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Paper Abstract and Keywords
Presentation 2010-06-11 09:45
Time Domain Feedback Equalizer for Fast Fading Channel in OFDM with Scattered Pilot
Yutaro Nakagawa, Yukitoshi Sanada (Keio Univ.) WBS2010-8
Abstract (in Japanese) (See Japanese page) 
(in English) In this report, a new feedback equalization scheme to suppress inter-carrier interference (ICI) in an OFDM system using scattered pilot is investigated. On a fast fading
channel severe ICI occurs due to a Doppler shift and it deteriorates a bit error rate (BER) seriously because of small subcarrier spacing.
In an ISDB-T receiver the equalization is mainly processed in a frequency domain because the scattered pilot is transmitted over the subcarriers.
However, the frequency domain equalization may not suppress severe ICI in the case of the fast fading channel with a large Doppler shift.
The proposed equalization scheme uses the scattered pilot symbols transformed in a time domain as the reference signal for feedback taps.
Numerical results through computer simulation show that the proposed scheme improves the BER performance especially with low carrier-to-noise ratio (CNR) conditions.
Keyword (in Japanese) (See Japanese page) 
(in English) OFDM / ISDB-T / Scattered Pilot / ICI / Doppler Shift / Feedback Equalizer / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 72, WBS2010-8, pp. 41-45, June 2010.
Paper # WBS2010-8 
Date of Issue 2010-06-03 (WBS) 
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 WBS2010-8

Conference Information
Committee WBS SAT  
Conference Date 2010-06-10 - 2010-06-11 
Place (in Japanese) (See Japanese page) 
Place (in English) Okinawa-ken-Seinen-Kaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To WBS 
Conference Code 2010-06-WBS-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Time Domain Feedback Equalizer for Fast Fading Channel in OFDM with Scattered Pilot 
Sub Title (in English)  
Keyword(1) OFDM  
Keyword(2) ISDB-T  
Keyword(3) Scattered Pilot  
Keyword(4) ICI  
Keyword(5) Doppler Shift  
Keyword(6) Feedback Equalizer  
Keyword(7)  
Keyword(8)  
1st Author's Name Yutaro Nakagawa  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Yukitoshi Sanada  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2010-06-11 09:45:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # WBS2010-8 
Volume (vol) vol.110 
Number (no) no.72 
Page pp.41-45 
#Pages 5 
Date of Issue 2010-06-03 (WBS) 

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