| Presentation | 2022-03-02 MMSE Pre-cancellation Matrix Switching for BP MIMO Detection in Overloaded MIMO Systems Takashi Imamura, Yukitoshi Sanada, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this report, BP MIMO detection with MMSE pre-cancellation matrix switching in overloaded MIMO systems is proposed. The loops in the factor graph degrade the demodulation performance of the BP scheme. Therefore, several schemes that suppresses the negative impact of loopy BP have been investigated. Among them, the application of MMSE pre-cancellation prior to BP has been proposed. In the scheme, the effects of loops in the factor graph is suppressed by MMSE pre-cancellation, however many loops with large coefficients remains in the factor graph even after MMSE pre-cancellation because the factor graph for overloaded MIMO systems includes many loops. Therefore, the proposed scheme applies MMSE pre-cancellation matrix switching every after a preset number of BP iterations in order to suppress the occurrence of large beliefs in the loops. Numerical results obtained through computer simulation show that the proposed scheme outperforms that by 0.7 dB at BER$=10^{-3}$. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | BP / MMSE / Overloaded MIMO Detection |
| Paper # | RCS2021-257 |
| Date of Issue | 2022-02-23 (RCS) |
| Conference Information | |
| Committee | RCS / SR / SRW |
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| Conference Date | 2022/3/2(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communication Workshop |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) / Suguru Kameda(Hiroshima Univ.) / Hanako Noda(Anritsu) |
| Vice Chair | Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) / Fumihide Kojima(NICT) / Osamu Takyu(Shinshu Univ.) / Kentaro Ishidu(NICT) / Kazuto Yano(ATR) / Keiichi Mizutani(Kyoto Univ.) / Kentaro Saito(Tokyo Denki Univ.) / Hirokazu Sawada(NICT) |
| Secretary | Toshihiko Nishimura(NEC) / Tomoya Tandai(Panasonic) / Fumihide Kojima(Mie Univ.) / Osamu Takyu(Tokai Univ.) / Kentaro Ishidu(NTT) / Kazuto Yano(NTT) / Keiichi Mizutani(NIigata Univ.) / Kentaro Saito / Hirokazu Sawada |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) / Mai Ohta(Fukuoka Univ.) / Taichi Ohtsuji(NEC) / WANG Xiaoyan(Ibaraki Univ.) / Akemi Tanaka(MathWorks) / Akihito Noda(Nanzan Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Radio Communication Systems / Technical Committee on Smart Radio / Technical Committee on Short Range Wireless Communications |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | MMSE Pre-cancellation Matrix Switching for BP MIMO Detection in Overloaded MIMO Systems |
| Sub Title (in English) | |
| Keyword(1) | BP |
| Keyword(2) | MMSE |
| Keyword(3) | Overloaded MIMO Detection |
| 1st Author's Name | Takashi Imamura |
| 1st Author's Affiliation | Keio University(Keio Univ) |
| 2nd Author's Name | Yukitoshi Sanada |
| 2nd Author's Affiliation | Keio University(Keio Univ) |
| Date | 2022-03-02 |
| Paper # | RCS2021-257 |
| Volume (vol) | vol.121 |
| Number (no) | RCS-391 |
| Page | pp.pp.37-42(RCS), |
| #Pages | 6 |
| Date of Issue | 2022-02-23 (RCS) |