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Paper Abstract and Keywords
Presentation 2021-04-22 11:20
A Study on Impact of User-side Fading Correlation on Multi-user Joint Transmit/Receive Diversity
Fumiyuki Adachi, Ryo Takahashi (Tohoku Univ.) RCS2021-3
Abstract (in Japanese) (See Japanese page) 
(in English) Multi-user joint transmit/receive diversity (JTRD) is able to perform multiuser multiplexing while achieving spatial diversity gain by utilizing spatially separated multiple antennas at transmitter and receiver. A set of transmit and receive diversity weight vectors associated with each user is a set of solutions of eigenvalue equations using the channel matrix between the transmitter and receiver. Although the base station has sufficient space to equip multiple antennas, each user has limited space and antenna separation may become close to each other, thereby experiencing correlated fading. So far, authors evaluated the link capacity achievable by multi-user JTRD in a uncorrelated Rayleigh fading environment. In this report, we will evaluate, by the Monte-Carlo numerical computation, the link capacity achievable by multi-user JTRD in a correlated Rayleigh fading environment. It is shown that as the fading correlation gets stronger, higher link capacity is achieved. This will lead to a new antenna design for mobile terminals.
Keyword (in Japanese) (See Japanese page) 
(in English) Multi-user MIMO / joint transmit-receive diversity / zero-forcing / correlated fading / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 7, RCS2021-3, pp. 11-16, April 2021.
Paper # RCS2021-3 
Date of Issue 2021-04-15 (RCS) 
ISSN 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 RCS2021-3

Conference Information
Committee RCS  
Conference Date 2021-04-22 - 2021-04-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Radio Access Technologies, Wireless Communications, etc. 
Paper Information
Registration To RCS 
Conference Code 2021-04-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Impact of User-side Fading Correlation on Multi-user Joint Transmit/Receive Diversity 
Sub Title (in English)  
Keyword(1) Multi-user MIMO  
Keyword(2) joint transmit-receive diversity  
Keyword(3) zero-forcing  
Keyword(4) correlated fading  
1st Author's Name Fumiyuki Adachi  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Ryo Takahashi  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2021-04-22 11:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2021-3 
Volume (vol) vol.121 
Number (no) no.7 
Page pp.11-16 
Date of Issue 2021-04-15 (RCS) 

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