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Paper Abstract and Keywords
Presentation 2012-10-19 15:20
On Improvement of the ICI Canceller for OFDM Mobile DTV Receiver
Hai Minh Tran, Tomohisa Wada (Univ. of The Ryukyus) RCS2012-156
Abstract (in Japanese) (See Japanese page) 
(in English) In mobile environment, the performance of OFDM
mobile receivers is degraded severely because of Inter-Carrier-
Interference (ICI) caused by Doppler Spread. Therefore, ICI
canceller is an important task for the OFDM mobile receivers. [1]
and [2] proposed an efficient method to reduce ICI. The main
idea of this method is to linearly approximate time varying
channel within one OFDM symbol. Then a large ICI matrix
equation is given. However, in [1], [2], the estimated values of the
channel transfer function.the diagonal of the ICI matrix is
corrupted by ICI. Consequently, the equalized signal still is
distorted. In this paper, we proposed an iterative method to
improve performance of the original method. We implemented
Jacobi iteration method with low complexity to solve the large
ICI matrix equation. Next, at second iteration of Jacobi method,
we improve the diagonal by removing ICI power from pilot
symbols and re-estimating the channel transfer function.
Simulation results for ISDB-T mode 3 demonstrated that our
method could double performance of the original method under
TU-6 channel and Doppler Spread. The improvement is better
for two paths and one path Doppler channel.
Keyword (in Japanese) (See Japanese page) 
(in English) OFDM / Jacobi Iteration / Inter-Carrier-Iterference / / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 239, RCS2012-156, pp. 179-184, Oct. 2012.
Paper # RCS2012-156 
Date of Issue 2012-10-10 (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 RCS2012-156

Conference Information
Committee SR AN USN RCS  
Conference Date 2012-10-17 - 2012-10-19 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) wireless distributed network, general topics 
Paper Information
Registration To RCS 
Conference Code 2012-10-SR-AN-USN-RCS 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On Improvement of the ICI Canceller for OFDM Mobile DTV Receiver 
Sub Title (in English)  
Keyword(1) OFDM  
Keyword(2) Jacobi Iteration  
Keyword(3) Inter-Carrier-Iterference  
1st Author's Name Hai Minh Tran  
1st Author's Affiliation University of The Ryukyus (Univ. of The Ryukyus)
2nd Author's Name Tomohisa Wada  
2nd Author's Affiliation University of The Ryukyus (Univ. of The Ryukyus)
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Speaker Author-1 
Date Time 2012-10-19 15:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2012-156 
Volume (vol) vol.112 
Number (no) no.239 
Page pp.179-184 
Date of Issue 2012-10-10 (RCS) 

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