LAUSR

In this paper, we investigate an incremental semi-blind opportunistic amplify-and-forward (AF) protocol in two-way relaying communication. This protocol is analyzed in terms of the average sum-rate and average symbol error rate considering independent Rayleigh fading channels. Bounds of these performance criteria are provided in closed-form expressions for the semi-blind and channel state information (CSI)-assisted relaying. The performance of the incremental semi-blind opportunistic AF relaying is compared to the performance of incremental CSI-assisted opportunistic AF relaying in order to prove the validity of the proposed analysis. We illustrate that the incremental semi-blind opportunistic AF relaying reduces significantly the system complexity for the cost of a slight decrease in the system performance.