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Paper Abstract and Keywords
Presentation 2022-08-25 11:40
Random Phase based Physical Layer Security Scheme Robust against Multi-antenna Eavesdroppers
Meng YAN, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech) RCS2022-104
Abstract (in Japanese) (See Japanese page) 
(in English) In contrast with the upper-layer security, the physical-layer security for wireless communications can repel physical layer attacks such as eavesdropping control signals. As conventional physical-layer security schemes for multi-input single-output (MISO) communications, artificial noise (AN) and artificial fast fading (AFF) need high transmit power, while random phase (RP) can reduce the power drastically. This is because RP sets phases of transmit signals randomly and estimates their amplitudes that can minimize the transmit power under the constraint of correct signal detection by the legitimate user. A major problem of these schemes is that the desired signal can be intercepted by eavesdroppers (Eves) having multiple receive antennas. Thus, this report proposes an enhanced version of RP that multiplies the desired complex symbols by random patterns so that Eve with multiple antennas cannot detect the desired symbols even by employing diversity combining with blind algorithms. The above multiplication changes the statistical property of the desired symbol, which can destroy the basis of the blind estimation of the diversity combining weights and thus can hinder the blind diversity combining. Computer simulations of MISO QPSK demonstrate that the proposed scheme can prohibit Eve performing the blind diversity combining from detecting the desired symbols much more strictly than the conventional RP, while maintaining good transmission performance of the legitimate receiver.
Keyword (in Japanese) (See Japanese page) 
(in English) MISO / physical layer security / random phase / random pattern / diversity combining / blind estimation / /  
Reference Info. IEICE Tech. Rep., vol. 122, no. 164, RCS2022-104, pp. 42-47, Aug. 2022.
Paper # RCS2022-104 
Date of Issue 2022-08-18 (RCS) 
ISSN 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 SAT RCS  
Conference Date 2022-08-25 - 2022-08-26 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To RCS 
Conference Code 2022-08-SAT-RCS 
Language English (Japanese title is available) 
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 Multi-antenna Eavesdroppers 
Sub Title (in English)  
Keyword(1) MISO  
Keyword(2) physical layer security  
Keyword(3) random phase  
Keyword(4) random pattern  
Keyword(5) diversity combining  
Keyword(6) blind estimation  
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Keyword(8)  
1st Author's Name Meng YAN  
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 2022-08-25 11:40:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2022-104 
Volume (vol) vol.122 
Number (no) no.164 
Page pp.42-47 
#Pages
Date of Issue 2022-08-18 (RCS) 


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