Capacity research in cluster-based underwater wireless sensor networks based on stochastic geometry

Underwater wireless sensor networks (UWSNs) have attracted wide attention in recent years. The capacity research on it is still in the initial stage, lacking adequate performance evaluation for network construction. This paper will focus on this subject by theoretical analysis and simulation, aiming to provide some insights for the actual UWSNs construction. According to the structure features of cluster-based UWSNs and the propagation characteristics of underwater acoustic signal, with the combination of signal to interference plus noise ratio, we define some capacity performance metrics, such as outage probability and transmission capacity. Based on the theory of stochastic geometry, a network capacity analytical model used in the cluster-based UWSNs is presented. The simulation results verify the validity of the theoretical analysis, and the cause of error between theoretical and simulation results has also been clearly explained.