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All Technical Committee Conferences (Searched in: All Years)
| Committee | Date Time | Place | Paper Title / Authors | Abstract | Paper # | |
| 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 |
(To be available after the conference date) [more] | RCS2024-6 pp.26-31 |
| RCS | 2024-04-26 09:55 |
Hiroshima | (Primary: On-site, Secondary: Online) |
Dimensionality Reduction of Interference Subspace on Simplified Null-Space Expansion for Massive MIMO Soya Nakamura, Yuki Sasaki, Kazuki Maruta (Tokyo Univ. of Science) RCS2024-7 |
(To be available after the conference date) [more] | RCS2024-7 pp.32-37 |
| 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 |
| MIKA (3rd) |
2023-10-11 14:30 |
Okinawa | Okinawa Jichikaikan (Primary: On-site, Secondary: Online) |
[Poster Presentation]
Dimensionality reduction of interference subspace on one-shot null-space expansion for massive MIMO Soya Nakamura, Yuki Sasaki, Maruta Kazuki (Tokyo Univ.Science) |
Massive MIMO Null Space Expansion (NSE) is effective multiuser precoding scheme in time-varying channels，taking advantag... [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 |
| 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 | 2023-06-14 09:40 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
Study on Characteristic Improvement of Direct-Binary Search Leveraged Loose Beam Forming in Massive MIMO Systems Yuta Hayashi, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Takeo Ohgane (Hokkaido Univ.) RCS2023-29 |
In massive MIMO systems, a loose beam forming method is considered to solve the problem of increased computation and ant... [more] | RCS2023-29 pp.7-12 |
| 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 | 2023-06-15 10:00 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
A Study on Joint Peak Cancellation and In-band Distortion Compensation for Precoded Massive MIMO-OFDM with Uniform Planar Array, Part-II Mirena Omoto, Riku Nojima, Osamu Muta (Kyushu Univ.), Kazuki Maruta (Tokyo Univ. of Science) RCS2023-50 |
The authors have proposed an in-band distortion compensation (IDC) scheme for peak cancellation (PC) based peak-to-avera... [more] | RCS2023-50 pp.129-134 |
| 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 | 2023-06-15 17:55 |
Hokkaido | Hokkaido University, and online (Primary: On-site, Secondary: Online) |
A Study on AP Antenna Configuration for Cell-Free Massive MIMO with Hybrid Beamforming in the Upper-mid Band. Shunsuke Kamiwatari, Masaaki Ito, Issei Kanno (KDDI Research, Inc.) RCS2023-64 |
Cell-Free massive multi-input multi-output (CF mMIMO) is a candidate foundation for the sixth-generation (6G). In additi... [more] | RCS2023-64 pp.212-217 |
| RCS | 2023-04-13 10:00 |
Shimane | Matsue New Urban Hotel, and online (Primary: On-site, Secondary: Online) |
A Study on Optimal Configuration of Massive Antenna for MU-MIMO Base Station Considering 3D Spatial Radio Arrival Angle Characteristics Kohei Mitsumoto, Ryohei Maeda, Hikari Tsuhama, Teruya Fujii (Tokyo Tech) RCS2023-1 |
In the 5th and 6th generation mobile communication systems, beamforming with massive antennas consisting of dozens to hu... [more] | RCS2023-1 pp.1-6 |
| AP | 2023-03-17 14:10 |
Toyama | Toyama Prefectural Civic Hall (Primary: On-site, Secondary: Online) |
Experimental Evaluation of Staircase Array Antenna employing Butler Matrix Hideya So, Takana Kaho (SIT), Yasuyoshi Yamamoto, Mizuki Suga, Yuta Takahashi, Yushi Shirato, Naoki Kita (NTT) AP2022-249 |
The authors have proposed a staircase array antenna consisting of a one-dimensional butler matrix and patch array antenn... [more] | AP2022-249 pp.87-92 |
| IT, RCS, SIP | 2023-01-24 15:55 |
Gunma | Maebashi Terrsa (Primary: On-site, Secondary: Online) |
Impact of Channel Estimation Error on Antenna Selection Using Simulated Annealing for Distributed MIMO Systems Kento Nishimura, Toshihiko Nishimura, Takanori Sato, Yasutaka Ogawa, Junichiro Hagiwara, Takeo Ohgane (Hokkaido Univ) IT2022-43 SIP2022-94 RCS2022-222 |
Distributed MIMO systems, which have been considered in recent years, use a very large number of base station antennas, ... [more] | IT2022-43 SIP2022-94 RCS2022-222 pp.78-83 |
| IT, RCS, SIP | 2023-01-25 10:50 |
Gunma | Maebashi Terrsa (Primary: On-site, Secondary: Online) |
DoA Estimation Based on Propagator Method for Analog-Digital Hybrid Massive MIMO Systems Takuma Yamazaki, Tetsushi Ikegami (Meiji Univ.) IT2022-59 SIP2022-110 RCS2022-238 |
Large-scale Multiple-Input Multiple-Output (MIMO) systems are MIMO systems with a large number of antenna elements and h... [more] | IT2022-59 SIP2022-110 RCS2022-238 pp.172-177 |
| RCS, NS (Joint) |
2022-12-15 15:45 |
Aichi | Nagoya Institute of Technology, and Online (Primary: On-site, Secondary: Online) |
A Study on Precoding Criterion for In-band Distortion Compensation in Massive MIMO-OFDM with Peak Cancellation Tomofumi Makita, Riku Nojima, Osamu Muta (Kyushu Univ.), Kazuki Maruta (Tokyo Univ. of Science) RCS2022-195 |
Recently, an enhanced peak cancellation (PC) scheme with an in-band distortion compensation (IDC) for peak– to-average p... [more] | RCS2022-195 pp.51-56 |
| RCS | 2022-10-27 12:30 |
Ehime | Ehime University, and online (Primary: On-site, Secondary: Online) |
[Invited Lecture]
Research Activities for Deploying Cell-Free Massive MIMO Systems Masaaki Ito (KDDI Research/USC), Shunsuke Kamiwatari, Noboru Osawa, Issei Kanno, Yoshiaki Amano (KDDI Research) RCS2022-132 |
In cell-free massive MIMO systems, a massive number of distributed antennas cooperate with each other and communicate wi... [more] | RCS2022-132 p.25 |
| RCS | 2022-10-28 09:25 |
Ehime | Ehime University, and online (Primary: On-site, Secondary: Online) |
Improving Semi-Blind Interference Suppression on Multi-Cell Massive MIMO Systems by Multi-Antenna Users Kazuki Maruta (Tokyo Univ. of Science) RCS2022-142 |
When the number of spatial multiplexing is increased in a Massive MIMO system to increase capacity, the number of orthog... [more] | RCS2022-142 pp.65-70 |
| RCS | 2022-10-28 10:15 |
Ehime | Ehime University, and online (Primary: On-site, Secondary: Online) |
A Study on Interference Suppression ZF-based MU-MIMO for Cluster-Centric Cell-Free Massive MIMO Systems Sijie Xia, Chang Ge, Ryo Takahashi, Qiang Chen, Fumiyuki Adachi (Tohoku Univ.) RCS2022-144 |
Cell-free massive multi-input multi-output (CF-mMIMO), which is recently under extensive study, is considered to be an e... [more] | RCS2022-144 pp.77-82 |
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