Hybrid Relay and OIRS-Aided Free Space Optical Communication System with Distributed Computing

In order to simultaneously solve the problems of beam diffusion and occlusion in long-distance free space optics (FSO) transmission, a hybrid relay and OIRS-aided FSO communication system with distributed computing is proposed in this paper. In the front-end link, the base station sends optical signals to the optical relay. The signal is forwarded to the OIRS after being collimated and amplified by the optical relay, and then transmitted to the user after being reflected by the OIRS. we derive closed-form solutions of the system’s precise outage probability, asymptotic outage probability and BER by jointly considering optical relay gain, OIRS physical model, pointing error, atmospheric turbulence, atmospheric absorption, etc. Based on theoretical analysis and simulation results, the system’s parameter settings have been discussed.