Networks with Cooperative Passive Beamforming International-presentation

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    The 2025 IEEE 101th Vehicular Technology Conference (VTC2025-Spring)　2025/06

  18. Environment-aware Beam Selection for Efficient Codebook Design in IRS-assisted Communications International-presentation

    Yugo Tanabu, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Takumi Yoneda, Tomoki Murakami

    IEEE International Conference on Communications (ICC 2025)　2025/06

  19. 二段階のビーム走査によるIntelligent Reflecting Surfaceの入射角誤差及び設置角誤差の推定に関する研究

    上川名琉人, 橋田紘明, 川本雄一, 加藤寧, 大戸琢也, 青木宏樹, 林高弘

    電子情報通信学会技術研究報告, vol.125, no.32, RCS2025-17, pp.7-12　2025/05

  20. 周波数特性を考慮したIntelligent Reflecting Surfaceの複数システム間共用のための最適化制御に関する研究

    竹村都, 橋田紘明, 川本雄一, 加藤寧, 米田拓海, 村上友規

    電子情報通信学会技術研究報告, vol. 125, no. 32, RCS2025-16, pp. 1-6　2025/05

  21. 光衛星通信を用いた分散型グリーンデータセンタシステムにおける予測に基づいたタスク割当とプロセッサ制御に関する検討

    大島宙斗, 橋田絋明, 川本雄一, 加藤寧, 須堯一志, 長谷川洋平, 有吉正行

    電子情報通信学会技術研究報告, vol. 125, no. 12, SAT2025-6, pp. 28-33　2025/04

  22. DTNに基づく地球近傍衛星ネットワークにおけるバンドル集約と転送順序制御に関する検討

    益子和真, 橋田紘明, 川本雄一, 加藤寧, 長谷川洋平, 有吉正行

    電子情報通信学会技術研究報告, vol. 125, no. 12, SAT2025-5, pp. 22-27　2025/04

  23. Frequency Prism-based Beamforming and Resource Allocation in LEO Satellite Networks with Delay Adjustable IRS International-presentation

    Shuta Sekimori, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Kohei Yoshida, Masayuki Ariyoshi

    International Conference on Computing, Networking and Communications　2025/02

  24. 28GHz帯におけるIntelligent Reflecting Surfaceの分割制御に関する実験的評価

    竹村都, 上川名琉人, 長野史門, 橋田紘明, 川本雄一, 加藤寧, 米田拓海, 村上友規

    電子情報通信学会技術研究報告, vol.124, no.366, RCS2024-213, pp.25-30　2025/01

  25. 28GHz帯におけるIntelligent Reflecting Surface制御時のビームスクイント発生に関する実験的評価

    桑原颯汰, 庄子瑠, 矢田目和弥, 橋田紘明, 川本雄一, 加藤寧, 米田拓海, 村上友規

    電子情報通信学会技術研究報告, vol.124, no.366, RCS2024-212, pp.19-24　2025/01

  26. Multi-AP連携環境における非協調APのチャネル可用性を考慮したCoordinated-OFDMAの周波数選択に関する研究

    日野原光二, 橋田紘明, 川本雄一, 加藤寧, 本塚裕幸, 浦部嘉夫

    電子情報通信学会技術研究報告, vol.124, no.366, RCS2024-211, pp.13-18　2025/01

  27. Hierarchical Exploration and Machine Learning With Exploration Results for Autonomous Control of Standalone-Intelligent Reflecting Surface

    Ryuhei Hibi, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    The 24th IEEE International Conference on Scalable Computing and Communications　2024/12

  28. Multiple Access Point Coordinated Orthogonal Frequency Division Multiple Access Considering Channel Fairness of Non-Coordinated Nodes International-presentation

    Mitsuni Hinohara, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Yoshio Urabe, Hiroyuki Motozuka

    2024 IEEE 100th Vehicular Technology Conference (VTC2024-Fall)　2024/10/07

  29. Performance Evaluation of Coordination Function Selection in Multi-AP Coordination for Next-Generation Wireless LANs International-presentation

    Kouki Iizuka, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Yoshio Urabe, Hiroyuki Motozuka

    2024 IEEE 100th Vehicular Technology Conference (VTC2024-Fall)　2024/10/07

  30. 3D Codebook Construction Strategy based on Control Accuracy Index for Intelligent Reflecting Surface in Near-field International-presentation

    Ryuhei Hibi, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2024 IEEE 100th Vehicular Technology Conference (VTC2024-Fall)　2024/10/07

  31. 低軌道衛星通信システムにおけるIntelligent Reflecting Surfaceを用いたアンテナ構成による周波数プリズムでのマルチビーム制御の検討

    関森柊太, 橋田紘明, 川本雄一, 加藤寧, 吉田昂平, 有吉正行

    電子情報通信学会技術研究報告, vol. 124, no. 165, SAT2024-35, pp. 16-20　2024/08/29

  32. Near-Field Behaviors of Intelligent Reflecting Surface: Experimental Measurements at 60GHz International-presentation

    Yuichi Kawamoto, Hiroaki Hashida, Yugo Tanabu, Mitsuni Hinohara, Hiroto Oshima, Nei Kato, Susumu Ano, Kazuto Yano

    2024 IEEE VTS Asia Pacific Wireless Communications Symposium (APWCS)　2024/08/21

  33. 環境変化に追従するIntelligent Reflecting Surface制御のための階層型コードブック構築に関する検討

    田名部勇吾, 橋田紘明, 川本雄一, 加藤寧

    電子情報通信学会技術研究報告, vol.124, no.84, RCS2024-75, pp.276-280　2024/06/21

  34. WLANにおけるMulti-AP連携の通信性能向上のための連携機能選択の提案

    飯塚晃輝, 橋田紘明, 川本雄一, 加藤 寧, 浦部嘉夫, 本塚裕幸

    電子情報通信学会技術研究報告, vol.124, no.84, RCS2024-74, pp.271-275　2024/06/21

  35. 部分的遮蔽モデルに基づくIntelligent Reflecting Surfaceの設置面積最適化

    橋田紘明, 川本雄一, 加藤寧

    電子情報通信学会技術研究報告　2024/06/19

  36. 3D Codebook Construction for IRS-aided Communication with Near-field Users International-presentation

    Ryuhei Hibi, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    A3 Foresight Program 2024 Workshop　2024/06

  37. Near- / Far- Field Behaviors of Intelligent Reflecting Surface

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2024/03/05

  38. Performance Analysis: Near-/ Far-Field Behaviors of Intelligent Reflecting Surface and Metallic Wall International-presentation

    Hiroaki Hashida

    A3 Foresight Program 2024 Workshop　2024/02

  39. Infrastructure Sharing among Multi-Mobile Network Operator for Intelligent Reflecting Surface-aided Communications

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    Technical Report of IEICE　2023/08/31

  40. Multi AP Coordination by Using IRS for Utilization of THz Bands in Wireless LAN

    2023/03/07

  41. Sharing Intelligent Reflecting Surface between Mobile Network Operators utilizing Machine Learning

    2023/03/07

  42. Infrastructure Sharing and Shared Operations for Intelligent Reflecting Surface-aided communications International-presentation

    Hiroaki Hashida

    A3 Foresight Program 2023 Workshop　2023/02/23

  43. Deep Reinforcement Learning-empowered passive beamforming design in IRS-aided Communications Without Channel State Information International-presentation

    Hiroaki Hashida

    A3 Foresight Program 2022 Workshop　2022/12/19

  44. Experimental Evaluations of Transparent Reflectors at 60 GHz

    Hiroaki Hashida, Ryuhei Hibi, Yuichi Kawamoto, Nei Kato, Toshio Enami, Hiroyuki Nomoto, Susumu Ano

    2022/11/15

  45. Selective Reflection Control-based Channel-estimation Overhead Reduction in Distributed IRS-aided Communication

    Hiroaki Hashida

    The 19th IEEE TOWERS in Kansai　2022/10/09

  46. Selective Reflection Control in Distributed IRS-aided Communication Systems

    Hiroaki Hashida

    The 19th IEEE TOWERS in Sendai　2022/09/11

  47. Deep Reinforcement Learning-based IRS-aided Wireless Communication without Channel State Information

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Masashi Iwabuchi, Tomoki Murakami

    IEICE Technical Report　2022/07/14

  48. User Mobility-aware Intelligent Reflecting Surface Association Strategy for Multi-beam Transmission

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato, Masashi Iwabushi, Tomoki Murakami

    2021/11/12

  49. Intelligent Reflecting Surface-aided Multi-beam Spatial Multiplexing

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEICE Society Conference　2021/09

  50. Selective Reflection Control in Intelligent Reflecting Surface-aided Mobile Communication Systems

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEICE General Conference　2021/03/12

  51. Selective Reflection Control-based Channel Estimation Overhead Reduction in IRS-aided Mobile Communication Systems

    Hashida Hiroaki, Kawamoto Yuichi, Kato Nei

    2021/03/05

  52. Propagation Pathloss-Based Intelligent Reflecting Surface Allocation Method in Cellular Communication System

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    IEICE Society Conference　2020/09/17

  53. Intelligent Reflecting Surface Placement Optimization in Cellular Communication Networks for Aerial Vehicles

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2020/07/10

  54. Impact of Internet-Wide Scanning on IoT Data Communication in Wireless LANs International-presentation

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2020 IEEE International Conference on Communications Workshops (ICC Workshops)　2020/06

  55. Inter-Cell Interference Coordination for Mobile Communications using Intelligent Reflecting Surface

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2020/03/17

  56. Adaptive Scanning Packet Transmission Control for IoT Devices in Wireless LAN International-presentation

    Hiroaki Hashida

    NSFC-JSPS Collaborative Research Project Workshop　2019/11/15

  57. Analysis of the impact of network scanning on WLAN communication

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2019/09/10

  58. Quantification of the impact of wide network scanning on IoT data communication in WLAN

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2019/07/10

  59. Research on wide area network scan techniques for the IoT wireless equipment -An analysis of the impact of network scanning on throughput of WLAN communication-

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    2019/03

  60. 衛星コンステレーションにおけるダイバーシティ方式を考慮した低遅延化のための衛星-地上間リンク選択手法の検討

    矢田目和弥, 橋田紘明, 川本雄一, 加藤寧, 須堯一志, 長谷川洋平, 有吉正行

    電子情報通信学会技術研究報告,　2025/05

Show all Show first 5

Industrial Property Rights 4

  1. 無線通信システム及び反射⽅向制御⽅法

    橋田 紘明, 田名部 勇吾, 川本 雄一, 加藤 寧, 米田拓海, 村上友規

    Property Type: Patent

  2. IRS Control Device, Storage Medium, and IRS Control Method

    Hiroaki Hashida, Yuichi Kawamoto, Nei Kato

    Property Type: Patent

  3. 制御装置、コードブック生成装置、制御方法、コードブック生成方法及びプログラム

    川本雄一, 橋田紘明, 日比龍平, 加藤寧

    特許7280654

    Property Type: Patent

  4. 無線通信方法、中継割当て方法

    川本雄一, 橋田紘明, 加藤寧, 岩渕匡史, 村上友規

    特許7624661

    Property Type: Patent

Research Projects 3

  1. Development of a Hierarchical Radio Propagation Control for Sustainable and Highly Reliable Wireless Communication Systems

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Early-Career Scientists

    Institution: Tohoku University

    2025/04/01 - 2028/03/31

  2. 異通信システム共用型知能電波反射面の制御方式の構築と持続可能な情報通信網への貢献

    橋田 紘明

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業

    Category: 研究活動スタート支援

    Institution: 東北大学

    2024/07 - 2026/03

  3. Designing intelligent reflecting surface-aided next-generation 6G/Beyond-5G wireless networks

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for JSPS Fellows

    Institution: Tohoku University

    2023/03 - 2024/03

Social Activities 4

  1. [招待講演] 博士課程を目指すあなたへ

    IEICE学生連合会

    2025/09/10 - 2025/09/10

  2. [招待講演] 育志賞を受賞して

    5周年記念イベント

    2024/11/16 - 2024/11/16

  3. 理系技術者・研究者にとっての大学院

    IEEE仙台YP・広島四国福岡YP 講演会

    2023/03/11 - 2023/03/11

  4. [招待講演] 博士後期課程への進学について

    博士課程のキャリアについて語る会

    2021/09/11 - 2021/09/11

Media Coverage 1

  1. ＡＩで業務を効率化 仙台市役所建て替え工事で実証実験

    khb東日本放送　https://www.youtube.com/watch?v=-MkWrbqDryQ&embeds_referring_euri=https%3A%2F%2Fwww.khb-tv.co.jp%2F&embeds_referring_origin=https%3A%2F%2Fwww.khb-tv.co.jp

    2025/12/05

    Type: TV or radio program