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Paper Abstract and Keywords
Presentation 2020-06-24 00:00
Low Complexity Signal Detection based on Belief Propagation with MMSE Pre-cancellation for Overloaded MIMO systems
Takashi Imamura, Yukitoshi Sanada (Keio Univ.) RCS2020-57
Abstract (in Japanese) (See Japanese page) 
(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) 
(in English) BP / MMSE / overloaded MIMO detection / / / / /  
Reference Info. IEICE Tech. Rep., vol. 120, no. 74, RCS2020-57, pp. 205-210, June 2020.
Paper # RCS2020-57 
Date of Issue 2020-06-17 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 RCS2020-57

Conference Information
Committee RCS  
Conference Date 2020-06-24 - 2020-06-26 
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 2020-06-RCS 
Language Japanese 
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.)
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Date Time 2020-06-24 00:00:00 
Presentation Time  
Registration for RCS 
Paper # IEICE-RCS2020-57 
Volume (vol) IEICE-120 
Number (no) no.74 
Page pp.205-210 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2020-06-17 

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