Statistical Characterization Of A 3-D Propagation Model For V2v Channels In Rectangular Tunnels

In this letter, we investigate the statistical characterization of a 3-D propagation model for multiple-input-multiple-output vehicle-to-vehicle (V2V) communications inside a rectangular tunnel under nonisotropic scattering conditions. The proposed model captures the spatial, temporal, and the frequency statistical distributions of the received multipath signals. A generalized analytical expression is derived for the space-time-frequency correlation function and thoroughly investigated. We analyze the impact of various model parameters, including antenna element spacing and tunnel width, on the V2V channel statistics.