| Presentation | 2020-06-29 Distributed intelligent reflecting surfaces utilizing direction information in millimeter-wave communications Masashi Iwabuchi, Tomoki Murakami, Riku Ohmiya, Tomoaki Ogawa, Yasushi Takatori, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a distributed intelligent reflecting surfaces (IRSs) based on direction information instead of channel state information (CSI) for realizing a practical artificial channel control scheme for millimeter-wave communications. The proposed scheme employs IRSs that comprise a massive number of antenna elements and the reflection characteristic can be adjusted dynamically by individually controlling the phase of each IRS element. The distributed IRSs can compensate coverage and blockage in millimeter-wave communications. However, since the distributed IRSs is composed of multiple IRSs consist of massive elements, it suffers from overhead to collect CSI for controlling phase weight on each IRS element. Thus, we introduce beamforming weighting method based on direction information from IRS to transmitter and receiver points. Since this method is not necessary to collect detailed CSI, the overhead can be reduced. Simulation result shows the distributed IRSs can avoid blockage and achieve approximately 3.5 dB than the single larger IRS. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Millimeter-wave communications / Artificial channel control / Intelligent reflecting surface / Beamforming |
| Paper # | SRW2020-8 |
| Date of Issue | 2020-06-22 (SRW) |
| Conference Information | |
| Committee | SRW |
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| Conference Date | 2020/6/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | WLAN， WPAN， Ad-hoc, mmWave, etc. |
| Chair | Satoshi Denno(Okayama Univ.) |
| Vice Chair | Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Inst. of Tech.) / Hanako Noda(Anritsu) |
| Secretary | Keiichi Mizutani(Niigata Univ.) / Kentaro Saito(NTT) / Hanako Noda |
| Assistant | Akihito Noda(Nanzan Univ.) / Masaaki Fuse(Anritsu) |
| Paper Information | |
| Registration To | 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) | Distributed intelligent reflecting surfaces utilizing direction information in millimeter-wave communications |
| Sub Title (in English) | |
| Keyword(1) | Millimeter-wave communications |
| Keyword(2) | Artificial channel control |
| Keyword(3) | Intelligent reflecting surface |
| Keyword(4) | Beamforming |
| 1st Author's Name | Masashi Iwabuchi |
| 1st Author's Affiliation | NTT(NTT) |
| 2nd Author's Name | Tomoki Murakami |
| 2nd Author's Affiliation | NTT(NTT) |
| 3rd Author's Name | Riku Ohmiya |
| 3rd Author's Affiliation | NTT(NTT) |
| 4th Author's Name | Tomoaki Ogawa |
| 4th Author's Affiliation | NTT(NTT) |
| 5th Author's Name | Yasushi Takatori |
| 5th Author's Affiliation | NTT(NTT) |
| Date | 2020-06-29 |
| Paper # | SRW2020-8 |
| Volume (vol) | vol.120 |
| Number (no) | SRW-81 |
| Page | pp.pp.23-28(SRW), |
| #Pages | 6 |
| Date of Issue | 2020-06-22 (SRW) |