Opportunistic Secure Relay Selection for a Full-Duplex Cooperative System under Eavesdropping Attack

This paper tackles the issue of single relay selection for secure communication in a fullduplex regenerative cooperative system under attack of an eavesdropper. We propose a novel single relay selection scheme, which does not requires the instantaneous channel state information of wiretap channels, to enhance the system security level. Through simulations, we show that the proposed scheme gives a better system secrecy performance than that of the existing Max-Min counterpart.