Digital simulation of underwater turbulence channel based on the Monte Carlo method

Our method, using Nikishov's spectral model, assesses weak turbulence disturbance in underwater wireless optical communication (UWOC) systems. It computes scintillation indices and generates turbulence coefficients. It simulates optical signals at the detector, determining the bit error rate (BER) via decision demodulation. Analysis reveals that the slope of the relationship curve between the receiving antenna aperture and the scintillation index is maximized to 0.0377 when the receiving antenna aperture is 18 mm. For an average BER of 1E-6, required average signal-to-noise ratios (SNRs) are 9.84, 10.21 and 13.01 dB. Comparisons reveal <4% relative error and 0.071% root -mean -square error in average BER vs. average SNR curves, validating time -domain semi -physical UWOC simulations. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement