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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| AP | 2024-03-14 10:25 |
Fukui | UNIVERSITY OF FUKUI (Primary: On-site, Secondary: Online) |
Direction of arrival estimation using neural networks and Uniform Cross Array for LoS-MIMO transmission Motoshi Tawada, Yoshichika Ohta (SoftBank)  AP2023-202 |
The feeder link between the fixed ground station and the HAPS requires high capacity to accommodate the traffic of termi... [more] | AP2023-202 pp.7-10 |
| 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 |
| SRW, SeMI (Joint) |
2023-11-22 09:30 |
Tokyo | Koganei Campus, Tokyo University of Agriculture and Technology (Primary: On-site, Secondary: Online) |
[Short Paper]
A Study on Port Arrangement of Analog Beamforming Network Using 3-dimensional Luneburg Lens Maki Arai, Mikio Hasegawa (Tokyo Univ. of Science) SRW2023-34 |
In this report, we propose a method to design an input/output-port arrangement using a directivity correlation matrix fo... [more] | SRW2023-34 p.31 |
| AP, RCS (Joint) |
2023-11-15 13:25 |
Kumamoto | Kumamoto Prefectural Workers' Welfare Hall (Primary: On-site, Secondary: Online) |
Performance Evaluation of Beam Search Scheme using Fast Beam Steering Hideya So, Kouki Namegaya (SIT), Kazuki Maruta (TUS), Takana Kaho (SIT) RCS2023-156 |
This report proposes a multiple beam searches with fast beam steering within a single synchronization signal block (SSB)... [more] | RCS2023-156 pp.24-28 |
| SIS, ITE-BCT | 2023-10-12 14:45 |
Yamaguchi | HISTORIA UBE (Primary: On-site, Secondary: Online) |
Performance evaluation of null-space expanded linear reception technique over time-varying MIMO channels Yuki Ohi, Hidekazu Murata (Yamaguchi Univ.), Makoto Taromaru (Fukuoka Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) |
This paper considers the improvement of multiple-input multiple-output signal separation performance using a linear spat... [more] | |
| CQ, MIKA (Joint) (2nd) |
2023-08-31 10:50 |
Fukushima | Tenjin-Misaki Sports Park | [Poster Presentation]
Coexistence of Wireless Power Transfer and Communication by Null-Space Expansion Shuma Okita, Yuki Sasaki, Kazuki Maruta (Tokyo Univ. of Science), Takahiro Matuda (Tokyo Metropolitan Univ.), Takefumi Hiraguri (NIT), Tomotaka Kimura (Doshisha Univ.) |
Wireless power transfer (WPT) is a promising technology to effectively supply energy to a large number of IoT devices. ... [more] |
|
| RCS | 2023-06-15 10:10 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
Investigation of PAPR Reduction Method Using Null Space in MIMO Channel for Massive MIMO-OFDM Signals with Uniform Planar Array Soma Taguchi (Tokyo Univ. of Science), Satoshi Suyama, Satoshi Nagata (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2023-51 |
In this paper, we consider the application of our previously reported PCCNC (peak cancellation with channel-null constra... [more] | RCS2023-51 pp.135-140 |
| RCS, SR, SRW (Joint) |
2023-03-01 11:15 |
Tokyo | Tokyo Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
Performance Improvement of Linear MIMO Reception over Time-Variant Channels Using Null-Space Expansion Yuki Ohi, Hidekazu Murata (Yamaguchi Univ.), Makoto Taromaru (Hukuoka Univ.), Tatsuhiko Iwakuni, Daisei Uchida, Naoki Kita (NTT) RCS2022-250 |
This paper considers the improvement of MIMO signal separation performance using a linear spatial filter in a time-varyi... [more] | RCS2022-250 pp.21-24 |
| AP | 2023-02-15 13:50 |
Miyagi | Tohoku University, Aobayama Campus (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Design and Analysis of LoS-MIMO System with Uniform Cross Array Composed of Dual-polarized Antennas Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (SoftBank) AP2022-204 |
Research and development of communication services using radios and antennas mounted on vehicles, unmanned aerial vehicl... [more] | AP2022-204 pp.40-45 |
| RCS, AP, UWT (Joint) |
2022-11-16 09:30 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
A behavior of user-driven multiuser joint transmit-receive diversity in an asymmetric MIMO fading channel Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2022-163 |
In this paper, we study user-driven multi-user JTRD. In user-driven multi-user JTRD, each user terminal (UE) determines ... [more] | RCS2022-163 pp.49-54 |
| RCS, AP, UWT (Joint) |
2022-11-16 14:55 |
Fukuoka | Kyushu University, and Online (Primary: On-site, Secondary: Online) |
LoS-MIMO Transmission Experiment Using Dual-polarized Antennas. Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (SoftBank) AP2022-163 |
Research and development of communication services using radios and antennas mounted on vehicles, UAVs, HAPS, and other ... [more] | AP2022-163 pp.91-96 |
| SAT, RCS (Joint) |
2022-08-25 12:05 |
Hokkaido | (Primary: On-site, Secondary: Online) |
A study on user-driven suboptimal joint transmit-receive diversity Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2022-102 |
In user-driven suboptimal joint transmit-receive diversity (JTRD), firstly the user equipment (UE) determines its divers... [more] | RCS2022-102 pp.30-35 |
| SAT, RCS (Joint) |
2022-08-26 11:40 |
Hokkaido | (Primary: On-site, Secondary: Online) |
Inter-cell Interference Control by Joint Transmit Power and Transmit Beamforming Control based on Machine Learning Naoto Tamada, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech) RCS2022-118 |
In mobile communications, densely deployed small cell systems using the same frequency band are expected to increase the... [more] | RCS2022-118 pp.120-125 |
| AP | 2022-08-19 13:25 |
Tochigi | Tochigi Prefecture Industrial Center (Primary: On-site, Secondary: Online) |
A Study on Robust LoS-MIMO Transmission in HAPS Feeder Link Motoshi Tawada, Yoshichika Ohta, Atsushi Nagate (Softbank) AP2022-68 |
In line of sight multiple input multiple output (LoS-MIMO) transmission in a feeder link, which involves communication b... [more] | AP2022-68 pp.23-28 |
| AP (2nd) |
2022-06-10 11:25 |
Hokkaido | Nemuro General Cultural Center (Primary: On-site, Secondary: Online) |
9-Frequency Band Small Planar Antenna for Base Station - Small Version Yutaka Tomizawa, Yuta Nakashima, Hiroki Hagiwara (Dengyo), Masayuki Nakano (KDDI Research) |
Some radio base station antennas share two or more frequencies. This time, about the multi-band polarization shared smal... [more] | |
| IN, RCS, NV (Joint) |
2022-05-26 09:55 |
Kanagawa | Keio University (Hiyoshi Campus) (Primary: On-site, Secondary: Online) |
Incorporation of MU-MIMO Technology into User-centric Cell-Free mMIMO System Sijie Xia, Chang Ge, Ryo Takahashi, Qiang Chen, Fumiyuki Adachi (Tohoku Univ.) RCS2022-14 |
Recently, cell-free massive multiple-input-multiple-output (CF-mMIMO) system has been attracting a great attention. CF-m... [more] | RCS2022-14 pp.7-12 |
| SRW, SeMI, CNR (Joint) |
2021-11-25 09:55 |
Tokyo | Kikai-Shinko-Kaikan Bldg. (Primary: On-site, Secondary: Online) |
Soft Input Decoding Based on Superposition of Hard Decision Signals Koki Kashihara, Satoshi Denno, Hou Yafei (Okayama Univ.) SRW2021-30 |
In MIMO (Multiple-Input Multiple-Output) communication, it is possible to detect hard judgment signals with low calculat... [more] | SRW2021-30 pp.7-12 |
| AP, RCS (Joint) |
2021-11-11 11:45 |
Nagasaki | NBC-Bekkan (Nagasaki) (Primary: On-site, Secondary: Online) |
A recursive solution of joint transmit-receive diversity weight vectors Fumiyuki Adachi, Ryo Takahashi (Tohoku U.) RCS2021-161 |
Optimal joint transmit-receive diversity (JTRD) is a type of multi-input multi-output (MIMO) spatial diversity technique... [more] | RCS2021-161 pp.98-103 |
| CQ, MIKA (Joint) |
2021-09-09 14:40 |
Online | Online | [Invited Talk]
Advancement of Multiuser Massive MIMO Null-Space Expansion Kazuki Maruta (Tokyo Tech) CQ2021-46 |
Massive multiple-input multiple-output (MIMO) technology with base stations having more than a hundred antennas has been... [more] | CQ2021-46 p.46 |
| MW, AP (Joint) |
2021-09-10 11:10 |
Online | Online | Relationship between OAM Modes and MIMO Modes of Double Ring Circular Array Hideaki Sugiura, Takuichi Hirano (TCU) MW2021-35 |
The MIMO eigenmodes generated from double ring circular array antennas was compared with Orbital Angular Momentum (OAM) ... [more] | MW2021-35 pp.12-17 |
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