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Paper Abstract and Keywords
Presentation 2009-01-23 15:15
A study on multi-antenna measurement system aimed at evaluation of angular dependency for transmission performance
Yoshiki Okano, Daisuke Kurita, Shin Nakamatsu, Takashi Okada (docomo) AP2008-186
Abstract (in Japanese) (See Japanese page) 
(in English) It is noted that OTA (Over-The-Air) performance of mobile terminals employing multi-antennas for a diversity and MIMO must be evaluated based on the transmission performance which reflects antenna properties of the radiation efficiency, antenna gain, and spatial correlation. In this report, we investigate a simple configurable multi-antenna measurement system that enables us to evaluate the angular dependency for OTA transmission performance under the assumption that the power angular distribution around the mobile terminal is non-uniform. We investigate the capability of approximation models comprising plane waves based on the simulation in order to handle the power angular distribution around the mobile terminal as a cluster model, and we clarify a four-wave model or a five-wave model is required for an antennas under test which have a null in the radiation pattern. We also present the availability of the multi-antenna measurement system constructed in an anechoic chamber by comparing the measured results of the received power, spatial correlation, and throughput with the simulated results for the reference antennas and notebook PC models equipped with a MIMO device.
Keyword (in Japanese) (See Japanese page) 
(in English) OTA / angular dependency / mobile terminal / transmission performance / MIMO / multi-antenna / /  
Reference Info. IEICE Tech. Rep., vol. 108, no. 386, AP2008-186, pp. 209-214, Jan. 2009.
Paper # AP2008-186 
Date of Issue 2009-01-14 (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 AP2008-186

Conference Information
Committee AP  
Conference Date 2009-01-21 - 2009-01-23 
Place (in Japanese) (See Japanese page) 
Place (in English) Fukuoka University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Etc. 
Paper Information
Registration To AP 
Conference Code 2009-01-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A study on multi-antenna measurement system aimed at evaluation of angular dependency for transmission performance 
Sub Title (in English)  
Keyword(1) OTA  
Keyword(2) angular dependency  
Keyword(3) mobile terminal  
Keyword(4) transmission performance  
Keyword(5) MIMO  
Keyword(6) multi-antenna  
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Keyword(8)  
1st Author's Name Yoshiki Okano  
1st Author's Affiliation NTT DOCOMO (docomo)
2nd Author's Name Daisuke Kurita  
2nd Author's Affiliation NTT DOCOMO (docomo)
3rd Author's Name Shin Nakamatsu  
3rd Author's Affiliation NTT DOCOMO (docomo)
4th Author's Name Takashi Okada  
4th Author's Affiliation NTT DOCOMO (docomo)
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Speaker Author-1 
Date Time 2009-01-23 15:15:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2008-186 
Volume (vol) vol.108 
Number (no) no.386 
Page pp.209-214 
#Pages 6 
Date of Issue 2009-01-14 (AP) 

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