Research Article
Relay Self-Selection for Secure Cooperative in Amplify-and-Forward Networks
@INPROCEEDINGS{10.1109/ChinaCom.2012.6417550, author={Shi Yan and Mugen Peng and Wenbo Wang and Manzoor Ahmed and Dong Liang}, title={Relay Self-Selection for Secure Cooperative in Amplify-and-Forward Networks}, proceedings={International Workshop on SON}, publisher={IEEE}, proceedings_a={SON}, year={2012}, month={10}, keywords={cooperative network secure communications amplify and forward relay self-selection}, doi={10.1109/ChinaCom.2012.6417550} }- Shi Yan
Mugen Peng
Wenbo Wang
Manzoor Ahmed
Dong Liang
Year: 2012
Relay Self-Selection for Secure Cooperative in Amplify-and-Forward Networks
SON
IEEE
DOI: 10.1109/ChinaCom.2012.6417550
Abstract
Cooperative communication in wireless relay systems can improve the physical layer security, and the relay selection has great impacts on the security performances. In this paper the relay selection in Amplify and Forward (AF) cooperative networks is investigated. The system model constitutes of a source, an eavesdropper, a destination, and a number of intermediate nodes with secrecy constraints. The proposed optimal selection (OS) scheme is based on the instantaneous channel state information (CSI) of two hops, jointly protects the target destination against eavesdropping and interference. To simplify the complexity of OS, the suboptimal selection (SS) scheme is also presented, which is based on the instantaneous of the first hop and the statistical CSI of the second hop respectively. The secrecy capacity and secrecy outage probability of these two relay selection schemes are analyzed. Simulation results of OS and SS validate our theoretical analysis and show enhancement in the secrecy rate over the direct transmission.