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Affiliation
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Faculty of Science and Technology, Department of Information and Computer Science ( Yagami )
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Position
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Associate Professor
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E-mail Address
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Related Websites
Adachi, Koichi
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Career 【 Display / hide 】
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2007.04-2009.03
Japan Society for the Promotion of Science, 特別研究員（DC1）
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2009.04
City University of Hong Kong, Visiting Researcher
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2009.04-2010.03
Japan Society for the Promotion of Science, 特別研究員（PD）
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2009.06-2009.08
University of Keng, Visiting Researcher
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2010.04
Keio University, GCOE付き助教
Academic Background 【 Display / hide 】
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2001.04-2005.03
Keio University, 理工学部, 情報工学科
University, Graduated
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2005.04-2007.03
Keio University, 理工学研究科, 開放環境科学専攻
Graduate School, Completed, Master's course
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2007.04-2009.03
Keio University, 理工学研究科, 開放環境科学専攻
Graduate School, Completed, Doctoral course
Academic Degrees 【 Display / hide 】
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Ph.D. IN ENGINEERING, Keio University, Coursework, 2009.03
A Study on Iterative Signal Processing for Multi-Carrier MIMO Transmission
Research Areas 【 Display / hide 】
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Manufacturing Technology (Mechanical Engineering, Electrical and Electronic Engineering, Chemical Engineering) / Communication and network engineering
Papers 【 Display / hide 】
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Distributed Interference Avoidance in LoRaWAN via Spectral Features and Decision Tree
Aoto Kaburaki, Koichi Adachi
IEEE Wireless Commun. Lett. (Institute of Electrical and Electronics Engineers (IEEE)) 15 3846 - 3850 2026.06
Research paper (scientific journal), Joint Work, Last author, Accepted
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Toshi Ito, Osamu Takyu, Mai Ohta, Takeo Fujii, Koichi Adachi
IEEE Access (Institute of Electrical and Electronics Engineers (IEEE)) 14 91216 - 91231 2026.06
Research paper (scientific journal), Joint Work, Last author, Accepted
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Monitoring Resource Activity-Based Retransmission Control Process in Multi-Hop LoRaWAN
Kenji Akasu, Koki Aoyama, Takahiro Saraya, Koichi Adachi, and Jingon Joung
IEEE Internet of Things Journal (Institute of Electrical and Electronics Engineers (IEEE)) 13 ( 16 ) 35490 - 35504 2026.05
Research paper (scientific journal), Joint Work, Corresponding author, Accepted
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Differential STFLC with Resource Grid Mapping for Robust IoT Connectivity in Time-Varying Frequency-Selective Channels
Taehee Choi, Han-Gyeol Lee, Koichi Adachi, Seongwook Lee, and Jingon Joung
IEEE Internet of Things Journal (Institute of Electrical and Electronics Engineers (IEEE)) 13 ( 10 ) 22329 - 22344 2026.02
Research paper (scientific journal), Joint Work, Accepted
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DOA-Based Hybrid Reconfigurable Intelligent Surface Phase-Shift Design for Achievable Rate Enhancement
Taehee Choi, Jaehong Ki, Han-Gyeol Lee, Koichi Adachi, and Jingon Joung
IEEE Transactions on Vehicular Technology (Institute of Electrical and Electronics Engineers (IEEE)) 75 ( 7 ) 15148 - 15153 2026.01
Research paper (scientific journal), Joint Work, Accepted
Presentations 【 Display / hide 】
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[招待講演] 省電力広域ネットワーク（LPWAN）における無線資源割り当てに関する検討
安達宏一
[Domestic presentation] 電子情報通信学会無線通信システム（RCS）研究会,
2024.11,Oral presentation (invited, special)
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[Invited Talk] Towards Wireless Information & Power Transfer in Indoor Factory Environment by Local B5G/6G
Koichi Adachi, Takeo Fujii, Yoshiaki Narusue, Suguru Kameda, and Yoshiaki Nonaka
[International presentation] IEICE SmartCom,
2024.11,Oral presentation (invited, special)
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[依頼講演] パケット型インデックス変調方式の実機評価
太田真衣, 田久修, 安達宏一, 藤井威生
[Domestic presentation] 電子情報通信学会無線通信システム（RCS）研究会,
2024.05,Oral presentation (invited, special)
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［招待講演］パケット型インデックス変調方式の実用化検討について
太田真衣, 藤井威生, 安達宏一, 田久修
[Domestic presentation] 電子情報通信学会スマート無線（SR）研究会,
2022.11,Oral presentation (invited, special)
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［招待講演］ダイナミック周波数共用実現に向けた研究開発
山崎浩輔, 天野良晃, 岸洋司, 藤井威生, 安達宏一, 原田博司, 水谷圭一, 高田潤一, 齋藤健太郎, 不破泰, 田久修, 澤井亮, 木村亮太, 馬場覚志, 掛札祐範, 金本英樹, 安永毅
[Domestic presentation] 電子情報通信学会移動通信ワークショップ,
2020.03-2022.03,Oral presentation (invited, special)
Research Projects of Competitive Funds, etc. 【 Display / hide 】
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遅延・ドップラー領域の物理的スパース性を利用した環境適応型ISAC基盤技術の研究開発
2026.08-Present総務省, 持続可能な電波有効利用のための基盤技術研究開発事業, Commissioned ｒesearch, Principal investigator
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チャープ変調を用いる物理空間情報センシングに基づくビームフォーミングに関する研究
2025.04-Present科研費基盤B, Other, Principal investigator
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高度無線環境情報共有型無線センサネットワークの研究開発
2024.04-2026.03総務省, 戦略的情報通信研究開発推進事業フェーズII, Coinvestigator(s)
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ミリ波帯等にお ける移動通信シ ステムの展開に 関する研究開発
2024-Present総務省, 電波資源拡大のための研究開発, Commissioned ｒesearch, No Setting
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高度無線環境情報共有型無線センサネットワークの研究開発
2023.04-2024.03総務省, 戦略的情報通信研究開発推進事業フェーズI, Coinvestigator(s)
Intellectual Property Rights, etc. 【 Display / hide 】
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Radio communication methods and radio communication devices
Date issued： US10470179B2
Date registered： 2019.11
Patent, Joint
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All-digital software-defined cognitive heterogeneous network transceiver architecture
Date issued： US11057879B2
Date registered： 2021.07
Patent, Joint
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情報伝送システム、情報伝送方法、端末プログラムおよび基地局プログラム
Date issued： 7740695
Date registered： 2025.09
Patent, Joint
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通信システム及び通信方法
Date issued： 7738850
Date registered： 2025.09
Patent, Joint
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データ伝送方法
Date issued： 7765779
Date registered： 2025.10
Patent, Joint
Awards 【 Display / hide 】
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Best Paper Award (Co-author))
2025.07, The 13th International Conference on Ubiquitous and Future Networks (ICUFN’25), SR-IoT
Type of Award： Award from international society, conference, symposium, etc.
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通信ソサイエティ活動功労賞
2024.09, 電子情報通信学会
Type of Award： Award from Japanese society, conference, symposium, etc.
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通信ソサイエティ活動功労賞
2024.09, 電子情報通信学会
Type of Award： Award from Japanese society, conference, symposium, etc.
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通信ソサイエティ活動功労賞
2024.09, 電子情報通信学会
Type of Award： Award from Japanese society, conference, symposium, etc.
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Best Paper Award (Co-author)
2022.09, The 13th International Conference on Ubiquitous and Future Networks (ICUFN’22)
Type of Award： Award from international society, conference, symposium, etc.
Courses Taught 【 Display / hide 】
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INDEPENDENT STUDY ON SCIENCE FOR OPEN AND ENVIRONMENTAL SYSTEMS
2026
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ONLINE INTERNATIONAL INITIATIVE 4
2026
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HANGAKU-HANKYO PROJECT 3
2026
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GRADUATE RESEARCH ON INFORMATICS, MANAGEMENT, AND HUMAN SCIENCES A1
2026
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GRADUATE RESEARCH ON SCIENCE FOR OPEN AND ENVIRONMENTAL SYSTEMS 1
2026
Memberships in Academic Societies 【 Display / hide 】
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IEEE,
2005.12-Present -
電子情報通信学会,
2005.04-Present
Committee Experiences 【 Display / hide 】
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2026.01-Present
Chapters Coordination Committee (CCC) Vice-chair, IEEE ComSoc Asia Pacific Region
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2024.01-2025.12
Wireless Communications and Networking (WCN) Technical Committee Chair, APSIPA
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2017.07-2019.03
Associate Editor, IEEE Transactions on Vehicular Technology
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2016.09-2021.03
Editor, IEEE Transactions on Green Communications and Networking
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2016.01-2022.05
Associate Editor, IEEE Wireless Communications Letters
Click to view the Scopus page. The data was downloaded from Scopus API in October 11, 2026, via http://api.elsevier.com and http://www.scopus.com .