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Paper Abstract and Keywords
Presentation 2022-03-02 10:25
Random-Phase based Physical-Layer Security Scheme Robust against Time-Variant MIMO Channels
Yurika Matsumoto, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech) RCS2021-252
Abstract (in Japanese) (See Japanese page) 
(in English) As conventional physical layer security schemes for wireless communications, artificial noise (AN) and artificial fast fading (AFF) suffer from significant increase in the transmit power. To drastically reduce the amount of the transmit power, the random phase (RP) has been proposed. RP randomly sets the phase of each transmitted signal, and controls the amplitude using channel state information (CSI), so that it can minimize the transmit power under the constraint that the legitimate receiver should correctly receive the desired signal. Due to the channel reciprocity of the time division duplex (TDD), the RP transmitter can estimate the CSI of the downlink, which should be equal to that of the uplink. When the channel is time variant, however, a large difference between the estimated and true values of CSI at the transmission timing can deteriorate the transmission performance of the legitimate receiver. To alleviate the degradation, this report firstly introduces channel prediction schemes into the RP transmitter. Furthermore, RP is extended from MISO (Multiple-Input Single-Output) to MIMO (Multiple-Input Multiple-Output), whereas both compensation techniques for the channel prediction error and receive diversity combining are employed by the legitimate receiver. Computer simulations demonstrate that the channel prediction by the transmitter and the compensation for the channel prediction error on the receiver side can improve the average block error rate (BLER) performance more significantly than the conventional RP.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO / physical layer security scheme / random phase / channel prediction / iterative reception processing / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 391, RCS2021-252, pp. 7-12, March 2022.
Paper # RCS2021-252 
Date of Issue 2022-02-23 (RCS) 
ISSN 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 RCS2021-252

Conference Information
Committee RCS SR SRW  
Conference Date 2022-03-02 - 2022-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2022-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Random-Phase based Physical-Layer Security Scheme Robust against Time-Variant MIMO Channels 
Sub Title (in English)  
Keyword(1) MIMO  
Keyword(2) physical layer security scheme  
Keyword(3) random phase  
Keyword(4) channel prediction  
Keyword(5) iterative reception processing  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Yurika Matsumoto  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Yuyuan Chang  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Kazuhiko Fukawa  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2022-03-02 10:25:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2021-252 
Volume (vol) vol.121 
Number (no) no.391 
Page pp.7-12 
#Pages 6 
Date of Issue 2022-02-23 (RCS) 

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