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Paper Abstract and Keywords
Presentation 2014-10-16 09:30
Single-Carrier Multi-User MIMO Applying Transmit Equalization and Tomlinson-Harashima Precoding in Time-Domain
Shohei Yoshioka, Shinya Kumagai, Fumiyuki Adachi (Tohoku Univ.) RCS2014-156
Abstract (in Japanese) (See Japanese page) 
(in English) In multi-user (MU) multiple-input multiple-output (MIMO) using Tomlinson-Harashima precoding (THP), 2-step signal processing of subtracting inter-user interference (IUI) and multiplying precoding matrix for the equivalent channel matrix of a lower triangular matrix is performed at the transmitter in order to avoid IUI. For suppressing the transmit power increase due to the former processing, modulo operation is applied. A combination of THP and broadband single-carrier (SC) block transmission using transmit equalization can centralize the signal processing in the transmitter, suppress inter-symbol interference (ISI) caused by frequency-selective fading, and obtain frequency diversity gain. However in conventional SC-MU-MIMO applying transmit equalization and THP in frequency-domain (frequency-domain transmit equalization SC-THP), since IUI is independently subtracted for each frequency component and ISI is avoided using transmit frequency-domain equalization, modulo operation does not sufficiently suppress the transmit power. Subtracting both of IUI and ISI in time-domain for signal blocks is expected to bring in the large effect of applying modulo operation. In this paper, we propose SC-MU-MIMO applying transmit equalization and THP in time-domain (time-domain transmit equalization SC-THP). We show, by computer simulation, time-domain transmit equalization SC-THP provides better average bit error rate (BER) performance than frequency-domain transmit equalization SC-THP. Computational complexity is compared between time-domain transmit equalization SC-THP and frequency-domain transmit equalization SC-THP.
Keyword (in Japanese) (See Japanese page) 
(in English) SC-MU-MIMO / Tomlinson-Harashima Precoding / Transmit equalization / Time-domain precoding / / / /  
Reference Info. IEICE Tech. Rep., vol. 114, no. 254, RCS2014-156, pp. 1-6, Oct. 2014.
Paper # RCS2014-156 
Date of Issue 2014-10-09 (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)
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Conference Information
Committee RCS  
Conference Date 2014-10-16 - 2014-10-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Keio Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless Communication Schemes, Wireless Communication Systems, Wireless Standards, etc. 
Paper Information
Registration To RCS 
Conference Code 2014-10-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Single-Carrier Multi-User MIMO Applying Transmit Equalization and Tomlinson-Harashima Precoding in Time-Domain 
Sub Title (in English)  
Keyword(1) SC-MU-MIMO  
Keyword(2) Tomlinson-Harashima Precoding  
Keyword(3) Transmit equalization  
Keyword(4) Time-domain precoding  
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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Date Time 2014-10-16 09:30:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2014-156 
Volume (vol) IEICE-114 
Number (no) no.254 
Page pp.1-6 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2014-10-09 

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