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Paper Abstract and Keywords
Presentation 2008-07-25 13:25
Statistical-Mechanics-Based Approach to Joint Channel Estimation and Multiuser Detection in DS-CDMA Channels
Keigo Takeuchi (Kyoto Univ.), Mikko Vehkaperae (NTNU), Toshiyuki Tanaka (Kyoto Univ.), Ralf R. Mueller (NTNU) SIP2008-84 WBS2008-22
Abstract (in Japanese) (See Japanese page) 
(in English) We consider multiuser detection in a randomly-spread frequency-selective block-fading DS-CDMA channel with imperfect CSI at the receiver. We evaluate upper bounds of the spectral efficiencies of two optimal multiuser detectors (MUDs) in large-system limit, by using the so-called replica method, in order to compare them with the spectral efficiency of LMMSE MUD, proposed by Evans and Tse. We find that the LMMSE MUD achieves near-optimal performance for high SNR and small system load if the length of pilot sequences is appropriately adjusted.
Keyword (in Japanese) (See Japanese page) 
(in English) direct-sequence code-division multiple-access / frequency-selective fading / multiuser detection / channel estimation / replica method / spectral efficiency / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 166, WBS2008-22, pp. 43-48, July 2008.
Paper # WBS2008-22 
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 SIP2008-84 WBS2008-22

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 WBS 
Conference Code 2008-07-SIP-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Statistical-Mechanics-Based Approach to Joint Channel Estimation and Multiuser Detection in DS-CDMA Channels 
Sub Title (in English)  
Keyword(1) direct-sequence code-division multiple-access  
Keyword(2) frequency-selective fading  
Keyword(3) multiuser detection  
Keyword(4) channel estimation  
Keyword(5) replica method  
Keyword(6) spectral efficiency  
Keyword(7)  
Keyword(8)  
1st Author's Name Keigo Takeuchi  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Mikko Vehkaperae  
2nd Author's Affiliation Norwegian University of Science and Technology (NTNU)
3rd Author's Name Toshiyuki Tanaka  
3rd Author's Affiliation Kyoto University (Kyoto Univ.)
4th Author's Name Ralf R. Mueller  
4th Author's Affiliation Norwegian University of Science and Technology (NTNU)
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Speaker Author-1 
Date Time 2008-07-25 13:25:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # SIP2008-84, WBS2008-22 
Volume (vol) vol.108 
Number (no) no.164(SIP), no.166(WBS) 
Page pp.43-48 
#Pages 6 
Date of Issue 2008-07-18 (SIP, WBS) 

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