Paper Abstract and Keywords |
Presentation |
2022-03-02 13:30
MMSE Pre-cancellation Matrix Switching for BP MIMO Detection in Overloaded MIMO Systems Takashi Imamura, Yukitoshi Sanada (Keio Univ) RCS2021-257 |
Abstract |
(in Japanese) |
(See Japanese page) |
(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) |
(in English) |
BP / MMSE / Overloaded MIMO Detection / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 121, no. 391, RCS2021-257, pp. 37-42, March 2022. |
Paper # |
RCS2021-257 |
Date of Issue |
2022-02-23 (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) |
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RCS2021-257 |
Conference Information |
Committee |
RCS SR SRW |
Conference Date |
2022-03-02 - 2022-03-04 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Online |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Mobile Communication Workshop |
Paper Information |
Registration To |
RCS |
Conference Code |
2022-03-RCS-SR-SRW |
Language |
Japanese |
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 |
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BP |
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MMSE |
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Overloaded MIMO Detection |
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1st Author's Name |
Takashi Imamura |
1st Author's Affiliation |
Keio University (Keio Univ) |
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Yukitoshi Sanada |
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Keio University (Keio Univ) |
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Speaker |
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Date Time |
2022-03-02 13:30:00 |
Presentation Time |
25 minutes |
Registration for |
RCS |
Paper # |
RCS2021-257 |
Volume (vol) |
vol.121 |
Number (no) |
no.391 |
Page |
pp.37-42 |
#Pages |
6 |
Date of Issue |
2022-02-23 (RCS) |
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