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Paper Abstract and Keywords
Presentation 2013-08-29 13:00
Experimental Evaluation of Improving Radio-wave Propagation Environment Using Tunable Passive Repeater
Yuta Takahashi, Naoki Honma (Iwate Univ.) AP2013-62
Abstract (in Japanese) (See Japanese page) 
(in English) A tunable passive repeater comprising multiple patch antennas is placed on the wall of the shielded room to enable wireless terminals inside and outside of the shielded room, to communicate through the MIMO (Multiple-Input Multiple-Output) channel. This paper presents a method that uses a tunable passive repeater to improve indoor propagation environment. Varactor diodes are used as load impedances and attached to all patch antennas of passive repeater.

By this configuration, the passive repeater can control the phase in the channel. The MIMO channel capacity is maximized by controlling all elements individually in the passive repeater. The effectiveness of the transmit array in enhancing the MIMO channel capacity is experimentally verified. The results show that the 10 % value of MIMO channel capacity can be improved by 2.92 bits/s/Hz in indoor propagation environment, and this well supports the effectiveness of the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / channel capacity / array antenna / radiowave propagation / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 192, AP2013-62, pp. 1-6, Aug. 2013.
Paper # AP2013-62 
Date of Issue 2013-08-22 (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 AP2013-62

Conference Information
Committee AP  
Conference Date 2013-08-29 - 2013-08-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Yokosuka 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Metamatarial, Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2013-08-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental Evaluation of Improving Radio-wave Propagation Environment Using Tunable Passive Repeater 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) channel capacity  
Keyword(3) array antenna  
Keyword(4) radiowave propagation  
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Keyword(6)  
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Keyword(8)  
1st Author's Name Yuta Takahashi  
1st Author's Affiliation Iwate University (Iwate Univ.)
2nd Author's Name Naoki Honma  
2nd Author's Affiliation Iwate University (Iwate Univ.)
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Speaker Author-1 
Date Time 2013-08-29 13:00:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2013-62 
Volume (vol) vol.113 
Number (no) no.192 
Page pp.1-6 
#Pages 6 
Date of Issue 2013-08-22 (AP) 

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