Wave Propagation Modelling for Inter-vehiclecommunications

A new model to analyse the wave propagation between moving vehicles is presented in this paper. The approach consists of tree major parts: the modelling of the road traffic, the modelling of the environment adjacent to the road lane and the actual modelling of the wave propagation. A realistic traffic model is used to generate time series of instantaneous positions and velocities of vehicles on a predefined road. Several specific characteristics of the vehicles and their drivers are taken into account. It is therefore possible to create complex traffic scenarios without the need of having detailed and extensive traffic data of selected roads. Additionally the environment of the road is generated stochastically, depending on morphographic data. The result is a proper traffic scenario, which serves as input data for wave propagation simulations. A ray optical approach is used to model the actual wave propagation. Thus, wideband as well as narrowband analyses are possible. Channel parameters such as delay spread, Doppler spread, coherence bandwidth, etc. can be derived.