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Paper Abstract and Keywords
Presentation 2009-11-27 10:50
Multipath Division Turbo Equalization with Block Inter-Carrier Interference Cancellation with Low Sensitivity of Residual Error Caused by Soft Replica
Katsuya Kato, Ryota Yamada, Kazuhiro Abe, Takashi Yoshimoto, Minoru Kubota, Naoki Okamoto (Sharp Corp.) RCS2009-155
Abstract (in Japanese) (See Japanese page) 
(in English) This report proposes Multipath Division turbo equalization with Block Inter-carrier interference Cancellation to suppress Inter-Symbol Interference (ISI) and Inter-Carrier Interference (ICI) caused in large delay environments. In multipath environments with delay difference greater than Guard Interval (GI) length, OFDM transmissions suffer from severe degradation due to ISI and ICI. ISI is a leak of adjacent OFDM symbols, and loss of orthogonality in the FFT window causes ICI. The proposed method exploits log likelihood ratio which is a fed back from a decoder and generates a transmitted signal replica. Using that replica, a multipath is divided into several blocks in which the maximum delay difference is limited so as not to exceed the GI length. A multipath division process eliminates a portion of desired signal alongside ISI and ICI, and residual error occurs. The proposed method avoids this error by reconstructing the lost desired signal in the frequency domain, and achieves great transmission performance. Computer simulations demonstrate the effectiveness of the proposed method in an environment with large delay spread channel.
Keyword (in Japanese) (See Japanese page) 
(in English) OFDM / Guard Interval / Inter Symbol Interference / Inter Carrier Interference / Turbo Equalization / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 305, RCS2009-155, pp. 133-138, Nov. 2009.
Paper # RCS2009-155 
Date of Issue 2009-11-19 (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 RCS2009-155

Conference Information
Committee RCS AP  
Conference Date 2009-11-26 - 2009-11-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Inst. of Tech. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceller, MIMO, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2009-11-RCS-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multipath Division Turbo Equalization with Block Inter-Carrier Interference Cancellation with Low Sensitivity of Residual Error Caused by Soft Replica 
Sub Title (in English)  
Keyword(1) OFDM  
Keyword(2) Guard Interval  
Keyword(3) Inter Symbol Interference  
Keyword(4) Inter Carrier Interference  
Keyword(5) Turbo Equalization  
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Keyword(7)  
Keyword(8)  
1st Author's Name Katsuya Kato  
1st Author's Affiliation Sharp Corporation (Sharp Corp.)
2nd Author's Name Ryota Yamada  
2nd Author's Affiliation Sharp Corporation (Sharp Corp.)
3rd Author's Name Kazuhiro Abe  
3rd Author's Affiliation Sharp Corporation (Sharp Corp.)
4th Author's Name Takashi Yoshimoto  
4th Author's Affiliation Sharp Corporation (Sharp Corp.)
5th Author's Name Minoru Kubota  
5th Author's Affiliation Sharp Corporation (Sharp Corp.)
6th Author's Name Naoki Okamoto  
6th Author's Affiliation Sharp Corporation (Sharp Corp.)
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Speaker Author-1 
Date Time 2009-11-27 10:50:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2009-155 
Volume (vol) vol.109 
Number (no) no.305 
Page pp.133-138 
#Pages 6 
Date of Issue 2009-11-19 (RCS) 

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