Impulse response modeling for general underwater wireless optical MIMO links

In underwater wireless optical communications (UWOC), channel modeling plays a key role in investigating the propagation properties of light beams through UWOC links as well as evaluating overall system performance. We consider UWOC multiple-input and multiple-output (MIMO) systems with multiple light sources and detectors, and focus on the impulse response that is capable of characterizing the temporal behavior of UWOC links. We propose a weighted Gamma function polynomial (WGFP) to model the impulse response of general UWOC MIMO links with arbitrary numbers of light sources and detectors. Numerical results of Monte Carlo simulations have validated the proposed WGFP model in a turbid water environment.