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Paper Abstract and Keywords
Presentation 2022-01-20 14:30
A zero-forcing linear precoding scheme using QR decomposition with greedy permutation for MIMO communications
Shigenori Kinjo (JCGA), Shuichi Ohno (Osaka City Univ.) IT2021-57 SIP2021-65 RCS2021-225
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, we study a zero-forcing linear precoding (ZFLP) scheme using QR decomposition with greedy permutation, which is carried out to maximize a bit-rate, for MIMO communications. Conventional ZFLP schemes have been suffered from transmit power enhancement that is induced by the precoding operation at the transmitter. We therefore need to multiply a very small scaling factor (SF) to constrain the large transmit power within an allowed value, however the small SF results in the poor performance of receivers. In this study, we apply, so called, modified sorted QR decomposition (MSQRD), which involves greedy permutations, to generate a precoding matrix for the ZFLP. We show that the large power enhancement does not induced and the given SF becomes feasible value, and receiver performance is improved in comparison to the conventional ZFLP schemes.
Keyword (in Japanese) (See Japanese page) 
(in English) Zero-forcing / Linear precoding / MIMO communications / QR decomposition / / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 329, RCS2021-225, pp. 161-166, Jan. 2022.
Paper # RCS2021-225 
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 IT2021-57 SIP2021-65 RCS2021-225

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 zero-forcing linear precoding scheme using QR decomposition with greedy permutation for MIMO communications 
Sub Title (in English)  
Keyword(1) Zero-forcing  
Keyword(2) Linear precoding  
Keyword(3) MIMO communications  
Keyword(4) QR decomposition  
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1st Author's Name Shigenori Kinjo  
1st Author's Affiliation Japan Coast Guard Academy (JCGA)
2nd Author's Name Shuichi Ohno  
2nd Author's Affiliation Osaka City University (Osaka City Univ.)
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Speaker Author-1 
Date Time 2022-01-20 14:30:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # IT2021-57, SIP2021-65, RCS2021-225 
Volume (vol) vol.121 
Number (no) no.327(IT), no.328(SIP), no.329(RCS) 
Page pp.161-166 
#Pages 6 
Date of Issue 2022-01-13 (IT, SIP, RCS) 

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