A Geometry-based 3D Non-stationary UAV-MIMO Channel Model Allowing 3D Arbitrary Trajectories

Unmanned Aerial Vehicles (UAVs) are considered as a promising platform providing high-speed wireless communications services. In this paper, we propose a new three-dimensional (3D) non-stationary geometry-based stochastic channel model (GSCM) for the multi-input multi-output (MIMO) communication links between the UAV and the mobile terminal (MT). The proposed GSCM considers not only the 3D scattering scenario, but also the 3D arbitrary trajectories and 3D antenna arrays of both terminals. The computation methods of time evolving channel parameters, i.e., path number, delays, powers and angle parameters, are also given. In addition, the theoretical statistical properties of the proposed GSCM, i.e., the autocorrelation function (ACE), the cross-correlation function (CCF) and the Doppler power spectrum density (DPSD) are analyzed and derived. The good agreement between the simulated results and corresponding theoretical ones shows the correctness of both the simulation and the derivation.