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| Presentation | 2021-06-23 16:35 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 (Hokkaido Univ.)  RCS2021-45 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (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) |
| (in English) | Large-scale MIMO / signal detection / Gaussian belief propagation / spatial fading correlation / LLR damping / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 72, RCS2021-45, pp. 97-102, June 2021. | |
| Paper # | RCS2021-45 | |
| Date of Issue | 2021-06-16 (RCS) | |
| ISSN | Online edition: ISSN 2432-6380 | |
| Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) | |
| Download PDF | RCS2021-45 |
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| Conference Information | |
| Committee | RCS |
| Conference Date | 2021-06-23 - 2021-06-25 |
| 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. |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2021-06-RCS |
| Language | Japanese |
| 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 |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 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.) |
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| Speaker | Author-1 |
| Date Time | 2021-06-23 16:35:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | RCS2021-45 |
| Volume (vol) | vol.121 |
| Number (no) | no.72 |
| Page | pp.97-102 |
| #Pages | 6 |
| Date of Issue | 2021-06-16 (RCS) |
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