Wave propagation inside and around vehicles in dynamic time variant scenarios

With the growing demand for wireless communication systems, a wireless concept for the data exchange between different system components inside a vehicle and also between vehicles becomes interesting. In order to describe and thus assess the mobile radio channel in and around the vehicle, simulations are required. For low frequencies, full wave simulations using the Method of Moments are adequate means. For higher frequencies, those models get inadequate because of their computational effort Systems employing high frequencies are also used for car-to-car communication systems. The main aspect in such applications is the time variance of the scenario, as the vehicles move continuously and thus the channel impulse response is time-variant. This paper discusses the demands for models to describe the radio channel inside and around vehicles at high frequencies and presents an appropriate ray tracing approach.