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Paper Abstract and Keywords
Presentation 2010-10-29 11:20
On Capacity Improvement of 2x2 LOS-MIMO using Reflectors
Jiyun Shen, Yasuhiro Oda, Tatsuo Furuno, Tamami Maruyama, Tomoyuki Ohya (NTT DOCOMO) RCS2010-133
Abstract (in Japanese) (See Japanese page) 
(in English) As for the MIMO (Multiple-Input Multiple-Output) transmission scheme, high attention has be paid to the frequency utilization efficiency as an excellent wireless communication system in the multipath propagation channel. However, because the direct wave becomes predominant in the LOS (Line-Of-Sight) propagation channel, there is almost no independent variation of the signals, the signal separation at the MIMO receiver becomes very difficult. Therefore, MIMO in the LOS channel (LOS-MIMO) is known as the remarkable degradation of the channel capacity. In this report, the effect of the channel capacity improvement of LOS-MIMO is examined by setting up the reflector that reflects the signals on the pure LOS channel. The effect of the reflector is clarified by the eigenvalue analysis of 2x2 LOS-MIMO, and the channel capacity increasement is also shown in addition by the computer simulation.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / Line-Of-Sight (LOS) / Reflector / Eigenvalue / Condition Number / Capacity / /  
Reference Info. IEICE Tech. Rep., vol. 110, no. 251, RCS2010-133, pp. 169-174, Oct. 2010.
Paper # RCS2010-133 
Date of Issue 2010-10-20 (RCS) 
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)
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Conference Information
Committee AN USN SR RCS  
Conference Date 2010-10-27 - 2010-10-29 
Place (in Japanese) (See Japanese page) 
Place (in English) Osaka University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Wireless distributed network, etc. 
Paper Information
Registration To RCS 
Conference Code 2010-10-AN-USN-SR-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On Capacity Improvement of 2x2 LOS-MIMO using Reflectors 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) Line-Of-Sight (LOS)  
Keyword(3) Reflector  
Keyword(4) Eigenvalue  
Keyword(5) Condition Number  
Keyword(6) Capacity  
1st Author's Name Jiyun Shen  
1st Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
2nd Author's Name Yasuhiro Oda  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
3rd Author's Name Tatsuo Furuno  
3rd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
4th Author's Name Tamami Maruyama  
4th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
5th Author's Name Tomoyuki Ohya  
5th Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
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Date Time 2010-10-29 11:20:00 
Presentation Time 20 
Registration for RCS 
Paper # IEICE-RCS2010-133 
Volume (vol) IEICE-110 
Number (no) no.251 
Page pp.169-174 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2010-10-20 

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