Outage Performance of Hybrid Satellite-Aerial-Terrestrial Networks in the Presence of Interference

In this paper, we consider a hybrid satellite-aerial-terrestrial network (HSATN) where the dual-hop communication from a satellite to ground user equipment (UE) is aided by a static aerial relay in the presence of interference. Specifically, we consider multiple high altitude platforms (HAPs) located in a 3-dimensional spherical sector above the surface of earth as interferers to the aerial relay. Further, we consider a single low altitude platform (LAP) located in a cylindrical terrestrial small cell to which act as an interferer to ground UE. By assuming the shadowed-Rician fading for satellite/HAPs links, the Rician fading for aerial relay link, and Nakagami-m fading for LAP link, we derive the outage probability (OP) of first and second hops as well as the end-to-end satellite to ground UE transmissions. Further, we depict the impact of underlying system parameters on the OP of considered HSATN. We verify our analytical results through simulations.