On the performance of full-duplex relaying under fading loop interference channel

This paper addresses an AF-based cooperative network with full-duplex relaying under fading loop interference channel, by selecting the optimal relay among the relay candidates. It is assumed that the system adopts uniform power allocation. We derive closed-form expressions for the end-to-end capacity with different average signal-to-noise-ratio(SNR) in the loop interference channel. In particular, we evaluate the loop interference threshold value, below which the full-duplex mode demonstrates better performance than the half-duplex mode. The simulation results indicate that the full-duplex mode outperforms the half-duplex mode in terms of capacity if the SNR in the loop interference channel within a range of interest. Therefore, the spectral efficiency is improved as well as the link performance in the wireless system.