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Paper Abstract and Keywords
Presentation 2008-07-25 09:50
A channel estimatorfor MIMO OFDM systems based on the singular-value truncation
Shigenori Kinjo (JCGA) SIP2008-79 WBS2008-17
Abstract (in Japanese) (See Japanese page) 
(in English) MIMO-OFDM receivers, which are capable of increasing the coverage and
required to attenuate the transmission power per antenna, are to receive training signals, such as pilot signals or preamble signals, for channel estimation in poor SNR conditions. This results in the degradation of the channel estimation accuracy, and causes the poor receiver performance.
When we use a long preamble as the training signal, a time domain channel estimator which estimates an impulse response of the channel by the maximum likelihood estimation (MLE) is an attractive approach because
we can effectively use the long preamble with limited length. However, expected channel estimation performance cannot be obtained when the condition number of the generalized inverse matrix in the ML algorithm is large. In order to overcome the difficulty, it is effective to apply a long preamble structure with a small condition number for the transmitters
and a singular-value truncation scheme for the receivers. In this report, we evaluate these approaches quantitatively and consider a methodology to obtain superior channel estimators.
Keyword (in Japanese) (See Japanese page) 
(in English) OFDM systems / Channel estimation / Maximum likelihood estimation / Singular-value truncation / / / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 164, SIP2008-79, pp. 13-18, July 2008.
Paper # SIP2008-79 
Date of Issue 2008-07-18 (SIP, 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 SIP2008-79 WBS2008-17

Conference Information
Committee SIP WBS  
Conference Date 2008-07-24 - 2008-07-25 
Place (in Japanese) (See Japanese page) 
Place (in English) Hiroshima Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To SIP 
Conference Code 2008-07-SIP-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A channel estimatorfor MIMO OFDM systems based on the singular-value truncation 
Sub Title (in English)  
Keyword(1) OFDM systems  
Keyword(2) Channel estimation  
Keyword(3) Maximum likelihood estimation  
Keyword(4) Singular-value truncation  
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1st Author's Name Shigenori Kinjo  
1st Author's Affiliation Japan Coast Guard Academy (JCGA)
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Speaker Author-1 
Date Time 2008-07-25 09:50:00 
Presentation Time 25 minutes 
Registration for SIP 
Paper # SIP2008-79, WBS2008-17 
Volume (vol) vol.108 
Number (no) no.164(SIP), no.166(WBS) 
Page pp.13-18 
#Pages 6 
Date of Issue 2008-07-18 (SIP, WBS) 

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