| Presentation | 2021-06-23 A Study on the Behavior of LLR messages in Damped GaBP for Large-scale Signal Detection under a Correlated Channel Daniel Akira Ando, Toshihiko Nishimura, Takeo Ohgane, Yasutaka Ogawa, Junichiro Hagiwara, Takanori Sato, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | For large-scale signal detection, Gaussian Belief Propagation (GaBP) is known as a method providing a near-optimal performance with low-complexity. However, GaBP is sensitive to correlated fading channels, and therefore its detection performance degrades significantly when the correlation is high. Although node selection and damped belief improve the GaBP performance under such conditions, a bit-error-rate floor can be seen at a high signal-to-noise ratio region. In this paper, we evaluate the microscopic behavior of damped beliefs in the GaBP network under a correlated fading channel. The simulation results show that the values of transmit signals, channels, and noise determine an appropriate damping factor and that the belief's magnitude tends to be lower when the signal detection succeeds. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Large-scale MIMO / signal detection / Gaussian belief propagation / spatial fading correlation / LLR damping |
| Paper # | RCS2021-45 |
| Date of Issue | 2021-06-16 (RCS) |
| Conference Information | |
| Committee | RCS |
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| Conference Date | 2021/6/23(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 | Fumihide Kojima(NICT) / Toshihiko Nishimura(Hokkaido Univ.) / Tomoya Tandai(Toshiba) |
| Secretary | Fumihide Kojima(Panasonic) / 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) | A Study on the Behavior of LLR messages in Damped GaBP for Large-scale Signal Detection under a Correlated Channel |
| Sub Title (in English) | |
| Keyword(1) | Large-scale MIMO |
| Keyword(2) | signal detection |
| Keyword(3) | Gaussian belief propagation |
| Keyword(4) | spatial fading correlation |
| Keyword(5) | LLR damping |
| 1st Author's Name | Daniel Akira Ando |
| 1st Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 2nd Author's Name | Toshihiko Nishimura |
| 2nd Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 3rd Author's Name | Takeo Ohgane |
| 3rd Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 4th Author's Name | Yasutaka Ogawa |
| 4th Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 5th Author's Name | Junichiro Hagiwara |
| 5th Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| 6th Author's Name | Takanori Sato |
| 6th Author's Affiliation | Hokkaido University(Hokkaido Univ.) |
| Date | 2021-06-23 |
| Paper # | RCS2021-45 |
| Volume (vol) | vol.121 |
| Number (no) | RCS-72 |
| Page | pp.pp.97-102(RCS), |
| #Pages | 6 |
| Date of Issue | 2021-06-16 (RCS) |