| Presentation | 2016-01-18 Iterative Time-Domain Compression Method of MIMO Channel State Information Using Iterative Updates of Path Selection 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 enhanced approach of our previously proposed 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. Our previously proposed method is based on the time-domain CSI compression method by selecting K-best paths with high power 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 interpolation between CSI of different antenna sets. While the previous works assume simple linear or spline interpolation, our previously proposed method iteratively updates the interpolation vector so that the CSI error due to compression is minimized. In our original proposal, the K-best paths are selected at the initial iteration and are fixed in the following iterations. In this paper, we proposed an adaptive update of K-best paths at each iteration. The numerical results show that the proposed method can improve the accuracy of the compressed CSI or enhance the CSI compression ratio compared to our previous method with fixed path selection. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | MIMO / beamforming / precoding / channel state information / CSI / compression |
| Paper # | IT2015-56,SIP2015-70,RCS2015-288 |
| Date of Issue | 2016-01-11 (IT, SIP, RCS) |
| Conference Information | |
| Committee | RCS / IT / SIP |
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| Conference Date | 2016/1/18(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kwansei Gakuin Univ. Osaka Umeda Campus |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Signal Processing for Wireless Communications, Learning, Mathematical Science, Communication Theory, etc. |
| Chair | Makoto Taromaru(Fukuoka Univ.) / Yasutada Oohama(Univ. of Electro-Comm.) / Osamu Houshuyama(NEC) |
| Vice Chair | Hidekazu Murata(Kyoto Univ.) / Satoshi Denno(Okayama Univ.) / Yukitoshi Sanada(Keio Univ.) / Tadashi Wadayama(Nagoya Inst. of Tech.) / Makoto Nakashizuka(Chiba Inst. of Tech.) / Masahiro Okuda(Univ. of Kitakyushu) |
| Secretary | Hidekazu Murata(Mitsubishi Electric) / Satoshi Denno(NTT DoCoMo) / Yukitoshi Sanada(Univ. of Electro-Comm.) / Tadashi Wadayama(Wakayama Univ.) / Makoto Nakashizuka(NEC) / Masahiro Okuda(Ritsumeikan Univ.) |
| Assistant | Jun Mashino(NTT) / Tetsuya Yamamoto(Panasonic) / Takamichi Inoue(NEC) / Tomoya Tandai(Toshiba) / Toshihiko Nishimura(Hokkaido Univ.) / Takuya Kusaka(Okayama Univ.) / Takamichi Miyata(Chiba Inst. of Tech.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Information Theory / Technical Committee on Signal Processing |
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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 Using Iterative Updates of Path Selection |
| 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 | 2016-01-18 |
| Paper # | IT2015-56,SIP2015-70,RCS2015-288 |
| Volume (vol) | vol.115 |
| Number (no) | IT-394,SIP-395,RCS-396 |
| Page | pp.pp.49-54(IT), pp.49-54(SIP), pp.49-54(RCS), |
| #Pages | 6 |
| Date of Issue | 2016-01-11 (IT, SIP, RCS) |