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Paper Abstract and Keywords
Presentation 2009-11-26 09:00
User Selection Scheme with Secrecy Capacity Between Other Users in MIMO Downlink Systems
Masatoshi Yanase, Tomoaki Ohtsuki (Keio Univ.) RCS2009-133
Abstract (in Japanese) (See Japanese page) 
(in English) For multiuser Multiple-Input-Multiple-Output (MIMO) downlink systems where some receivers exist, several user selection schemes have been recently proposed. However, these user selection schemes do not take security into consideration. One possible scenario of wireless communication systems is that a transmitter wants to transmit confidential messages only to those legitimate users securely. In this report, we propose a user selection scheme with secrecy capacity for multiuser MIMO downlink system. The security level of each user is measured by the secrecy capacity of its corresponding downlink channel. In the proposed scheme, the transmitter selects a user set so that their secrecy capacities are larger than zero. Thus, the transmitter can send confidential messages to those legitimate users securely. The proposed scheme can be applied to conventional scheduling schemes, such as maximum capacity (MAX) scheduling and proportional fairness (PF) scheduling. Simulation results show that the proposed scheme improves system secrecy capacity performance and has little degradation of system capacity performance when applied to the PF scheduling schemes. Hence, we show that the proposed scheme is an effective user selection scheme to guarantee secrecy of communication.
Keyword (in Japanese) (See Japanese page) 
(in English) Multiuser MIMO / User selection / Secrecy capacity / / / / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 305, RCS2009-133, pp. 1-5, Nov. 2009.
Paper # RCS2009-133 
Date of Issue 2009-11-19 (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 RCS2009-133

Conference Information
Committee RCS AP  
Conference Date 2009-11-26 - 2009-11-27 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Inst. of Tech. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Adaptive Antenna, Equalization, Interference Canceller, MIMO, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2009-11-RCS-AP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) User Selection Scheme with Secrecy Capacity Between Other Users in MIMO Downlink Systems 
Sub Title (in English)  
Keyword(1) Multiuser MIMO  
Keyword(2) User selection  
Keyword(3) Secrecy capacity  
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1st Author's Name Masatoshi Yanase  
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 2009-11-26 09:00:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2009-133 
Volume (vol) vol.109 
Number (no) no.305 
Page pp.1-5 
#Pages 5 
Date of Issue 2009-11-19 (RCS) 

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