| Presentation | 2021-01-22 Theoretical Study of User-wise Joint Transmit-receive Diversity for Multi-user MIMO Communication Fumiyuki Adachi, Ryou Takahashi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Multi-user MIMO spatial multiplexing has been recognized as an indispensable technique to significantly improve the spectrum efficiency. On the other hand, spatial diversity has long been recognized an indispensable technique to mitigate the multipath fading effect and to improve the signal transmission quality. Recently, we introduced user-wise joint transmit-receive diversity (JTRD) into multi-user MIMO spatial multiplexing and then confirmed its effectiveness in a fading environment. In this report, we provide the theoretical basis of multi-user MIMO coordinated with user-wise JTRD. A set of user-wise JTRD weight vectors at base station (BS) and each user can be determined by solving an eigenvalue equation constructed of single-user MIMO channel associated with each user. There are two types of user-wise JTRD by which side (BS or user) solves an eigenvalue equation to determine the JTRD weight vector. Their features are shown. The link capacity achievable by multi-user MIMO coordinated with user-wise JTRD is analyzed to show that the downlink capacity is equal to the uplink capacity when user-wise downlink transmit power constraint is used. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Multi-user MIMO / joint transmit-receive diversity / zero-forcing |
| Paper # | IT2020-100,SIP2020-78,RCS2020-191 |
| Date of Issue | 2021-01-14 (IT, SIP, RCS) |
| Conference Information | |
| Committee | SIP / IT / RCS |
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| Conference Date | 2021/1/21(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Kazunori Hayashi(Kyoto Univ.) / Tadashi Wadayama(Nagoya Inst. of Tech.) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Yukihiro Bandou(NTT) / Toshihisa Tanaka(Tokyo Univ. Agri.&Tech.) / Tetsuya Kojima(Tokyo Kosen) / Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) |
| Secretary | Yukihiro Bandou(Hosei Univ.) / Toshihisa Tanaka(Waseda Univ.) / Tetsuya Kojima(Yamaguchi Univ.) / Fumiaki Maehara(Saga Univ.) / Toshihiko Nishimura(Kyushu Univ.) / Tomoya Tandai(NEC) |
| Assistant | Yuichi Tanaka(Tokyo Univ. Agri.&Tech.) / Takahiro Ohta(Senshu Univ.) / Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| Paper Information | |
| Registration To | Technical Committee on Signal Processing / Technical Committee on Information Theory / 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) | Theoretical Study of User-wise Joint Transmit-receive Diversity for Multi-user MIMO Communication |
| Sub Title (in English) | |
| Keyword(1) | Multi-user MIMO |
| Keyword(2) | joint transmit-receive diversity |
| Keyword(3) | zero-forcing |
| 1st Author's Name | Fumiyuki Adachi |
| 1st Author's Affiliation | Tohoku University(Tohoku Univ.) |
| 2nd Author's Name | Ryou Takahashi |
| 2nd Author's Affiliation | Tohoku University(Tohoku Univ.) |
| Date | 2021-01-22 |
| Paper # | IT2020-100,SIP2020-78,RCS2020-191 |
| Volume (vol) | vol.120 |
| Number (no) | IT-320,SIP-321,RCS-322 |
| Page | pp.pp.206-211(IT), pp.206-211(SIP), pp.206-211(RCS), |
| #Pages | 6 |
| Date of Issue | 2021-01-14 (IT, SIP, RCS) |