Online edition: ISSN 2432-6380
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RCS2025-31
Investigation of Beamforming Method Based on Block Diagonalization and Maximum Ratio Transmission for Multicast MIMO Transmission
Yusuke Saito (Tokyo Univ. of Science), Shuichi Matsumoto (JLabs), Yasuhiro Takishima (Waseda Univ.), Takeo Ohgane (Hokkaido Univ.), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 1 - 6
RCS2025-32
Investigation of HARQ Scheme for Predetermined-Rate Multicast MIMO Transmissions
Kai Shimizu (Tokyo Univ. of Science), Shuichi Matsumoto (JLabs), Yasuhiro Takishima (Waseda Univ.), Takeo Ohgane (Hokkaido Univ.), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 7 - 12
RCS2025-33
Investigation of TDD Frame Structure Optimization in Co-existing Networks with HAPS and Terrestrial BSs with Reverse Use of TDD Frame
Takane Nakazawa, Kenichi Higuchi (Tokyo Univ. of Science)
pp. 13 - 19
RCS2025-34
Investigation of Instantaneous Channel-Aware Packet Scheduling Method Considering Terminal-Specific Data Size and Allowable Transmission Delay
Yosuke Mori (Tokyo Univ. of Science), Yasuaki Yuda (Panasonic Holdings), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 20 - 25
RCS2025-35
Joint Clustering and Beamforming Design for Energy-Efficient Scalable Network-Assisted Full-Duplex Cell-Free Massive MIMO
Yuya Mito, Koushi Okui, Kohei Ueda, Koji Ishibashi (UEC)
pp. 26 - 31
RCS2025-36
A Study of Transmission Schemes for Temporal Broadening Effect in Terahertz Channels
Wakana Takemura, Kabuto Arai, Koji Ishibashi (UEC)
pp. 32 - 37
RCS2025-37
A Study on Low-Complexity Mutual Information Prediction Using Vector Similarity Search for Multi-User MIMO Systems
Koji Hashimoto, Fuga Kobayashi, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Kazushi Muraoka, Takanobu Doi (NEC), Hideki Ochiai (Osaka Univ.)
pp. 38 - 43
RCS2025-38
A Study on Rate Control of Polar Codes in Multi-User MIMO Systems
Hiroaki Otsuka, Takumi Takahashi, Hideki Ochiai (Osaka Univ.)
pp. 44 - 49
RCS2025-39
A Study on Adaptive Code Rate Selection in Polar Coded OFDM for Highly Reliable Communications
Ginga Hashimoto, Takumi Takahashi, Hideki Ochiai (Osaka univ.)
pp. 50 - 55
RCS2025-40
A study on physical layer encryption and transmission efficiency improvement using chaotic phase multiplication in multi-TRP environments
Kota Fujiyama, Eiji Okamoto (Nagoya Institute of Technology), Naoto Horiike, Tetsuya Yamamoto (Panasonic Holdings)
pp. 56 - 61
RCS2025-41
Study on reduction of reference signal transmission for indoor cooperative positioning by simulated annealing method
Yuichiro Miura, Eiji Okamoto (NITC)
pp. 62 - 67
RCS2025-42
Performance Comparison of Differential OFDM for Underwater Acoustic Communications by Shallow Water Experiments and Simple Pass-Band Channel Simulations
Takaaki Shimomura (Ritsumeikan Univ.), Mitsuyasu Deguchi, Yukihiro Kida, Takuya Shimura (JAMSTEC), Hiroshi Kubo (Ritsumeikan Univ.)
pp. 68 - 73
RCS2025-43
Jitter Analysis for Multi-Hop Relay Transmission in a Platoon with C-V2X Sidelink Communication
Issei Yurizono, Kousuke Sanada, Hiroyuki Hatano, Kazuo Mori (Mie Univ)
pp. 74 - 79
RCS2025-44
A Blockage-Aware Multi-Hop mmWave V2X Framework Aided by Digital Twin
Supat Roongpraiwan, Zongdian Li, Tao Yu, Kei Sakaguchi (Science Tokyo)
pp. 80 - 85
RCS2025-45
[Invited Talk]
Packet-Level Index Modulation Using LoRaWAN Class A
Mai Ohta (Kogakuin Univ.)
pp. 86 - 87
RCS2025-46
A Study on Millimeter-Wave MIMO-OFDM Channel Estimation Based on Deep Unfolding-Aided Tensor Decomposition
Shoma Hara, Takumi Takahashi, Hideki Ochiai (Osaka Univ.)
pp. 88 - 93
RCS2025-47
A Study on Training SNR Design for Deep Unfolding-Aided Generalized Approximate Message Passing
Taiki Hirata, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Hideki Ochiai (Osaka Univ.)
pp. 94 - 99
RCS2025-48
Autonomous Decentralized TRP Group Selection Method Considering Instantaneous Fading to Maximize System Throughput in Downlink Distributed MIMO
Naoki Yatabori, Takanori Hara (Tokyo Univ. of Science), Satoshi Suyama, Kiichi Tateishi, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 100 - 106
RCS2025-49
Decentralized Probabilistic Frequency Block-Dependent Base Station Sleep Control for Improving Energy Efficiency Under FTP Traffic Model
Ryo Tanaka, Takanori Hara (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 107 - 113
RCS2025-50
Autonomous Decentralized TRP Group Selection Method to Maximize System Throughput in Uplink Distributed MIMO
Kenta Shimizu, Takanori Hara (Tokyo Univ. of Science), Satoshi Suyama, Kiichi Tateishi, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 114 - 119
RCS2025-51
Autonomous Decentralized TRP Group Selection Method to Maximize System-Level Throughput Satisfaction Rate in Downlink Distributed MIMO
Ikki Yoshino, Takanori Hara (Tokyo Univ. of Science), Satoshi Suyama, Kiichi Tateishi, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 120 - 125
RCS2025-52
Investigation of PAPR Reduction Method Using Null Space in Massive MIMO Channel When Channel Estimation Error Exists
Risa Kubota (Tokyo Univ. of Science), Satoshi Suyama, Kiichi Tateishi, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science)
pp. 126 - 131
RCS2025-53
DU-based Low Complexity Precoding Weight for Multi-User Massive MIMO in Time-Variant Environment
Yuki Sasaki (TUS), Salah Berra (NII), Jin Nakazato (TUS), Rui Dinis (Nova FCT), Kazuki Maruta (TUS)
pp. 132 - 136
RCS2025-54
Channel Estimation for Millimeter-Wave and Sub-Terahertz MIMO Systems with Array Model Errors
Kabuto Arai, Koji Ishibashi (UEC)
pp. 137 - 142
RCS2025-55
Indoor Experimental Trial on Deep Learning-Based Pilotless Transmission Scheme
Hiroto Yamamoto (NTT), Atsuya Nakamura (NTT DOCOMO), Shuki Wai, Daisei Uchida (NTT), Satoshi Suyama, Huiling Jiang (NTT DOCOMO), Dani Korpi, Jaime j.l. Quispe (Nokia Bell Labs), Kyungpil Lee, Minsoo Na (SK Telecom)
pp. 143 - 148
RCS2025-56
Proposal of an Evaluation Method for Sub-THz-Band MIMO Spatial Multiplexing Considering Near-Field Propagation Characteristics
Taisei Kimoto, Toshihiko Nishimura, Ogawa Yasutaka (Hokkaido Univ.), Satoshi Suyama (NTT DOCOMO), Takeo Ohgane (Hokkaido Univ.)
pp. 149 - 154
RCS2025-57
Comparative Study of Channel Prediction Methods Using Compressed Sensing in Sub-THz-Band Communications
Emana Ushida, Toshihiko Nishimura, Yasutaka Ogawa (Hokkaido Univ.), Satoshi Suyama (NTT DOCOMO), Takeo Ohgane (Hokkaido Univ.)
pp. 155 - 160
RCS2025-58
Performance Evaluation of OAM Mode Generation and Multiplexing Using Uniform Planar Array Antennas
Raizo Murata, Toshihiko Nishimura, Takeo Ohgane (Hokkaido Univ.), Daisuke Uchida, Kentaro Taniguchi (Toshiba)
pp. 161 - 166
RCS2025-59
Experimental Evaluation of WLAN-based Device-Free Localization in Large-scale Indoor and Outdoor Environments
Fuma Kunihiro, Syunsuke Shimizu, Osamu Muta (Kyushu Univ.), Tomoki Murakami, Shinya Otsuki, Hanae Otani (NTT)
pp. 167 - 172
RCS2025-60
Experimental studies of Indoor Positioning using low power wide area signal with movable antennas
Haruto Morokuma, Zhuoran Li, Osamu Muta (Kyushu Univ.), Takuto Watanabe, Naohiro Ikeda (Tokyu)
pp. 173 - 178
RCS2025-61
A Study on Joint Peak Cancellation and In-Band Distortion Compensation for Analog-Digital Hybrid Massive MIMO-OFDM
Kiyoaki Inada, Mirena Omoto, Zhuoran LI, Osamu Muta (Kyushu Univ.), Koji Ikuta, Chung-hsiang Huang (KWIC)
pp. 179 - 184
RCS2025-62
A Study on Data-Driven Tuning of Least Squares Based on TDoA for UWB Indoor Positioning
Ryoichi Kawaguchi, Shinsuke Ibi, Hisato Iwai (Doshisha Univ.)
pp. 185 - 190
RCS2025-63
A Study on Two-Stage Blind Self-Interference Canceller for IBFD in 802.11ah
Yuya Kasai, Shinsuke Ibi, Hisato Iwai (Doshisha Univ.)
pp. 191 - 196
RCS2025-64
A Study on Machine Learning-Aided Correction of CLAS Positioning in Multipath Environments
Hayato Ishii, Shinsuke Ibi, Hisato Iwai (Doshisha Univ.)
pp. 197 - 202
RCS2025-65
Impact of Quantization Error in Phase-Controlled Massive MIMO Null-Space Expansion
Yuta Tsunoda, Kazuki Maruta (Tokyo Univ. of Science), Chunh-Siang Huang, Koji Ikuta (KWIC)
pp. 203 - 208
RCS2025-66
Optimization of Compression Rate Allocation for Image Segmentation Regions in MIMO DeepJSCC
Goki Sawada, Shion Inokuma (TUS), Daisuke Hisano (UOsaka), Kazuki Maruta (TUS)
pp. 209 - 214
RCS2025-67
Energy Consumption Oriented Grouping in Uplink with Terminal Collaborative Beamforming Transmission
Hiroto Sukenaka, Riku Nakaoka, Yukitoshi Sanada (Keio Univ)
pp. 215 - 220
RCS2025-68
Energy Consumption Oriented User Grouping in Terminal Collaborative MIMO Reception Technology
Kyogo Okada, Eiku Ando, Yukitoshi Sanada (Keio Univ.)
pp. 221 - 226
RCS2025-69
Beamforming Optimization for Suppressing Intra-Cell and Inter-Cell Interference in Frequency Sharing Between Ground and Sky Cells
Toshihisa Tsuji, Teruya Fujii (Science Tokyo)
pp. 227 - 232
RCS2025-70
Victim Location Identification System using WiFi installed in mobile terminal
Teruya Fujii (ISCT), Susumu Yoneda (SB)
pp. 233 - 238
RCS2025-71
Early commercialization and system evolution for HAPS direct-to-mobile-phone service
-- Inverse synchronization method for mitigating beam interference with adjacent HAPS in TDD communications of service links --
Yuki Hokazono, Hirofumi Nakajo, Daisuke Kurita, Atsunori Shimamura, Megumi Oozono, Kenji Fukasawa (NTT DOCOMO), Yuto Muroki (Space Compass), Munehiro Matsui, Hisayoshi Kano (NTT)
pp. 239 - 244
RCS2025-72
Early Commercialization and System Evolution for HAPS Direct-to-Mobile-Phone Service
-- Improving the Availability of Q-Band HAPS Feeder Links using Open-Loop UPC Based on Locally Measured Meteorological Data --
Yuto Muroki, Sunao Toya, Takuya Miyashita, Yoshihisa Kishiyama (Space Compass), Yuki Hokazono, Kenji Fukasawa (NTT DOCOMO), Hiromu Kitanozono (SJC)
pp. 245 - 250
RCS2025-73
Early Commercialization and System Evolution for HAPS Direct-to-Mobile-Phone Service
-- Evaluation of Frequency Reuse Methods in HAPS Systems for Improvement of Spectrum Utilization Efficiency --
Atsunori Shimamura, Yuki Hokazono, Daisuke Kurita, Hirofumi Nakajo, Megumi Ozono, Kenji Fukasawa (NTT DOCOMO), Yuto Muroki, Yoshihisa Kishiyama (Space Compass)
pp. 251 - 256
Note: Each article is a technical report without peer review, and its polished version will be published elsewhere.