A Robust Receiver Comprising Turbid Water for LD-Based UOWC System

In this paper, the spatial characteristics of underwater optical wireless communication (UOWC) channel are first experimentally investigated under turbid water condition, which shows that turbid water can enlarge the light coverage area. Inspired by this property, a robust receiver comprising turbid water is then proposed to increase the link misalignment tolerance in the laser diode (LD)-based UOWC system. The experimental results demonstrate that the proposed receiver is more robust to the detector shift and rotation as compared to the traditional receiver, thus can relax the requirement of link alignment in the LD-based UOWC system.