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| Presentation | 2022-01-21 11:20 A Study on Robust Referential AMP via Discrete Distribution Tracking for Correlated Large MIMO Signal Detection Atsunori Shimamura, Takumi Takahashi (Osaka Univ), Shinsuke Ibi (Doshisha Univ), Seiichi Sampei (Osaka Univ)  IT2021-66 SIP2021-74 RCS2021-234 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | This paper proposes a LUT-based MUD scheme imitating AMP for uplink signal detection in large MU-MIMO systems. AMP is a solid inference framework to achieve low-complexity MUD, however, when the internal processing is performed with double-precision arithmetic, increasing power consumption and large memory occupation become major obstacles to practical application as the system scale increases. To tackle this issue, we design a novel referential AMP detector that imitates the internal processing of a double-precision AMP detector by stacking many small LUT in a hierarchical manner. In the proposed method, the quantization thresholds of LUT are sequentially designed based on the discrete distribution tracking of LUT outputs at each level of the hierarchy to minimize the performance degradation owing to quantization errors. The optimization of the thresholds based on the discrete distribution is performed by the Lloyd-Max algorithm with initial values given by the k-means++ method. Numerical results demonstrate the efficacy of the proposed method in terms of the BER performance and memory usage. In addition, we show that the proposed LUT created based on uncorrelated channels can work in different communication environments, and then discuss the reason for this qualitatively. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Large MIMO detection / AMP / correlated channels / belief propagation / look-up table / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 121, no. 329, RCS2021-234, pp. 213-218, Jan. 2022. | |
| Paper # | RCS2021-234 | |
| Date of Issue | 2022-01-13 (IT, SIP, 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 | IT2021-66 SIP2021-74 RCS2021-234 |
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| Conference Information | |
| Committee | RCS SIP IT |
| Conference Date | 2022-01-20 - 2022-01-21 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2022-01-RCS-SIP-IT |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on Robust Referential AMP via Discrete Distribution Tracking for Correlated Large MIMO Signal Detection |
| Sub Title (in English) | |
| Keyword(1) | Large MIMO detection |
| Keyword(2) | AMP |
| Keyword(3) | correlated channels |
| Keyword(4) | belief propagation |
| Keyword(5) | look-up table |
| Keyword(6) | |
| Keyword(7) | |
| Keyword(8) | |
| 1st Author's Name | Atsunori Shimamura |
| 1st Author's Affiliation | Osaka University (Osaka Univ) |
| 2nd Author's Name | Takumi Takahashi |
| 2nd Author's Affiliation | Osaka University (Osaka Univ) |
| 3rd Author's Name | Shinsuke Ibi |
| 3rd Author's Affiliation | Doshisha University (Doshisha Univ) |
| 4th Author's Name | Seiichi Sampei |
| 4th Author's Affiliation | Osaka University (Osaka Univ) |
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| Speaker | Author-1 |
| Date Time | 2022-01-21 11:20:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | IT2021-66, SIP2021-74, RCS2021-234 |
| Volume (vol) | vol.121 |
| Number (no) | no.327(IT), no.328(SIP), no.329(RCS) |
| Page | pp.213-218 |
| #Pages | 6 |
| Date of Issue | 2022-01-13 (IT, SIP, RCS) |
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