A Non-Stationary Geometry-Based Channel Model for Vehicle-to- Vehicle Communications in Tunnel Environments

In the framework of the fifth generation (5G) wireless network, vehicle-to-vehicle(V2V) communication in tunnel scenarios has received more and more interests. In the article, a three-dimension (3D) geometry-based channel model (GBSM) is proposed. By considering the scattering of tunnel walls and other vehicles, a semicylinder and two cylinders centered on the transmitter (Tx) and receiver (Rx) are applied to simulate the communication environment of the tunnel scenario. We derive and explore the corresponding statistical properties including temporal auto-correlation function (ACF), space cross-correlation function (SCCF) as well as frequency correlation function (FCF). The conclusions indicate that the velocity of Tx and distance between Tx and Rx both have impacts on the statistical properties.