Performance of interference-limited dual-hop non-regenerative relays over rayleigh fading channels

This paper studies the performance of a dual-hop non-regenerative relay fading channel in an interference-limited environment. The relay and destination nodes are corrupted by co-channel interference. New closed-form expressions for the probability density function and cumulative distribution function of the output signal-to-interference ratio are derived. Analytical expressions for the outage probability of both the channel-state-information-assisted relay and the fixed-gain relay channels are derived and the obtained numerical results are compared. Monte-Carlo simulations are performed to verify the obtained theoretical results.