Outage performance of cooperative relaying systems in interference-limited environment

Cooperative relaying technology is often used as an efficient solution for improving the performance of wireless communications systems. This technology has advantage of extending the coverage and increasing throughput without using large power at the transmitter. In this paper, the outage performance of dual-hop links with partial relay selection and co-channel interferers at both relay and destination in Rayleigh fading channel is investigated. The amplify-and-forward relaying is employed with the channel state information (CSI)-assisted relays requiring the CSI from the previous hop and from all co-channel interferers at the relay. The relay selection is based only on the instantaneous signal to interference ratio from the first hop. We provide an exact closed-form expression for the outage probability of the observed system. The numerical results obtained by the analytical approach are verified by Monte-Carlo simulations. The presented results are the part of a PhD thesis.