Outage probability of full-duplex cognitive relay networks with partial relay selection

This paper investigates the outage performance of full duplex cognitive radio networks. We consider that a dual-hop system with multiple decode-and-forward (DF) relays. We assume that there is no direct link between secondary source terminal (S) and destination (D), and self-interference exists at the relays. All the links are independent identically distributed (IID) Rayleigh distributed. In order to analysis the outage performance, the exact closed-form expression of the outage probability is derived. Then we do simulations in different conditions to corroborate our theoretical analyses. Our results show that the system outperforms when the relay (R) is close to D and P is far away S.