Performance Evaluation of Underwater Visible Light Communication System for Strong Oceanic Turbulence Channel

In future generation to enhance the capacity of underwater wireless channel, Underwater visible light communication (UVLC) develops as a promising technique. In this paper, the performance of vertical UVLC link is investigated in the presence of strong oceanic turbulence conditions using probability density function of Gamma-Gamma model. Main technical issue with moving UVLC system is directing, tracking and acquisition. In addition, refractive index also changes vertically as oceanic depth affects variance of turbulence-induced fading. On considering these variations depending on depths of ocean, we develop statistically strong oceanic turbulence channel model based on the fading coefficient of gamma-gamma model. The effect of using Gamma-Gamma model for strong oceanic turbulence condition is investigated on the bit-error rate, signal-to-noise ratio, communication link distance.