| Presentation | 2022-08-25 A study on user-driven suboptimal joint transmit-receive diversity Fumiyuki Adachi, Ryo Takahashi, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In user-driven suboptimal joint transmit-receive diversity (JTRD), firstly the user equipment (UE) determines its diversity weight vector and then, the base station (BS) determines its diversity weight vector so as to maximize the resulting composite channel gain for the given UE diversity weight vector. While, the optimal JTRD jointly optimizes the diversity weight vectors at BS and UE by solving the eigen-equations composed of the correlation matrix of multi-input multi-output channel (MIMO channel). In principle, the user-driven suboptimal JTRD provides lower composite channel gain than the optimal JTRD. In this paper, the link capacity achievable with the user-driven suboptimal JTRD in a strong asymmetric MIMO fading channel, where the number of BS antennas is much larger than that of UE antennas, is numerically evaluated. It is shown that, in user-driven suboptimal JTRD, the selection diversity provides slightly higher link capacity than maximal-ratio diversity and that the link capacity gap between the user-driven suboptimal JTRD and the optimal JTRD becomes quite small. The selection diversity requires lower hardware and signal processing complexity than maximal-ratio diversity and thus, user-driven suboptimal JTRD with selection diversity can be considered practical. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Joint transmit-receive diversity / selection diversity / maximal-ratio diversity / MIMO fading channel |
| Paper # | RCS2022-102 |
| Date of Issue | 2022-08-18 (RCS) |
| Conference Information | |
| Committee | SAT / RCS |
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| Conference Date | 2022/8/25(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Tetsushi Ikegami(Meiji Univ.) / Kenichi Higuchi(Tokyo Univ. of Science) |
| Vice Chair | Masashi Kamei(NHK) / Takana Kaho(Shonan Inst. of Tech.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Muta(Kyushu Univ.) |
| Secretary | Masashi Kamei(NTT) / Takana Kaho(NICT) / Tomoya Tandai(Panasonic) / Fumihide Kojima(Univ. of Electro-Comm) / Osamu Muta(Sharp) |
| Assistant | Riichiro Nagareda(KDDI Research) / Yuuki Koizumi(NHK) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Issei Kanno(KDDI Research) / Yuyuan Chang(Tokyo Inst. of Tech) |
| Paper Information | |
| Registration To | Technical Committee on Satellite Telecommunications / 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) | A study on user-driven suboptimal joint transmit-receive diversity |
| Sub Title (in English) | |
| Keyword(1) | Joint transmit-receive diversity |
| Keyword(2) | selection diversity |
| Keyword(3) | maximal-ratio diversity |
| Keyword(4) | MIMO fading channel |
| 1st Author's Name | Fumiyuki Adachi |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Ryo Takahashi |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2022-08-25 |
| Paper # | RCS2022-102 |
| Volume (vol) | vol.122 |
| Number (no) | RCS-164 |
| Page | pp.pp.30-35(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-08-18 (RCS) |