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Paper Abstract and Keywords
Presentation 2014-06-17 16:50
Single-Carrier MU-MIMOusing Vector Perturbation
Shohei Yoshioka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2014-55
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose two new vector perturbation (VP) schemes for single-carrier (SC) multi-user (MU) multiple-input multiple-output (MIMO) downlink block transmission. The first VP scheme (SC-VP-1) adds a perturbation vector to each user’s signal block in time-domain and then, multiplies a precoding matrix to perturbation vector-added signal blocks in time-domain. The precoding matrix is derived using the channel matrix expression which is different from that of conventional VP. In order to reduce the computational complexity of perturbation vector search, a combination of QR decomposition and M algorithm is applied. On the other hand, in the second VP scheme (SC-VP-2), perturbation vector-added signal blocks are transformed into frequency-domain signal blocks, to multiply the precoding matrices in frequency-domain. In SC-VP-2, unlike from conventional VP and SC-VP-1, a time-domain expression of precoding matrix multiplication which is equivalent to frequency-domain expression is derived and then, QR decomposition and M algorithm based perturbation vector search is applied. We show, by theoretical analysis, that SC-VP-1 and SC-VP-2 are equivalent. We also show, by computer simulation, that SC-VP-1 and SC-VP-2 provide larger improvement than orthogonal frequency division multiplexing (OFDM) MU-MIMO using VP (OFDM-VP) in terms of the average bit error rate (BER) improvement from the case of linear precoding. Computational complexity is compared among SC-VP-1, SC-VP-2, and OFDM-VP.
Keyword (in Japanese) (See Japanese page) 
(in English) SC-MU-MIMO / Vector Perturbation / QR decomposition / M algorithm / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 86, RCS2014-55, pp. 131-136, June 2014.
Paper # RCS2014-55 
Date of Issue 2014-06-10 (RCS) 
ISSN Print edition: ISSN 0913-5685    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 RCS2014-55

Conference Information
Committee RCS  
Conference Date 2014-06-17 - 2014-06-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa-ken Seinenkaikan (Naha) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2014-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Single-Carrier MU-MIMOusing Vector Perturbation 
Sub Title (in English)  
Keyword(1) SC-MU-MIMO  
Keyword(2) Vector Perturbation  
Keyword(3) QR decomposition  
Keyword(4) M algorithm  
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1st Author's Name Shohei Yoshioka  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Shinya Kumagai  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
3rd Author's Name Fumiyuki Adachi  
3rd Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2014-06-17 16:50:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2014-55 
Volume (vol) vol.114 
Number (no) no.86 
Page pp.131-136 
#Pages 6 
Date of Issue 2014-06-10 (RCS) 

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