Paper Info
Title
Secure communications in multiple amplify-and-forward relay networks with outdated channel state information.
Abstract
This paper studies the effect of outdated channel state information on relay selection for a secure amplify-and-forward relay network. In the considered system, one of the multiple amplify-and-forward relays is selected to assist the secure transmission from the source to the destination, where secure transmission may be wiretapped by multiple eavesdroppers. To enhance the system security, two relay selection criteria are considered to choose the best relay, and the selection is performed in time-varying Rayleigh block-fading channel environments. We study the effect of the outdated channel state information on the system secrecy performance by deriving the analytical secrecy outage probability as well as the asymptotic expression with main-to-eavesdropper ratio. From the asymptotic expressions, it can be found that the diversity order of the secrecy outage probability for both the criteria remains unity, regardless of the number of relays and the number of eavesdroppers. Copyright © 2015 John Wiley & Sons, Ltd.
Year
DOI
Venue
2016
10.1002/ett.2985
Trans. Emerging Telecommunications Technologies
DocType
Volume
Issue
Journal
27
4
ISSN
Citations 
PageRank 
2161-3915
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Dan Deng15011.67
Lisheng Fan275950.06
Rui Zhao300.34
Rose Qingyang Hu41702135.35