Ergodic Capacity Analysis for FSO Communications with UAV-Equipped IRS in the Presence of Pointing Error

This paper proposes an intelligent reflecting surface (IRS) carried by an Unmanned Aerial Vehicle (UAV) for laser path controllable free-space optical (FSO) communication system. To quantify the physical impacts of this system, the generalized atmospheric turbulence is modelled as Gamma-Gamma distribution, and specified pointing error loss is modelled as Hoyt distribution, these channel coefficients participate in the performance assessment by form of the ergodic capacity. A closed-form expression of the asymptotic ergodic capacity is derived. Finally, the model is verified by the Monte Carlo simulation successfully.