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Paper Abstract and Keywords
Presentation 2011-11-16 09:45
A Consideration on 2D DOA Estimation Using Non-Searching EM and SAGE Algorithms with Hexagonal Antenna Array
Ryota Ishizaki, Nobuyoshi Kikuma, Hiroshi Hirayama, Kunio Sakakibara (Nagoya Inst. of Tech.) AP2011-90
Abstract (in Japanese) (See Japanese page) 
(in English) It is important to understand the radio wave propagation structures in mobile or wireless communications. One of useful methods for the purpose is high-resolution DOA estimation using an array antenna. Recently, DOA estimation using EM algorithm based on the maximum-likelihood (ML) approach receives much attention. It is because the EM algorithm remains stable in scenarios involving coherent signals and low SNR. However, the ML approach generally has the high computational complexity caused by optimization of the likelihood function. As is often the case with 2D DOA estimation, increased estimation parameters require too much computation time. In this paper, we apply 2D ESPRIT to the EM and SAGE algorithms for the reduction of computation time in 2D DOA estimation with a uniform hexagonal antenna array. Through computer simulation, we show that the proposed non-searching methods provide improved performance in terms of computation time and estimation accuracy.
Keyword (in Japanese) (See Japanese page) 
(in English) 2D DOA estimation / Hexagonal array / EM / SAGE / 2D ESPRIT / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 288, AP2011-90, pp. 7-12, Nov. 2011.
Paper # AP2011-90 
Date of Issue 2011-11-09 (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)
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Conference Information
Committee AP RCS  
Conference Date 2011-11-16 - 2011-11-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya Congress Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceller, MIMO, Wireless Communication Systems, etc. 
Paper Information
Registration To AP 
Conference Code 2011-11-AP-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Consideration on 2D DOA Estimation Using Non-Searching EM and SAGE Algorithms with Hexagonal Antenna Array 
Sub Title (in English)  
Keyword(1) 2D DOA estimation  
Keyword(2) Hexagonal array  
Keyword(3) EM  
Keyword(4) SAGE  
Keyword(5) 2D ESPRIT  
1st Author's Name Ryota Ishizaki  
1st Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
2nd Author's Name Nobuyoshi Kikuma  
2nd Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
3rd Author's Name Hiroshi Hirayama  
3rd Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
4th Author's Name Kunio Sakakibara  
4th Author's Affiliation Nagoya Institute of Technology (Nagoya Inst. of Tech.)
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Date Time 2011-11-16 09:45:00 
Presentation Time 25 
Registration for AP 
Paper # IEICE-AP2011-90 
Volume (vol) IEICE-111 
Number (no) no.288 
Page pp.7-12 
#Pages IEICE-6 
Date of Issue IEICE-AP-2011-11-09 

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