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Paper Abstract and Keywords
Presentation 2008-02-01 13:40
Non-Uniqueness of Global Solution to Stochastic ML Estimation of DOA
Haihua Chen, Masakiyo Suzuki (Kitami Inst. Tech.) CAS2007-101
Abstract (in Japanese) (See Japanese page) 
(in English) This paper addresses the issue of non-uniqueness or ambiguity of global solutions to Stochastic
Maximum Likelihood (SML) estimation for
directions-of-arrival (DOA) finding. Global search techniques for the
SML estimation fail to find DOA in many cases, unlike the
Deterministic ML (DML) estimation. This paper reveals
that its reason lies in the non-uniqueness of global solutions to the SML
estimation. Based on the idea that the SML local solution closest to
the true DOA is the most adequate for DOA
finding, we propose an algorithm which uses a local search of the SML
criterion together with the DML estimation as initialization. Finally
some simulation results are shown to demonstrate the proposed
algorithm is effective.
Keyword (in Japanese) (See Japanese page) 
(in English) DOA finding / Stochastic signal model / Deterministic signal model / ML / Non-uniqueness / / /  
Reference Info. IEICE Tech. Rep., vol. 107, no. 476, CAS2007-101, pp. 43-48, Jan. 2008.
Paper # CAS2007-101 
Date of Issue 2008-01-25 (CAS) 
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 CAS2007-101

Conference Information
Committee CAS  
Conference Date 2008-01-31 - 2008-02-01 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To CAS 
Conference Code 2008-01-CAS 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Non-Uniqueness of Global Solution to Stochastic ML Estimation of DOA 
Sub Title (in English)  
Keyword(1) DOA finding  
Keyword(2) Stochastic signal model  
Keyword(3) Deterministic signal model  
Keyword(4) ML  
Keyword(5) Non-uniqueness  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Haihua Chen  
1st Author's Affiliation Kitami Institute of Technology (Kitami Inst. Tech.)
2nd Author's Name Masakiyo Suzuki  
2nd Author's Affiliation Kitami Institute of Technology (Kitami Inst. Tech.)
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Speaker Author-1 
Date Time 2008-02-01 13:40:00 
Presentation Time 25 minutes 
Registration for CAS 
Paper # CAS2007-101 
Volume (vol) vol.107 
Number (no) no.476 
Page pp.43-48 
#Pages 6 
Date of Issue 2008-01-25 (CAS) 

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