A Spatial–Temporal Joint Channel Model for Underwater Wireless Optical Links

Abstract

In underwater wireless optical communications (UWOC), multiple scattering will affect the temporal and spatial distribution of photons, which therefore bring difficulties to the study of channel characteristics including channel modeling. In this paper, we consider the single-source UWOC links in two cases, i.e., the light source and receiving plane are aligned or misaligned, and propose a closed-form function to model the spatial–temporal joint behavior of UWOC links. Numerical results suggest that the proposed function fits well with Monte Carlo simulation results in various water environment and link distance, and can overcome the misalignment with small deviation angle.