Performance analysis of RIS-Assisted wireless networks in the presence of imperfect phase errors

In this article, an analysis of the average symbol error probability (ASEP) for a reconfigurable intelligent surface (RIS)-assisted wireless network with imperfect phase noise errors is proposed. In particular, we focus on a RISassisted wireless transmission in which imperfect phase errors are modeled by the Tikhonov distribution. The source (S) and destination (D) nodes are equipped with a single antenna, and the channels between the S-RIS and RIS-D nodes exhibit Rayleigh fading which is a good fit for the non-line-of-sight instances. For this system, we derive novel and exact analytical and asymptotic expressions for the ASEP, and the obtained ASEP expressions are then exploited to evaluate the error performance of under different network configurations. The proposed theoretical analysis is confirmed through the exact simulation results.