| Presentation | 2023-10-20 Investigations on Low-Complexity User-Specific TRP Selection Method in Downlink Distributed MIMO with Channel Estimation Errors Hiroki Kato, Takanori Hara, Kenichi Higuchi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose a computationally-efficient method for user equipment (UE)-specific transmission reception points (TRP) selection in downlink distributed multi-input multi-output (MIMO) systems assuming the zero-forcing (ZF)-based beamforming (BF). The proposed method selects the set of TRPs used for respective UEs based only on the average path gain information between UEs and TRPs. Thus, the proposed method does not need a complex calculation of downlink BF matrix for TRP selection. On the other hand, the proposed TRP selection metric takes into account the achievable BF gain, spatial interference levels, and channel estimation errors. This is achieved by utilizing the average path gain information regarding not only the target UE but also its neighbor UEs. This differentiates the proposed method from the conventional ones and the proposed method can improve the system-level throughput performance. We assume the existence of realistic partial CSI scenario and channel estimation errors, and the computer simulation results show the effectiveness of the proposed method compared to the conventional approaches. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MIMO / distributed MIMO / cell-free MIMO / transmitter clustering / zero-forcing |
| Paper # | RCS2023-149 |
| Date of Issue | 2023-10-12 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2023/10/19(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kagawa University (Saiwai-cho Campus), and online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, Future Wireless Systems, etc. |
| Chair | Kenichi Higuchi(Tokyo Univ. of Science) |
| Vice Chair | Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) / Naoto Ishii(NEC) |
| Secretary | Fumihide Kojima(Univ. of Electro-Comm) / Osamu Muta(Sharp) / Naoto Ishii(Mitsubishi Electric) |
| Assistant | Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) / Kazuki Maruta(Tokyo Univ. of Science) / Kiichi Tateishi(NTT Docomo) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Investigations on Low-Complexity User-Specific TRP Selection Method in Downlink Distributed MIMO with Channel Estimation Errors |
| Sub Title (in English) | |
| Keyword(1) | MIMO |
| Keyword(2) | distributed MIMO |
| Keyword(3) | cell-free MIMO |
| Keyword(4) | transmitter clustering |
| Keyword(5) | zero-forcing |
| 1st Author's Name | Hiroki Kato |
| 1st Author's Affiliation | Tokyo University of Science(TUS) |
| 2nd Author's Name | Takanori Hara |
| 2nd Author's Affiliation | Tokyo University of Science(TUS) |
| 3rd Author's Name | Kenichi Higuchi |
| 3rd Author's Affiliation | Tokyo University of Science(TUS) |
| Date | 2023-10-20 |
| Paper # | RCS2023-149 |
| Volume (vol) | vol.123 |
| Number (no) | RCS-224 |
| Page | pp.pp.96-101(RCS), |
| #Pages | 6 |
| Date of Issue | 2023-10-12 (RCS) |