| Presentation | 2021-03-05 Selective Reflection Control-based Channel Estimation Overhead Reduction in IRS-aided Mobile Communication Systems Hashida Hiroaki, Kawamoto Yuichi, Kato Nei, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Intelligent reflecting surfaces (IRSs) are promising for providing additional propagation paths for users in a dead zone to enhance the robustness of wireless transmission against shielding. Nevertheless, the channel estimation overhead proportionately increases with the number of IRSs, making it difficult to handle multiple IRS. Therefore, we propose a transmission control procedure that aimed at reducing channel estimation overhead in distributed IRS communication systems, where a multi-antenna base station serves multiple user equipment (UE) with multi-user multiple-input multiple-output orthogonal frequency division multiplexing (MU-MIMO-OFDM). First, a novel selective reflection control (SRC) method is proposed, in which each IRS controls its reflection coefficient in relation to only part of the UEs, and not for all UEs. Simulation results confirm that the proposed method based on the SRC satisfied the signal-to-interference-plus-noise ratio requirement of the UE, which suffers from severe radio wave attenuation with less channel estimation overhead. The proposed method also show its capability in suppressing the proportional growth of channel estimation overhead with the increase in the number of IRS, which may accelerate the large scale deployment of IRS. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Intelligent Reflecting Surface (IRS) / channel estimation |
| Paper # | RCS2020-250 |
| Date of Issue | 2021-02-24 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2021/3/3(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Masayuki Ariyoshi(NEC) / Satoshi Denno(Okayama Univ.) |
| Vice Chair | Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Suguru Kameda(Tohoku Univ.) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Inst. of Tech.) / Hanako Noda(Anritsu) |
| Secretary | Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(NEC) / Tomoya Tandai(ATR) / Suguru Kameda(Univ. of Electro-Comm.) / Osamu Takyu(Mie Univ.) / Kentaro Ishidu(NTT) / Keiichi Mizutani(NIigata Univ.) / Kentaro Saito / Hanako Noda |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Mai Ohta(Fukuoka Univ.) / Teppei Oyama(Fujitsu Lab.) / Kentaro Kobayashi(Nagoya Univ.) / Masaaki Fuse(Anritsu) / Akihito Noda(Nanzan Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Selective Reflection Control-based Channel Estimation Overhead Reduction in IRS-aided Mobile Communication Systems |
| Sub Title (in English) | |
| Keyword(1) | Intelligent Reflecting Surface (IRS) |
| Keyword(2) | channel estimation |
| 1st Author's Name | Hashida Hiroaki |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Kawamoto Yuichi |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 3rd Author's Name | Kato Nei |
| 3rd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2021-03-05 |
| Paper # | RCS2020-250 |
| Volume (vol) | vol.120 |
| Number (no) | RCS-404 |
| Page | pp.pp.212-217(RCS), |
| #Pages | 6 |
| Date of Issue | 2021-02-24 (RCS) |