Joint Source Relay Selection for Improving Wireless Physical Layer Security
Abstract We explore the physical layer security for a multisource multi relay wireless network in the presence of an eavesdropper, in which one of multiple sources is scheduled to send its message to a destination with the assistance of multiple decode and forward (DF) relays. One eavesdropper is considered at the receiver side, and assumed to be capable of overhearing the transmission from relays to destination. In this paper, the round robin scheduling and the joint source relay selection schemes are presented to improve the physical layer security of the multi source multi relay system, and their closedform intercept probability expressions are derived over Rayleigh fadingchannels.Numericalresultsdemonstratethattheproposed joint source relay selection scheme achieves a better performance than the traditional round robin scheduling in terms of the intercept probability.
2016 IEEE Global Communications Conference (GLOBECOM)