Successful one way data communication probability of energy harvesting cognitive relay network with spatially random primary users

Abstract

In this work, we study the performance of a decode and forward relay assisted secondary user pair co-existing with a primary network under wireless energy harvesting scenario. The locations of primary transmitters and receivers are modeled using two independent Poisson point processes (PPPs). In this network model, we consider that the secondary transmitter scavenges energy from primary transmitters and transmits its data towards secondary destination via a secondary relay. The direct link between the secondary transmitter and secondary destination is assumed to be unavailable. We find an analytical expression for the probability of successful one way data communication between the secondary transmitter and secondary destination through the secondary relay considering, (i) maximum interference power constraint imposed by primary receivers, (ii) interference from primary transmitters and (iii) additive white gaussian noise. Trade-off between the benefit of energy harvesting at secondary transmitter and the adverse interference effect (both at secondary relay and destination) due to primary transmission is shown through numerical analysis. The analytical expression is validated through computer simulation.