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Paper Abstract and Keywords
Presentation 2015-08-17 10:20
DOA Estimation for Wideband Signals by Using Weighted Squared-TOPS
Hirotaka Hayashi, Tomoaki Ohtsuki (Keio Univ.) RCS2015-134
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, direction-of-arrival (DOA) estimation for wideband incoming waves has been received attention with the progress of Radio Frequency (RF) systems using wideband signals such as wireless communication and radar, etc. To improve degree-of-freedom (DOF) and accuracy of DOA estimation, many researches on wideband DOA estimation technique have also been proposed over several decades. Conventional wideband DOA estimators are based on the method to decompose the wideband signals into some narrowband signals using filter banks or a discrete Fourier transform. They are categorized incoherent signal subspace method (ISSM) and coherent signal subspace method (CSSM). The performance of DOA estimation using ISSM deteriorates at low signal-to-noise power ratio (SNR) and the CSSM can improve the accuracy of DOA estimation at low SNR, however it requires an initial DOA and the initial value greatly influences the accuracy. In recent year, the new DOA estimation method named Test of Orthogonality of Projected Subspaces (TOPS) has been proposed, which does not require initial value and provide better performance of DOA estimation at low SNR. In this report, we propose a new wideband DOA estimation method based on Squared-TOPS, which is the improvement method of TOPS. We also demonstrate the effectiveness of the proposed method via simulations.
Keyword (in Japanese) (See Japanese page) 
(in English) Wideband signals / Array / DOA estimation / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 181, RCS2015-134, pp. 13-18, Aug. 2015.
Paper # RCS2015-134 
Date of Issue 2015-08-10 (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)
Download PDF RCS2015-134

Conference Information
Committee RCS SAT  
Conference Date 2015-08-17 - 2015-08-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2015-08-RCS-SAT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) DOA Estimation for Wideband Signals by Using Weighted Squared-TOPS 
Sub Title (in English)  
Keyword(1) Wideband signals  
Keyword(2) Array  
Keyword(3) DOA estimation  
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1st Author's Name Hirotaka Hayashi  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Tomoaki Ohtsuki  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2015-08-17 10:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2015-134 
Volume (vol) vol.115 
Number (no) no.181 
Page pp.13-18 
#Pages 6 
Date of Issue 2015-08-10 (RCS) 

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