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Paper Abstract and Keywords
Presentation 2006-04-21 09:40
A Precise Estimation of Unknown Weight Vector Subspace for for Multi-target Constant Modulus Algorithm
Yosuke Fujino, Daisei Uchida, Osamu Kagami, Kazuji Watanabe (NTT) RCS2006-3
Abstract (in Japanese) (See Japanese page) 
(in English) Multi-target Constant Modulus Algorithm has been known as a method for blindly separating multiple co-channel signals by an antenna array. This conventional method sequentially estimates the weight vector of each user under a subspace constraint based on the orthogonality of array output signals. However, when the number of co-channel signals exceeds the number of antenna or SNR is low, the estimation performance degrades due to loss of the orthogonality. In order to this problem, we propose a new subspace estimation method based on characteristics of signal covariance matrix, which is independent of the orthogonality. Computer simulation results show that the proposed method offers higher SINR than the conventional one, and SINR of proposed method close to that of MMSE.
Keyword (in Japanese) (See Japanese page) 
(in English) multiuser detection / adaptive array / blind algorithm / Constant Modulus Algorithm / Multi-target CMA / / /  
Reference Info. IEICE Tech. Rep., vol. 106, no. 25, RCS2006-3, pp. 13-18, April 2006.
Paper # RCS2006-3 
Date of Issue 2006-04-14 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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 RCS2006-3

Conference Information
Committee RCS  
Conference Date 2006-04-21 - 2006-04-21 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka Univ. Nakanoshima Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To RCS 
Conference Code 2006-04-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Precise Estimation of Unknown Weight Vector Subspace for for Multi-target Constant Modulus Algorithm 
Sub Title (in English)  
Keyword(1) multiuser detection  
Keyword(2) adaptive array  
Keyword(3) blind algorithm  
Keyword(4) Constant Modulus Algorithm  
Keyword(5) Multi-target CMA  
1st Author's Name Yosuke Fujino  
1st Author's Affiliation NTT Corporation (NTT)
2nd Author's Name Daisei Uchida  
2nd Author's Affiliation NTT Corporation (NTT)
3rd Author's Name Osamu Kagami  
3rd Author's Affiliation NTT Corporation (NTT)
4th Author's Name Kazuji Watanabe  
4th Author's Affiliation NTT Corporation (NTT)
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Date Time 2006-04-21 09:40:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2006-3 
Volume (vol) IEICE-106 
Number (no) no.25 
Page pp.13-18 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2006-04-14 

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