Wideband measurement-based modeling of inter-vehicle channels in the 5 GHz band

In this paper, we describe a model for the fading of Vehicle-to-Vehicle (V2V) radio propagation channels, based on an extensive measurement campaign that has been conducted at 5.3 GHz in four different environments (i.e. on a campus, on a highway, in suburban and urban areas) around Helsinki (Finland) in August 2007. Owing to the well known non-stationary behavior of the V2V channel, we considered a Geometry-based Stochastic Channel Modeling (GSCM) approach rather than a more classical tapped-delay line one. The fading of the time-variant scatterer contributions is modeled as the combination of a distance-decaying process and two stochastic small- and large-scale fading processes. The complete parametrization of the V2V channel model is provided in the paper.