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Paper Abstract and Keywords
Presentation 2017-08-25 10:55
Experimental Evaluation of Self-Interference Suppression Method Using 180 Degree Hybrid Circuit in MIMO Full-Duplex System
Yoshiyuki Yamamoto (Tohoku Univ.), Riri Niizeki, Yudai Hashimoto (NIT, Sendai Collge), Naoki Honma (Iwate Univ.), Qiaowei Yuan (NIT, Sendai Collge), Quiang Chen (Tohoku Univ.) AP2017-82
Abstract (in Japanese) (See Japanese page) 
(in English) A self-interference suppression is essential for realizing the full-duplex system. We have proposed the self-interference suppression method at RF, where the end-fire-arranged Tx/Rx linear arrays combined with the multiple 180 degree-hybrids at Rx side are used. This report experimentally verifies the effect of the proposed analog-interference cancellation method. First, we present the feed network comprising the several 180 degree hybrids fabricated on a dielectric substrate. After that, we describe the experimental results of two sets of four-element-linear arrays in an anechoic chamber, where the center-to-center spacing of arrays was 3.2 m, and fabricated feed network was used at Rx side. The experimentation demonstrated the interference power is suppressed by 15 dB by the proposed method.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / full-duplex / self-interference / hybrid / / / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 181, AP2017-82, pp. 75-80, Aug. 2017.
Paper # AP2017-82 
Date of Issue 2017-08-17 (AP) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 AP  
Conference Date 2017-08-24 - 2017-08-25 
Place (in Japanese) (See Japanese page) 
Place (in English) National Institute of Technology, Hakodate College 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Antennas and Propagation 
Paper Information
Registration To AP 
Conference Code 2017-08-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Experimental Evaluation of Self-Interference Suppression Method Using 180 Degree Hybrid Circuit in MIMO Full-Duplex System 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) full-duplex  
Keyword(3) self-interference  
Keyword(4) hybrid  
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1st Author's Name Yoshiyuki Yamamoto  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Riri Niizeki  
2nd Author's Affiliation National Institute of Technology, Sendai College (NIT, Sendai Collge)
3rd Author's Name Yudai Hashimoto  
3rd Author's Affiliation National Institute of Technology, Sendai College (NIT, Sendai Collge)
4th Author's Name Naoki Honma  
4th Author's Affiliation Iwate University (Iwate Univ.)
5th Author's Name Qiaowei Yuan  
5th Author's Affiliation National Institute of Technology, Sendai College (NIT, Sendai Collge)
6th Author's Name Quiang Chen  
6th Author's Affiliation Tohoku University (Tohoku Univ.)
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Speaker Author-1 
Date Time 2017-08-25 10:55:00 
Presentation Time 25 minutes 
Registration for AP 
Paper # AP2017-82 
Volume (vol) vol.117 
Number (no) no.181 
Page pp.75-80 
#Pages
Date of Issue 2017-08-17 (AP) 


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