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Paper Abstract and Keywords
Presentation 2015-12-18 09:00
Application of Non-Linear Conjugate Gradient Algorithm in Expectation Maximization Algorithm for the Performance Improvement of Radio Channel Parameter Estimation
Yunyi Yao, Kentaro Saito, Jun-ichi Takada (Ti-Tech) MW2015-146 Link to ES Tech. Rep. Archives: MW2015-146
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, demands for high-speed and wide-band wireless communication system have been increasing significantly. MIMO transmission technologies are taking an important part in these systems and will be paid more attention in the future. However, performance of MIMO transmission highly depends on radio propagation environment and it is necessary to build an accurate MIMO channel model in order to evaluation the performance. Propagation channel parameter estimation is a big part in Ray-based MIMO channel model and its accuracy has a big influence on the model. EM/SAGE is well known as a high resolution parameter estimation algorithm but it still has a drawback of slow convergence and accuracy. This study aims at improving EM algorithm by introducing non-linear conjugate gradient method.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO channel model / EM/SAGE algorithm / NLCG method / Strong Wolfe conditons / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 372, MW2015-146, pp. 75-80, Dec. 2015.
Paper # MW2015-146 
Date of Issue 2015-12-10 (MW) 
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 MW2015-146 Link to ES Tech. Rep. Archives: MW2015-146

Conference Information
Committee MW  
Conference Date 2015-12-17 - 2015-12-18 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Univ. of Science 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Students Session / Microwave Technologies 
Paper Information
Registration To MW 
Conference Code 2015-12-MW 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Application of Non-Linear Conjugate Gradient Algorithm in Expectation Maximization Algorithm for the Performance Improvement of Radio Channel Parameter Estimation 
Sub Title (in English)  
Keyword(1) MIMO channel model  
Keyword(2) EM/SAGE algorithm  
Keyword(3) NLCG method  
Keyword(4) Strong Wolfe conditons  
1st Author's Name Yunyi Yao  
1st Author's Affiliation Tokyo Institute of Technology (Ti-Tech)
2nd Author's Name Kentaro Saito  
2nd Author's Affiliation Tokyo Institute of Technology (Ti-Tech)
3rd Author's Name Jun-ichi Takada  
3rd Author's Affiliation Tokyo Institute of Technology (Ti-Tech)
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Date Time 2015-12-18 09:00:00 
Presentation Time 25 
Registration for MW 
Paper # IEICE-MW2015-146 
Volume (vol) IEICE-115 
Number (no) no.372 
Page pp.75-80 
#Pages IEICE-6 
Date of Issue IEICE-MW-2015-12-10 

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