4 × 10 Gbps–20 GHz WDM-Ro-FSO under the Gamma–Gamma scintillation model

This study analyzes the efficacy of radio over free space optics (Ro-FSO) communications over an atmospheric turbulence link. Four transmission channels transmitted information at a rate of 40 GB/s. Each channel carries 10 Gbps of a 20 GHz RF signal modulated with an optical signal from an optical source with a distinct frequency over a gamma-gamma scintillation model. The data were transmitted in parallel, i.e., simultaneously, as a result of altering atmospheric turbulence intensities. Q-factor, min log BER, and eye diagram have been utilized to assess the system's efficacy. The study shows that the wavelengths used for data transmission are affected differently depending on the level of atmospheric disturbances. The simulation results recognized that the most effective wavelength for data transmission is (193,1 THz), followed by (193,4 THz).