40 Gb/s RoFSO communication system under turbulent channel link for 5G applications

Abstract The present study involves an examination of a communication system known as radio over free space optics (RoFSO), which was designed using Optisystem ver. 20. The main purpose of this inquiry is to analyze the transmission of data at a rate of 40 Gb/s over a link distance of 2 km. The achievement was attained by the utilization of four transmission channels, each of which has the capability to send data at a rate of 10 Gb/s. The system under consideration was evaluated through varying degrees of turbulence. Two scintillation models, log-normal and gamma–gamma, were used to evaluate the proposed communication performance and include evaluating the behavior of specific wavelengths (193.1, 193.2, 193.3, and 193.4 THz) in transmitting data. This evaluation is achieved by the metrics Q-factor, bit error rate (BER), and log BER. The suggested system’s data-transfer performance improved up to a distance of 1.75 km when the scintillation (L-N) model was applied, whereas it was limited to 0.75 km when the (G-G) model was imposed. Furthermore, it is noticed that the wavelength (193.1 THz) is distinct in data transfer across the two models, followed by the wavelength (193.4 THz). RoFSO is an emerging network architecture that holds significant potential for fulfilling the envisioned requirements for the advancement of 5G systems.