Cooperative cognitive radio networks with the Nth best reactive DF relay and performance analysis over i.ni.d Rayleigh fading channels

摘要

This paper focuses on the outage probability and average symbol error ratio (SER) analysis for a cooperative cognitive radio network with the N~(th) best relay (CCRN-N~(th)R) based on reactive decode-and-forward (RDF) protocol. To these ends, we first obtain the exact closed-form expression for the cumulative distribution function (CDF) of the instantaneous equivalent end-to-end signal-to-interference ratio (SIR). Then, with the obtained CDF, the outage probability and average SER are achieved.