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Paper Abstract and Keywords
Presentation 2011-11-16 14:55
Optimization of MIMO Antenna Directivities and Derivation of Current Distributions by Using Spherical Mode Expansion
Maki Arai, Kei Sakaguchi, Kiyomichi Araki (Tokyo Inst. of Tech.), Yoshio Koyanagi, Takayuki Sotoyama (Panasonic Mobile Communications) AP2011-99
Abstract (in Japanese) (See Japanese page) 
(in English) This paper proposes a new design method based on spherical mode expansion
to optimize MIMO antenna directivities
and to derive current distributions for optimal antenna directivities.
Antenna directivities are expanded by spherical wave functions and spherical mode coefficients,
where the number of spherical mode is limited by the given antenna volume.
In this paper, we derive the optimal antenna directivities to maximize average channel capacity
given the antenna volume and angular profile of the environment.
Furthermore, we also derive the current distributions for the optimal antenna directivities
, where the current distributions are expanded by orthogonal basis functions and coefficients
based on a Galerkin method.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / directivity / current distribution / spherical mode expansion / angular profile / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 288, AP2011-99, pp. 57-62, Nov. 2011.
Paper # AP2011-99 
Date of Issue 2011-11-09 (AP) 
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 AP2011-99

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) Optimization of MIMO Antenna Directivities and Derivation of Current Distributions by Using Spherical Mode Expansion 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) directivity  
Keyword(3) current distribution  
Keyword(4) spherical mode expansion  
Keyword(5) angular profile  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Maki Arai  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
2nd Author's Name Kei Sakaguchi  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
3rd Author's Name Kiyomichi Araki  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
4th Author's Name Yoshio Koyanagi  
4th Author's Affiliation Panasonic Mobile Communications Co., Ltd. (Panasonic Mobile Communications)
5th Author's Name Takayuki Sotoyama  
5th Author's Affiliation Panasonic Mobile Communications Co., Ltd. (Panasonic Mobile Communications)
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Speaker Author-1 
Date Time 2011-11-16 14:55:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2011-99 
Volume (vol) vol.111 
Number (no) no.288 
Page pp.57-62 
#Pages 6 
Date of Issue 2011-11-09 (AP) 

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