A 3D IS-GBSM with Continuously Arbitrary Trajectory for mmWave Massive MIMO V2V Channels

In this chapter, a novel three-dimensional (3D) millimeter wave (mmWave) massive multiple-input multiple-output (MIMO) irregular-shaped geometry based stochastic model (IS-GBSM) is proposed for sixth generation (6G) vehicle-to-vehicle (V2V) channels. To support the high delay resolution in mmWave communications, rays within each cluster are resolvable. The continuously arbitrary trajectory of transceivers and dynamic clusters is captured. To model space–time–frequency (S-T-F) non-stationarity, a new method, which integrates the frequency-dependent factor, birth-death (BD) process, and selective evolution of static and dynamic clusters, is developed. Simulation results explore impacts of VTD and vehicular movement trajectory (VMT) on channel statistics. Finally, the generality of proposed IS-GBSM is validated by comparing simulation results and measurement data.