| Presentation | 2015-06-24 Effective Use of Spatial Dimension for Inter-user Interference suppression on Multiuser Massive MIMO under Time Varying Channel Environment Atsushi Ohta, Tatsuhiko Iwakuni, Kazuki Maruta, 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) | The authors have proposed the Inter-user Interference (IUI) suppression scheme on Multiuser Massive MIMO which utilizes the excess degrees of freedom on the massive antenna systems and employs redundant null beam forming. Though the good IUI suppression performance of the proposed scheme has been confirmed, it has been also clarified that its desired signal loss caused by the redundant null beam-firming is slightly greater than the theoretical value. In this paper, we firstly evaluate the effective degrees of freedom for MIMO channel vectors where the concrete BS antenna arrangements are assumed. In addition, we discuss the way for effective approach of IUI suppression with the relationship between BS antenna arrangements and its characteristic of channel vector space. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Massive MIMO / Multiuser MIMO / Time Varying Channel / Null-Space Expansion / Degree of Freedom |
| Paper # | RCS2015-54 |
| Date of Issue | 2015-06-17 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2015/6/24(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Hokkaido Univ. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
| Chair | Makoto Taromaru(Fukuoka Univ.) |
| Vice Chair | Hidekazu Murata(Kyoto Univ.) / Satoshi Denno(Okayama Univ.) / Yukitoshi Sanada(Keio Univ.) |
| Secretary | Hidekazu Murata(Mitsubishi Electric) / Satoshi Denno(NTT DoCoMo) / Yukitoshi Sanada |
| Assistant | Jun Mashino(NTT) / Tetsuya Yamamoto(Panasonic) / Takamichi Inoue(NEC) / Tomoya Tandai(Toshiba) / Toshihiko Nishimura(Hokkaido Univ.) |
| 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) | Effective Use of Spatial Dimension for Inter-user Interference suppression on Multiuser Massive MIMO under Time Varying Channel Environment |
| Sub Title (in English) | |
| Keyword(1) | Massive MIMO |
| Keyword(2) | Multiuser MIMO |
| Keyword(3) | Time Varying Channel |
| Keyword(4) | Null-Space Expansion |
| Keyword(5) | Degree of Freedom |
| 1st Author's Name | Atsushi Ohta |
| 1st Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 2nd Author's Name | Tatsuhiko Iwakuni |
| 2nd Author's Affiliation | Nippon Telegraph and Telephone Corporation(NTT) |
| 3rd Author's Name | Kazuki Maruta |
| 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 | 2015-06-24 |
| Paper # | RCS2015-54 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-113 |
| Page | pp.pp.49-54(RCS), |
| #Pages | 6 |
| Date of Issue | 2015-06-17 (RCS) |