| Presentation | 2015-06-25 Iterative Time-Domain Compression Method of MIMO Channel State Information Tomohiro Nabeshima, Kenichi Higuchi, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this paper, we propose an iterative time-domain compression method multiple-input multiple-output (MIMO) channel state information (CSI). An efficient MIMO-CSI compression is essential for reducing the feedback overhead of MIMO-CSI from the user terminal receiver to the base station transmitter for beamforming (precoding), especially when the number of antennas is large. The proposed method is based on the time-domain CSI compression method with frequency-domain CSI bundling and interpolation for all combinations of transmitter and receiver antennas in the literature. In this method, how much the CSI compression is achieved or how accurate the compressed CSI is dominantly dependent on the the interpolation between CSI of different antenna sets. While the previous works assume simple linear or spline interpolation, the proposed method iteratively updates the interpolation vector so that the CSI error due to compression is minimized. The numerical results show that the proposed method can improve the accuracy of the compressed CSI or enhance the CSI compression ratio compared to the conventional method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MIMO / beamforming / precoding / channel state information / CSI / compression |
| Paper # | RCS2015-66 |
| 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) | Iterative Time-Domain Compression Method of MIMO Channel State Information |
| Sub Title (in English) | |
| Keyword(1) | MIMO |
| Keyword(2) | beamforming |
| Keyword(3) | precoding |
| Keyword(4) | channel state information |
| Keyword(5) | CSI |
| Keyword(6) | compression |
| 1st Author's Name | Tomohiro Nabeshima |
| 1st Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| 2nd Author's Name | Kenichi Higuchi |
| 2nd Author's Affiliation | Tokyo University of Science(Tokyo Univ. of Science) |
| Date | 2015-06-25 |
| Paper # | RCS2015-66 |
| Volume (vol) | vol.115 |
| Number (no) | RCS-113 |
| Page | pp.pp.119-124(RCS), |
| #Pages | 6 |
| Date of Issue | 2015-06-17 (RCS) |