4. Multi-Bounced Virtual Scattering Channel Model for Dense Urban Street Environments

This chapter presents a generalized visual scattering channel model for car-to-car mobile radio environments, in which an asymmetric directional antenna is deployed at the MT. The signals received at the MR from the MT are assumed to experience multi-bounced propagation paths. More importantly, the proposed model first separates the multi-bounced propagation paths into odd- and even-numbered-bounced propagation conditions. General formulations of the marginal probability density functions of the angle of departure at the transmitter and the angle of arrival at the receiver have been derived for the given two conditions, respectively. From the proposed model, we derive an expression for the Doppler frequency due to the relative motion between the MT and the MR, which broadens the research of the proposed visual street scattering channel model. The results show that the proposed model can fit those of the previous scattering channel models and the measurement results for dense urban street environments very well, which validate the generalization of the proposed virtual street channel model.