On the 3-D MIMO channel model based on regular-shaped geometry-based stochastic model

This paper proposes a novel three-dimension multiple-input multiple-output (MIMO) channel model based on Regular-Shaped Geometry-Based Stochastic Model (RS-GBSM), which is called Geometrical Multi-Ellipsoid Based Stochastic Model (GMEBSM). Scatterers are assumed to be distributed on the surface of the ellipsoids whose foci are at the center of transmitter and receiver ends. Ellipsoids with different propagation delays are assumed to obey exponential distribution. By using the von Mises Fisher (VMF) distribution, the proposed model has the ability to jointly consider the azimuth and elevation angles. Assuming in 3-D non-isotropic scatting model, the expression for the space-time correlation function (STCF) between each two sub channels is derived. Finally, simulation results of the derived CF are presented.