This paper investigates the impact of spatial channel correlation on the outage probability of intelligent reflecting surface (IRS)-assisted single-input single-output (SISO) communication systems. In particular, we derive a novel closed-form expression of the outage probability for arbitrary phase shifts and correlation matrices of the indirect channels. To shed light on the impact of the spatial correlation, we further attain the closed-form expressions for two common scenarios met in the literature when the large-scale fading coefficients are expressed by the loss over a propagation distance. Numerical results validate the tightness and effectiveness of the closed-form expressions. Furthermore, the spatial correlation offers significant decreases in the outage probability as the direct channel is blocked.
@article{arxiv.2102.11408,
title = {Outage Probability Analysis of IRS-Assisted Systems Under Spatially Correlated Channels},
author = {Trinh Van Chien and Anastasios K. Papazafeiropoulos and Lam Thanh Tu and Ribhu Chopra and Symeon Chatzinotas and Björn Ottersten},
journal= {arXiv preprint arXiv:2102.11408},
year = {2021}
}
Comments
Submitted for possible publication on January 05, 2021. Revised on April 21, 2021