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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| CQ, CS (Joint) |
2024-05-17 13:20 |
Aichi | (Primary: On-site, Secondary: Online) |
[Special Invited Talk]
Optical Wireless Communications with Muliti-Input Multi-Output Technology Masaaki Katayama (Otemon Gakuin Univ.) |
(To be available after the conference date) [more] | |
| RCS | 2024-04-26 09:30 |
Hiroshima | (Primary: On-site, Secondary: Online) |
Performance Comparison of Null-Space Expansion in Low Computation Block Diagonalization-based Multi-User Massive MIMO Yuki Sasaki (Tokyo Univ, of Science), Kabuto Arai (The Univ. of Electro-Communications), Kazuki Maruta (Tokyo Univ, of Science)  RCS2024-6 |
This paper proposes a novel precoding weight design that enhances interference suppression performance with low computat... [more] | RCS2024-6 pp.26-31 |
| RCS, SR, SRW (Joint) |
2024-03-13 09:55 |
Tokyo | The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
User Scheduling based on Expanded Null-Space for Massive MIMO Yuki Sasaki (Tokyo Univ. of Scince), Kabuto Arai (The Univ. of Electro-Communications), Jin Nakazato (UTokyo), Kazuki Maruta (Tokyo Univ. of Scince) RCS2023-250 |
This paper proposes a user scheduling scheme for multi-user massive MIMO (MU-mMIMO), particularly effective in time-vary... [more] | RCS2023-250 pp.1-6 |
| RCS, SR, SRW (Joint) |
2024-03-13 13:10 |
Tokyo | The University of Tokyo (Hongo Campus), and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Beamforming/Null-steering for Millimeter-wave Transmission in High Mobility Environment Kazuki Maruta, Yuki Sasaki, Sojin Ozawa (Tokyo Univ. of Science), Kazuto Arai (The Univ. of Electro-Communications), Jin Nakazato, Manabu Tsukada (UTokyo) SRW2023-52 |
Spatial multiplexing performance of the multi-user MIMO is deteriorated in the mobility environment, especially using th... [more] | SRW2023-52 p.39 |
| AP, RCS (Joint) |
2023-11-15 16:00 |
Kumamoto | Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
Location-Based Broad-Range Null-Steering in V2I Multiuser MIMO Transmission Yuki Sasaki, Sojin Ozawa (Tokyo Univ. of Science), Kabuto Arai (The Univ. of Electro-Communications), Jin Nakazato, Manabu Tsukada (UTokyo), Kazuki Maruta (Tokyo Univ. of Science) RCS2023-161 |
This paper proposes a location based broad-range null-steering (BRNS) scheme for vehicle to everything (V2X) multiuser M... [more] | RCS2023-161 pp.51-56 |
| MIKA (3rd) |
2023-10-11 14:30 |
Okinawa | Okinawa Jichikaikan (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Performance Evaluation of collaborative MIMO Transmission Considering Overhead Rena Kurokawa, Haruya Ikeda, Kazuki Maruta (Tokyo Univ. of Science) |
Terminal collaborative Multiple-Input Multiple-Output (MIMO) transmission technology has been proposed as an advanced fo... [more] | |
| RCS, SAT (Joint) |
2023-08-31 11:20 |
Nagano | Naganoken Nokyo Building, and online (Primary: On-site, Secondary: Online) |
Null Spatial Expansion for Low-Complexity Block Diagonalization-based Multiuser Massive MIMO Yuki Sasaki, Kazuki Maruta (Tokyo Univ. of Science), Kabuto Arai (UEC) RCS2023-103 |
This paper proposes a new block diagonalization (BD)-based null-space expansion for multiuser Massive MIMO which offers ... [more] | RCS2023-103 pp.9-14 |
| RCS | 2023-06-14 10:10 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
A Study on performance improvement of uplink multi user radio encypted MIMO transmission scheme using accurate probability calculation Seiya Yamashita, Yuki Mori, Ryo Tozawa, Eiji Okamoto (NITech), Tetsuya Yamamoto (Panasonic) RCS2023-32 |
Multi-user MIMO (MU-MIMO) is known as an effective multiple access method, and we have previously proposed a multi-user ... [more] | RCS2023-32 pp.25-30 |
| RCS | 2023-06-14 16:25 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
Performance Improvement of Multiuser Massive MIMO Null-Space Expansion by Multi-Antenna Receiver Beamforming Yuki Sasaki, Kazuki Maruta (Tokyo Univ. of Science) RCS2023-43 |
(To be available after the conference date) [more] | RCS2023-43 pp.87-92 |
| RCS, AP, UWT (Joint) |
2022-11-17 09:55 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
A Study of Optimal Perturbation Vector Search Using Quantum Computing in Vector Perturbation Introducing Symmetry when Using MMSE Norms Keishi Hanakago, Ryo Takahashi, Takahiro Ohyama (PSNRD), Fumiyuki Adachi (Tohoku Univ.) RCS2022-175 |
VP (Vector Perturbation) is a nonlinear precoding for MU-MIMO (Multi-User Multi-Input Multi-Output). It is known that fu... [more] | RCS2022-175 pp.118-123 |
| AP | 2022-03-11 10:55 |
Online | Online | Simple Evaluation Method for 5G Using Continues wave in Multi-user MIMO Ryo Aoki, Kentaro Nishimori, Hiroki Sato (Niigata Univ.) AP2021-196 |
Expectations are high for the 5th generation mobile communication system (5G), which is expected to achieve 100 times hi... [more] | AP2021-196 pp.76-80 |
| RCS, SIP, IT | 2022-01-20 17:20 |
Online | Online | A Study on AoA Estimation-Aided Bayesian Receiver Design via Bilinear Inference for mmWave Large MIMO Kenta Ito, Takumi Takahashi, Koji Igarashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) IT2021-58 SIP2021-66 RCS2021-226 |
We propose a novel joint channel and data estimation (JCDE) scheme for mmWave large multi-user multi-input multi-output ... [more] | IT2021-58 SIP2021-66 RCS2021-226 pp.167-172 |
| RCS | 2021-10-21 14:50 |
Online | Online | [Invited Talk]
Generalization of a joint transmit-receive diversity and its application to multi-user MIMO communications Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2021-126 |
In this paper, joint transmit-receiver diversity (JTRD) is presented, which jointly perform transmit diversity and recei... [more] | RCS2021-126 pp.49-54 |
| RCS | 2021-06-23 13:30 |
Online | Online | Investigation of PAPR Reduction Using Null Space in MIMO Channel for MIMO-OFDM Signals in Multiple-Antenna AF Relay Transmission Yuki Sekiguchi (Tokyo Univ. of Science), Nobuhide Nonaka (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2021-39 |
In the 5th generation mobile communication system and beyond, the importance of relay transmission increases in order to... [more] | RCS2021-39 pp.62-67 |
| RCS | 2021-04-22 11:20 |
Online | Online | A Study on Impact of User-side Fading Correlation on Multi-user Joint Transmit/Receive Diversity Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2021-3 |
Multi-user joint transmit/receive diversity (JTRD) is able to perform multiuser multiplexing while achieving spatial div... [more] | RCS2021-3 pp.11-16 |
| SIP, IT, RCS | 2021-01-21 09:25 |
Online | Online | Transmission Performance for Multiuser MIMO System Under the multi path fading and the Spatial Correlations Environment Shogo Maeda, Hideaki Matsue (SUS) IT2020-70 SIP2020-48 RCS2020-161 |
This paper analyzed transmission performances for multiuser-MIMO system according to the number of users and spatially c... [more] | IT2020-70 SIP2020-48 RCS2020-161 pp.40-45 |
| SIP, IT, RCS | 2021-01-21 14:00 |
Online | Online | A Study of Pilot Assignment Optimization Based on Statistical Beam Selection for Large Multi-User MIMO Yuichi Ochi, Takumi Takahashi (Osaka Univ.), Shinsuke Ibi (Doshisha Univ.), Seiichi Sampei (Osaka Univ.) IT2020-78 SIP2020-56 RCS2020-169 |
We propose a novel pilot assignment optimization scheme based on statistical beam selection for significant pilot overhe... [more] | IT2020-78 SIP2020-56 RCS2020-169 pp.87-92 |
| SIP, IT, RCS | 2021-01-22 16:45 |
Online | Online | Theoretical Study of User-wise Joint Transmit-receive Diversity for Multi-user MIMO Communication Fumiyuki Adachi, Ryou Takahashi (Tohoku Univ.) IT2020-100 SIP2020-78 RCS2020-191 |
Multi-user MIMO spatial multiplexing has been recognized as an indispensable technique to significantly improve the spec... [more] | IT2020-100 SIP2020-78 RCS2020-191 pp.206-211 |
| RCS, AP, UWT (Joint) |
2020-11-25 10:15 |
Online | Online | A Study on Joint Channel and Data Estimation via Belief Propagation for Correlated Large MIMO Systems Kenta Ito, Takumi Takahashi (Osaka Univ), Shinsuke Ibi (Doshisha Univ), Seiichi Sampei (Osaka Univ) RCS2020-111 |
We propose a novel joint channel and data estimation (JCDE) scheme for correlated large multi-user multi-input multi-out... [more] | RCS2020-111 pp.7-12 |
| RCS | 2020-10-22 11:25 |
Online | Online | Multi-user MIMO coordinated with user-wise joint transmit-receive diversity using linear antenna array at BS Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2020-96 |
Multi-user MIMO spatial multiplexing has been recognized as an indispensable technique to significantly improve the spec... [more] | RCS2020-96 pp.24-29 |
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