Reconfigurable intelligent surfaces with solar energy harvesting

In this paper, we compute the throughput of wireless communications using Reconfigurable Intelligent Surfaces (RIS) when the source harvests energy using a solar panel. Harvesting duration is also optimized to enhance the performance of wireless communications when RIS is used. We derive the statistics of the Signal to Noise Ratio (SNR). We show that the SNR is the product of a Gaussian and a chisquare random variables (r.v.). We consider solar energy harvesting for Rayleigh channels.