Outage Performance of Inter-UAVs THz-Link under Composite Fading Channels

Abstract

In this letter, outage probability of terahertz (THz) link between two unmanned aerial vehicles (UAVs) is analytically and numerically investigated. Composite fading statistical model is developed considering joint effects of multipath fading, angle of arrival (AoA), and pointing-errors. The derived expression for outage probability is used to illustrate the misleading results in case of neglecting UAV antenna orientation fluctuations. In addition, effect of antenna half power beam width (HPBW) on maximum achievable link length under constraint of threshold outage probability is numerically investigated. Derived expression is validated by comparing analytical results with Monte Carlo (MC) simulation and they show high degree of agreement.