| Presentation | 2020-06-24 Low Complexity Signal Detection based on Belief Propagation with MMSE Pre-cancellation for 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 paper, the application of minimum mean square error (MMSE) pre-cancellation prior to belief propagation (BP) is proposed as a detection scheme for overloaded multiple-input multiple-output (MIMO). In overloaded MIMO, the loops in a factor graph deteriorate the demodulation performance with BP. Therefore, the proposed scheme applies the MMSE pre-cancellation prior to BP and reduces the number of the loops. Furthermore, it is applied to the selected transmit and receive nodes so that the condition number of an inverse matrix in the MMSE weight matrix is minimized in order to suppress the residual interference and the noise after the MMSE pre-cancellation. It is shown by numerical results obtained through computer simulation that the proposed scheme achieves better bit error rate (BER) performance than BP without the MMSE pre-cancellation. The proposed scheme improves the BER performance by 4.6-5.0 dB at a BER of $5.0times{10^{-3}}$ as compared with conventional BP. Numerical results also shows that the MMSE pre-cancellation reduces the complexity in BP by a factor of $1/896$ in terms of the number of multiplication operations. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | BP / MMSE / overloaded MIMO detection |
| Paper # | RCS2020-57 |
| Date of Issue | 2020-06-17 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2020/6/24(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | First Presentation in IEICE Technical Committee, Resource Control, Scheduling, Wireless Communications, etc. |
| Chair | Eiji Okamoto(Nagoya Inst. of Tech.) |
| Vice Chair | Fumiaki Maehara(Waseda Univ.) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) |
| Secretary | Fumiaki Maehara(Kyushu Univ.) / Toshihiko Nishimura(NEC) / Tomoya Tandai |
| Assistant | Koichi Adachi(Univ. of Electro-Comm.) / Osamu Nakamura(Sharp) / Manabu Sakai(Mitsubishi Electric) / Masashi Iwabuchi(NTT) / Tatsuki Okuyama(NTT DOCOMO) |
| 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) | Low Complexity Signal Detection based on Belief Propagation with MMSE Pre-cancellation for 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 | 2020-06-24 |
| Paper # | RCS2020-57 |
| Volume (vol) | vol.120 |
| Number (no) | RCS-74 |
| Page | pp.pp.205-210(RCS), |
| #Pages | 6 |
| Date of Issue | 2020-06-17 (RCS) |