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Paper Abstract and Keywords
Presentation 2008-08-28 10:50
A Study on Iterative Channel Estimation for Dynamic Spectrum Control based Single Carrier Transmission
Masaomi Kawashita, Shinsuke Ibi, Seiichi Sampei (Osaka Univ.) RCS2008-75
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes an iterative channel estimation in frequency domain for a dynamic spectrum control based single carrier transmission. To accurately and efficiently estimate long channel impulse response given by the composite of the actual delay profile and delay profile by the spectrum selection in the dynamic spectrum control, the proposed scheme employs an iterative type frequency domain channel estimation scheme in which the received signal is divided by the expected symbol sequence fed from the channel decoder in the frequency domain to obtain tentative estimates of the channel frequency response, and equalizer, channel decoder and channel estimation are repeated based on turbo principle. One of the problems for the frequency domain channel estimation using the expected symbol sequence is that power spectrum density for the expected symbol sequence is not uniform, thereby accuracy of the estimated frequency transfer function is different frequency by frequency. To overcome this problem, the proposed channel estimation also includes an averaging process in which the estimated channel frequency response is averaged over plural subframes. Computer simulation based on extrinsic information transfer (EXIT) analysis confirms that the proposed scheme is effective in accurate and efficient estimate of the channel frequency response for the turbo equalizer.
Keyword (in Japanese) (See Japanese page) 
(in English) Channel estimation / Iterative processing / Turbo equalization / EXIT analysis / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 188, RCS2008-75, pp. 133-138, Aug. 2008.
Paper # RCS2008-75 
Date of Issue 2008-08-20 (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)
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Conference Information
Committee RCS  
Conference Date 2008-08-27 - 2008-08-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Hokkaido University 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2008-08-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Iterative Channel Estimation for Dynamic Spectrum Control based Single Carrier Transmission 
Sub Title (in English)  
Keyword(1) Channel estimation  
Keyword(2) Iterative processing  
Keyword(3) Turbo equalization  
Keyword(4) EXIT analysis  
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1st Author's Name Masaomi Kawashita  
1st Author's Affiliation Osaka University (Osaka Univ.)
2nd Author's Name Shinsuke Ibi  
2nd Author's Affiliation Osaka University (Osaka Univ.)
3rd Author's Name Seiichi Sampei  
3rd Author's Affiliation Osaka University (Osaka Univ.)
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Speaker Author-1 
Date Time 2008-08-28 10:50:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2008-75 
Volume (vol) vol.108 
Number (no) no.188 
Page pp.133-138 
#Pages 6 
Date of Issue 2008-08-20 (RCS) 

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