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Paper Abstract and Keywords
Presentation 2011-12-15 13:15
Improvement of Array Element Spacing in Near-field Radio Source Localization Using DOA-Matrix Method and SAGE Algorithm
Takahiro Hirano, Nobuyoshi Kikuma, Hiroshi Hirayama, Kunio Sakakibara (NIT) AP2011-120
Abstract (in Japanese) (See Japanese page) 
(in English) It is important to understand the radio wave propagation structures in mobile or indoor wireless communications. One of useful methods for the purpose is high-resolution DOA estimation using array antenna. Furthermore, for the near field sources, different signal models are required since the incident wave fronts are spherical. This paper deals with the near field DOA-Matrix method for source localization, which assumes that the distance attenuation is constant in the array antenna. This method is an ESPRIT-like method and does not need peak search. However, this algorithm requires that array element spacing is equal to or less than a quarter of wavelength, and therefore it is supposed that strong mutual coupling among array elements causes serious degradation of estimation accuracy. To solve the problem, we propose an algorithm obtained by improving the near field DOA-Matrix method, and also propose near field SAGE-DOA-Matrix method which uses the improved method in SAGE algorithm. Via computer simulation, we show that the proposed methods provide successful estimation in the case of array element spacing larger than a quarter of wavelength.
Keyword (in Japanese) (See Japanese page) 
(in English) source localization / near field / array antenna / ESPRIT / DOA-Matrix method / SAGE algorithm / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 343, AP2011-120, pp. 7-12, Dec. 2011.
Paper # AP2011-120 
Date of Issue 2011-12-08 (AP) 
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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF AP2011-120

Conference Information
Committee AP  
Conference Date 2011-12-15 - 2011-12-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Kikai-Shinko-Kaikan Bldg. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2011-12-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of Array Element Spacing in Near-field Radio Source Localization Using DOA-Matrix Method and SAGE Algorithm 
Sub Title (in English)  
Keyword(1) source localization  
Keyword(2) near field  
Keyword(3) array antenna  
Keyword(4) ESPRIT  
Keyword(5) DOA-Matrix method  
Keyword(6) SAGE algorithm  
1st Author's Name Takahiro Hirano  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Nobuyoshi Kikuma  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
3rd Author's Name Hiroshi Hirayama  
3rd Author's Affiliation Nagoya Institute of Technology (NIT)
4th Author's Name Kunio Sakakibara  
4th Author's Affiliation Nagoya Institute of Technology (NIT)
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Date Time 2011-12-15 13:15:00 
Presentation Time 25 
Registration for AP 
Paper # IEICE-AP2011-120 
Volume (vol) IEICE-111 
Number (no) no.343 
Page pp.7-12 
#Pages IEICE-6 
Date of Issue IEICE-AP-2011-12-08 

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