Phan Van Ca

TL;DR: This paper evaluates outage probability of a cluster-based multi-hop protocol operating on an underlay cognitive radio (CR) mode and finds that the CCI caused by the primary operations significantly impacts on the outage performance of the secondary network.

TL;DR: This paper analyzes the tradeoff between outage probability (OP) and intercept probability (IP) for a multi‐hop relaying scheme in cognitive radio (CR) networks and considers an asymmetric fading channel model, where the secondary channels are Rician fading, while the remaining ones experience the Rayleigh fading.

TL;DR: This paper derives exact closed-form expressions of the end-to-end outage probability (OP) and intercept probability (IP) for the secondary network over double Rayleigh fading channels and simulations are presented to show the trade-off between OP and IP, and the impact of hardware imperfection, the number of hops and thenumber of primary users on the performance metrics.

TL;DR: Due to usage of the cooperative transmission, the proposed COOP protocol obtains better performance, as compared with the corresponding multi-hop relaying one (denoted DIRECT) which only uses direct transmission at each hop.

TL;DR: Three path selection methods for cluster-based cognitive radio (CR) networks for secrecy enhancement by formulating the probability of non-zero secrecy capacity (PNSC) are proposed and exact closed-form expressions for the end-to-end PNSC of the BEST, MAXV and RAND methods over Rayleigh fading channel are derived.