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Paper Abstract and Keywords
Presentation 2016-03-02 17:20
A Lower Bound on Secrecy Capacity for MIMO Wiretap Channel Aided by a Cooperative Jammer with Channel Estimation Error
Shunya Iwata, Tomoaki Ohtsuki (Keio Univ.) RCS2015-360
Abstract (in Japanese) (See Japanese page) 
(in English) We consider a multiple-input multiple-output (MIMO) wiretap channel with one transmitter, one receiver, one cooperative jammer, and one eavesdropper, where each node equips with multiple antennas. Eigenbeam-space division multiplexing (E-SDM) and cooperative jamming are known as techniques for improving secrecy rate. E-SDM enables the transmitter and the legitimate receiver to communicate with each other in parallel using channel state information (CSI) known to them to maximize the legitimate receiver's mutual information. On the other hand, cooperative jamming is to jam only the eavesdropper to degrade an eavesdropper's mutual information. However, co-channel interference and residual interference from the cooperative jammer are caused by channel estimation error, which degrades a legitimate receiver's mutual information. In conventional report, we clarified that how these interferences affect the secrecy rate assuming that an eavesdropper receives the intended signals based on equal power allocation instead of adaptive resource allocation. In this report, assuming that Eve's received signals are based on adaptive resource allocation, we derive a lower bound on secrecy capacity using a legitimate receiver's mutual information in the presence of a channel estimation error and the mutual information of an eavesdropper who uses a minimum mean square error (MMSE) receiver. We analyze the effect of co-channel interference and residual interference from the cooperative jammer on the secrecy rate.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO wiretap channel / channel estimation error / physical layer security / cooperative jamming / secrecy rate / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 472, RCS2015-360, pp. 163-168, March 2016.
Paper # RCS2015-360 
Date of Issue 2016-02-24 (RCS) 
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 RCS2015-360

Conference Information
Committee RCS CCS SR SRW  
Conference Date 2016-03-02 - 2016-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2016-03-RCS-CCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Lower Bound on Secrecy Capacity for MIMO Wiretap Channel Aided by a Cooperative Jammer with Channel Estimation Error 
Sub Title (in English)  
Keyword(1) MIMO wiretap channel  
Keyword(2) channel estimation error  
Keyword(3) physical layer security  
Keyword(4) cooperative jamming  
Keyword(5) secrecy rate  
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1st Author's Name Shunya Iwata  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Tomoaki Ohtsuki  
2nd Author's Affiliation Keio University (Keio Univ.)
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Speaker Author-1 
Date Time 2016-03-02 17:20:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2015-360 
Volume (vol) vol.115 
Number (no) no.472 
Page pp.163-168 
#Pages 6 
Date of Issue 2016-02-24 (RCS) 

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