Analysis of Scheduling Schemes in Wireless Powered Backscatter Communication Networks with Spatial Randomness

This paper studies the performance of a wireless powered backscatter communication network consisting of an exciter, several randomly distributed backscattering devices (BDs) and a receiver. We consider selection/scheduling schemes, where a BD is selected for information transmission. The proposed schemes are based on random, end-to-end (e2e) signal-to-noise ratio (SNR) and Euclidean distance. By using stochastic geometry tools, we derive analytical expressions for the outage probability of each selection scheme. Our results show that the scheme based on the e2e SNR achieves the best performance. We also present a cluster-based selection scheme and provide some simulation results. The derived analytical framework provides useful insights on the design of such networks.