Outage and capacity analysis between opportunistic and partial relay cooperative network with hardware impairments

Hardware impairments of physical transceivers that create distortions degrade the performance of communication. This paper analyzes the performance with different relay selections which include partial relay selection and opportunistic relay selection in amplify-and-forward (AF) cooperative network with hardware impairments. Partial relay selection is that the relay node is selected depending on the instantaneous channel information of source-relay hop. Opportunistic relay selection is that the relay node is selected depending on the whole instantaneous channel information. And, the exact closed-form expression for the outage probability and the approximate expression for the ergodic capacity of AF relaying network with hardware impairments are derived over Rayleigh fading channel, which provides a fast and efficient means to evaluate the impact of hardware impairments on the system performance. In addition, simulation results and intuitive discussions are provided to show the correctness of the analytical results.