Online edition: ISSN 2432-6380
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RCS2026-25
Angle-Distance Separated Beam Training for IRS Control in Spherical-Wave Propagation Environments
Ryuhei Hibi, Hiroaki Hashida, Kawamoto Yuichi, Nei Kato (Tohoku Univ.)
pp. 1 - 4
RCS2026-26
Optimization of Channel State Feedback Volume Using Spatial Correlation Between Devices in Multi-AP Coordination
Mariko Ishikawa, Takanori Hara, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato (Tohoku Univ.), Yoshio Urabe, Hiroyuki Motozuka (Panasonic IP)
pp. 5 - 10
RCS2026-27
Modeling and Evaluation of Resonance Impact in Inter-Layer Propagation for Stacked Intelligent Metasurfaces
Yutaro Tanaka, Hiroaki Hashida, Yuichi Kawamoto, Nei Kato (Tohoku Univ), Takumi Yoneda, Tomoki Murakami (NTT, Inc.)
pp. 11 - 16
RCS2026-28
Covert Communication using Stacked Intelligent Metasurfaces
Shunto Nakajima (YNU), Kazuki Maruta (TUS), Naoki Ishikawa (YNU), Shun Kojima (CU)
pp. 17 - 22
RCS2026-29
On the Relationship Between Base Station Antenna Configuration and MIMO Channel Capacity Distribution
-- Outdoor UHF-Band 12x12 MIMO Vehicular Experiments --
Hayato Nakashima, Hidekazu Murata (Yamaguchi Univ.)
pp. 23 - 28
RCS2026-30
Massive MIMO-OFDM Transmission Robust to Doubly Selective Channels in Underwater Acoustic Communications
Shuji Nonaka, Kota Koyano, Ayaka Saeki (Tokyo Univ. of Science), Daisuke Hisano (KU), Mitsuyasu Deguchi, Yukihiro Kida, Takuya Shimura (JAMSTEC), Kazuki Maruta (Tokyo Univ. of Science)
pp. 29 - 34
RCS2026-31
Interference Suppression Performance of Null-Steering Using Coprime Array for Multihop NCR
Taisei Miyaoka, Yuta Tsunoda, Yuki Sasaki, Jin Nakazato, Kazuki Maruta (Tokyo Univ. of science)
pp. 35 - 40
RCS2026-32
Antenna Selection Aided Blind Uplink Interference Suppression for Cell-Free Massive MIMO Systems
Kotaro Fukue, Takeshi Kazama, Kazuki Maruta (TUS)
pp. 41 - 46
RCS2026-33
GA-Guided Multi-Agent Reinforcement Learning for UAV Relay Network Deployment Optimization
Wenbo Xu, Jin Nakazato (Tokyo Univ. of Science), Hideya So (Kogakuin Univ.), Mikio Hasegawa (Tokyo Univ. of Science)
pp. 47 - 52
RCS2026-34
A Study on Fully Digital Beamspace MIMO for the FR3 Band
Arata Itamoto, Toshihiko Nishimura, Yasutaka Ogawa, Katsuya Suto (Hokkaido Univ.), Yuta Hayashi, Satoshi Suyama (NTT DOCOMO)
pp. 53 - 58
RCS2026-35
[Invited Lecture]
Research on Millimeter-Wave Coverage Enhancement Using Metasurfaces
Takumi Yoneda, Tomoki Murakami, Riichi Kudo (NTT)
p. 59
RCS2026-36
Modality-Aware Unequal Error Protection for Multimodal Generative Semantic Communication
Satoshi Kinoshita, Yue Yin, Mondher Bouazizi, Tomoaki Ohtsuki (Keio Univ.)
pp. 60 - 65
RCS2026-37
Contextual Soft-Decision Token Detection via LMM-Based Generative Semantic Prior
Rei Ishizuka, Anders Ellersgaard, Tomoaki Ohtsuki (Keio Univ.)
pp. 66 - 71
RCS2026-38
Handover-Aware MEC Offloading in Space-Air-Ground Integrated Networks
Riku Nagase (Keio Univ.), Ahmed A. Al-Habob, Octavia Dobre (Memorial Univ.), Tomoaki Ohtsuki (Keio Univ.)
pp. 72 - 79
RCS2026-39
Experimental Evaluation of Coverage in Intersection Environment for 5G NR-based V2I Communication in 5 GHz Band
Taiki Matsumoto, Masaki Shimomura, Norichika Ohmi, Yusuke Koda, Hiroshi Harada (Kyoto Univ.)
pp. 80 - 85
RCS2026-40
Network construction method for autonomous vehicle-to-vehicle communication platform using 5G Sidelink signal
Keitaro Sato, Hiroshi Harada (Kyoto Univ)
pp. 86 - 91
RCS2026-41
On Efficient Shaping Bit Design for Polar Coded-OFDM Signals With PAPR Reduction
Syunsuke Numa, Takumi Takahashi, Hideki Ochiai (U Osaka)
pp. 92 - 97
RCS2026-42
A Study on Adaptive Polar Code Design and Symbol Distribution Approximation for Low-Complexity MIMO-OFDM Receivers
Tomoki Yokotani, Takumi Takahashi, Hideki Ochiai (Osaka Univ)
pp. 98 - 103
RCS2026-43
A Study on Polar-Domain Transform Matrix Design for Low-Complexity Channel Estimation in Near-Field XL-MIMO
Taichi Okabe, Takumi Takahashi, Hideki Ochiai (The Univ of Osaka)
pp. 104 - 109
RCS2026-44
A Study on Delay-Domain Denoising in Message Space for Joint Channel and CFO Estimation in MU-MIMO-OFDM System Uplink
Takuto Ikebayashi, Shoma Hara, Takumi Takahashi (Osaka Univ.), Kenta Ito (KDDI), Koji Ishibashi (UEC), Hedeki Ochiai (Osaka Univ.)
pp. 110 - 115
RCS2026-45
[Invited Lecture]
Overview of Communication Technology R&D Topics at Mitsubishi Electric
Yuta Hori, Shigenori Tani (MELCO)
p. 116
RCS2026-46
Near-Field Sub-THz MIMO Spatial Multiplexing Considering Subarray Spacing
-- Performance Evaluation with Channel Estimation --
Taisei Kimoto, Toshihiko Nishimura, Yasutaka Ogawa, Katsuya Suto (Hokkaido Univ.), Satoshi Suyama (NTT DOCOMO)
pp. 117 - 122
RCS2026-47
Performance Evaluation of Sub-THz-Band MIMO Channel Prediction Using OMP and Least Squares
Emana Ushida, Toshihiko Nishimura, Yasutaka Ogawa, Katsuya Suto (Hokkaido Univ.), Satoshi Suyama (NTT DOCOMO)
pp. 123 - 128
RCS2026-48
Evaluation of AI/ML-Based TRP Selection Method to Maximize System Throughput Using a 6G System-Level Simulator
Yuta Hayashi, Hiromasa Terashi, Dan Morhi, Satoshi Suyama, Yuyuan Chang, Huiling Jiang (NTT DOCOMO)
pp. 129 - 134
RCS2026-49
Investigation of Joint Optimization of Reverse Use of TDD Frame and User Association in Co-existing Networks with HAPS and Terrestrial BSs
Yuto Hotta (Tokyo Univ. of Science), Satoshi Nagata, Satoshi Suyama (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 135 - 140
RCS2026-50
Successive Path Estimation-Based Low-Complexity OTFS Channel Estimation in Fractional Doppler Channels
Hisashi Kano (Tokyo Univ. of Science), Takanori Hara (Tohoku Univ.), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 141 - 146
RCS2026-51
Investigation of NOMA Using Network Coding for FEC Coded Bits for Two-Way Relay Networks
Kaito Toda (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 147 - 153
RCS2026-52
Investigation of PAPR Reduction Using Null Space in MIMO Channel for Beamforming-Aided Multi-Antenna AF Relay Transmission
Shunta Okuno (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 154 - 160
RCS2026-53
[Invited Lecture]
Simulator to Design Wireless Communication Network in Ground-to-Train and inside Train Environments in High-Speed Trains
Koshiro Kitao, Satoshi Suyama, Nobuaki Kuno, Yuyuan Chang, Atsushi Kaji (NTT DOCOMO), Tomoyuki Tange (Central Japan Railway Company), Chikara Hirai (Railway Technical Research Institute), Koji Yotsumoto (KOKUSAI DENKI Electric Inc.), Masaki Hamamoto (JMCIA)
pp. 161 - 163
RCS2026-54
A Study on Neural Network-Based Spectrum Shaping Filter Design for FTN Transmissions
Shotaro Yajima, Shinsuke Ibi, Hisato Iwai (Doshisha Univ.)
pp. 164 - 169
RCS2026-55
A Study on Optimal Satellite Selection in Multi-GNSS Systems Using Machine Learning
Shota Kamada, Shinsuke Ibi, Hisato Iwai (Doshisha Univ.)
pp. 170 - 175
RCS2026-56
A Study on Wireless Autoencoder for Independent Component Analysis-Aided Signal Detection
Eita Kino, Shinsuke Ibi, Hisato Iwai (Doshisya Univ.)
pp. 176 - 181
RCS2026-57
A Study on Wireless Autoencoder for Data-Driven Tuning of Frozen Bit and Signal Constellation in Polar-Coded Modulation
Ikki Kawabata, Shinsuke Ibi (Doshisha Univ.), Takumi Takahashi (Univ. Osaka), Kazushi Muraoka, Takanobu Doi, Daichi Shirase (NEC), Hisato Iwai (Doshisha Univ.)
pp. 182 - 187
RCS2026-58
A Study on GNSS Positioning Correction Methods Using EPL Correlator Outputs and Doppler Frequency Information
Rikuto Matsuoka, Shinsuke Ibi, Hisato Iwai (Doshisha Univ.)
pp. 188 - 193
RCS2026-59
[Invited Lecture]
Application of Public Communication Network in Train Control Systems
Takayasu Kitano (RTRI)
p. 194
RCS2026-60
[Invited Talk]
Coordinated Design of Wireless Communication Technologies for Beyond 5G/6G
-- The Fascination of Scheme Selection through Research Case Studies --
Fumiaki Maehara (Waseda Univ.)
p. 195
RCS2026-61
Autonomous Decentralized TRP Group Selection Method in Downlink Distributed MIMO to Maximize Integrated System Throughput for Multi-Service Coexistence
Ryotaro Ozutsumi (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 196 - 202
RCS2026-62
Modified PAPR Reduction Method Using Null Broadening Based on Null Space in MIMO Channel for Massive MIMO Downlink
Wataru Aoki (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 203 - 208
RCS2026-63
Combination of Scalable User Scheduling Considering Channel Correlation and RZF-Based Beamforming in Cell-Free MIMO Networks
Hiroto Kikuchi (Tokyo Univ. of Science), Yasuaki Yuda (Panasonic Holdings), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 209 - 215
RCS2026-64
Neighboring-Beam SNR Interpolation-Based Beam Selection for Massive MIMO Analog Beamforming Using NOMA in Cellular Downlink
Takahiro Horikoshi (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 216 - 223
RCS2026-65
Performance Comparison of MIMO-THP and MIMO-NOMA in Analog-Digital Hybrid Architectures
Yuya Ishii, Kiyoaki Inada, Zhuoran Li, Osamu Muta (Kyushu Univ.), Koji Ikuta, Chun-hsiang Huang (KYOCERA)
pp. 224 - 229
RCS2026-66
Demonstration of Convolutional Code-Concatenated Chaos Modulation Scheme Using Simple Software Defined Radio for IoT Applications
Takumi Sugiura, Eiji Okamoto (Nitech), Naoto Horiike, Tetsuya Yamamoto (Panasonic)
pp. 230 - 235
RCS2026-67
Study on High-Precision V2X Millimeter-Wave Beam Tracking Method Based on Map Matching Using Heading Information
Kota Shinji, Eiji Okamoto (Nitech)
pp. 236 - 241
RCS2026-68
Study on Two-Sided AI/ML-Based Chaos Modulation for Achieving Both Communication Quality and Physical-Layer Secrecy
Shoki Mitsumoto, Eiji Okamoto (Nitech), Naoto Horiike, Tetsuya Yamamoto (Panasonic)
pp. 242 - 247
RCS2026-69
Fluid Intelligent Reflecting Surface-Assisted Physical Layer Key Generation
Maho Kumata (Yokohama National Univ.), Trinh Viet Phuc (Tokyo Univ.), Naioki Ishikawa (Yokohama National Univ.), Shun Kojima (Chiba Univ.)
pp. 248 - 253
RCS2026-70
Noncoherent Communication System Based on Quantum Operators
Nanami Yamamoto, Joe Asano, Naoki Ishikawa (Yokohama National Univ.)
pp. 254 - 259
RCS2026-71
[Invited Lecture]
Research and development of advanced wireless technologies for 6G
Masahiro Takigawa, issei Kanno, Masaya Shibayama, Hiromi Matsuno, Yoshiaki Amano (KDDI Research)
p. 260
RCS2026-72
LAPUTA: Sensor Network Localization Using Robust and Accurate Restoration of Euclidean Distance Matrices
Reina Kaneko, Kenta Yanagiya, Junya Hara, Hiroshi Higashi, Yuichi Tanaka (UO)
pp. 261 - 266
RCS2026-73
Study on Adaptive Power Allocation per Subcarrier for Overlaid Pilots in OFDM Systems
Koichi Wakata, Yukitoshi Sanada (Keio Univ.)
pp. 267 - 272
RCS2026-74
Fairness-Aware 3D UAV Placement in Downlink Hybrid Multiple Access Networks
Koji Yamamoto, Yukitoshi Sanada (Keio Univ.)
pp. 273 - 278
RCS2026-75
Study on Grouping Scheme Allowing Overlapping Membership in Terminal Cooperative MIMO
Naohiro Watanabe, Yukitoshi Sanada (Keio Univ.)
pp. 279 - 284
RCS2026-76
3D Bessel Beam Generation Using Reconfigurable Intellient Surfaces with Closed-Form Design
Daiki Inoue, Koji Ishibashi (UEC)
pp. 285 - 290
RCS2026-77
Inter-Operator Spectrum Sharing for Dead Zone Elimination via Beamforming and Transmission Power Reduction in Local 5G
Masaki Hattori, Takeo Fujii (UEC)
pp. 291 - 296
RCS2026-78
Connection
Ryoichi Nori, Jin Nakazato, Yuki Sasaki, Kazuki Maruta (TUS), Haruki Osaki, Tetsuya Iye (KKE), Mikio Hasegawa, Ibuki Ikeda (TUS)
pp. 297 - 302
RCS2026-79
Improvement of LoRa modulation and its evaluation
Popuri Sakai (ATR/Doshisha Univ.), Satoru Shimizu (ATR)
pp. 303 - 308
RCS2026-80
[Invited Lecture]
Introduction of EMC/Wireless Research at Advanced Telecommunications Research Institute International
Satoru Shimizu (ATR)
pp. 309 - 312
RCS2026-81
Partially DFT-Spread OFDM with Power Allocation for Terahertz Channels with Temporal Broadening
Wakana Takemura (UEC), Kabuto Arai (SU), Koji Ishibashi (UEC)
pp. 313 - 318
RCS2026-82
The impact of noise from the CPU board on mobile communication and identification of the noise source
Satoru Shimizu, Atsuya Kase, Susumu Ano (ATR)
pp. 319 - 324
RCS2026-83
A Study on Data-Driven Tuning of KalmanNet for GNSS Positioning in Multipath Environments
Hayato Ishii, Shinsuke Ibi, Hisato Iwai (Doshisha Univ.)
pp. 325 - 330
RCS2026-84
A Study on Data-Driven Tuning of Extended Weighted Least Squares for UWB Indoor Positioning
Ryoichi Kawaguchi, Shinsuke Ibi, Hisato Iwai (Doshisha Univ)
pp. 331 - 336
RCS2026-85
Entropy-Based Symbol Scheduling Considering CSI Aging in MIMO DeepJSCC
Goki Sawada, Shion Inokuma (Tokyo Univ. of Science), Daisuke Hisano (KU), Kazuki Maruta (Tokyo Univ. of Science)
pp. 337 - 342
RCS2026-86
Null-Space Expansion for OTFS-Modulated Multiuser Massive MIMO
Yuki Sasaki (Tokyo Univ. of Science), Omid Abbassi Aghda (Nova-FCT), Salah Berra (NII), Rui Dinis (Nova-FCT), Kazuki Maruta (Tokyo Univ. of Science)
pp. 343 - 347
RCS2026-87
Autonomous Decentralized TRP Group Selection for Maximizing System Throughput in Uplink Distributed MIMO
Kenta Shimizu (Tokyo Univ. of Science), Takanori Hara (Tohoku Univ.), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 348 - 354
Note: Each article is a technical report without peer review, and its polished version will be published elsewhere.