| Presentation | 2015-04-17 Inter-user Interference Suppression with Null-Space Extension in Multiuser Massive MIMO for Time Varying Channel Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Takuto Arai, Masataka Iizuka, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | This paper proposes a new IUI suppression technique named “Null-Space Extension” with Massive MIMO in time varying channel environments. Massive MIMO usually uses the degrees of freedom of the base station antenna array to obtain the beamforming gain. The null-space extension uses the degrees to generate some additional null points, expands the dimension of the null space. Effectively suppression of IUI can be realized by using the current and the predicted CSI. In this paper, we evaluate the performance of null-space extension by computer simulation, and show its IUI suppression performance. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Massive MIMO / Multiuser MIMO / Channel Time Variation / Null-Space Extension |
| Paper # | RCS2015-17 |
| Date of Issue | 2015-04-09 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2015/4/16(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yufuin, Yufugoukan |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Radio Access Technologies, etc. |
| Chair | Makoto Taromaru(Fukuoka Univ.) |
| Vice Chair | Hidekazu Murata(Kyoto Univ.) / Eiji Okamoto(Nagoya Inst. of Tech.) |
| Secretary | Hidekazu Murata(Mitsubishi Electric) / Eiji Okamoto(NTT DoCoMo) |
| Assistant | Jun Mashino(NTT) / Manabu Mikami(Softbank Mobile) / Toshiaki Yamamoto(KDDI R&D Labs.) / Takamichi Inoue(NEC) / Tetsuya Yamamoto(Panasonic) / Koji Ishibashi(Univ. of Electro-Comm.) |
| 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) | Inter-user Interference Suppression with Null-Space Extension in Multiuser Massive MIMO for Time Varying Channel |
| Sub Title (in English) | |
| Keyword(1) | Massive MIMO |
| Keyword(2) | Multiuser MIMO |
| Keyword(3) | Channel Time Variation |
| Keyword(4) | Null-Space Extension |
| 1st Author's Name | Tatsuhiko Iwakuni |
| 1st Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 2nd Author's Name | Kazuki Maruta |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 3rd Author's Name | Atsushi Ohta |
| 3rd Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 4th Author's Name | Yushi Shirato |
| 4th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 5th Author's Name | Takuto Arai |
| 5th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 6th Author's Name | Masataka Iizuka |
| 6th Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| Date | 2015-04-17 |
| Paper # | RCS2015-17 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-2 |
| Page | pp.pp.89-94(RCS), |
| #Pages | 6 |
| Date of Issue | 2015-04-09 (RCS) |