An Enhanced Approach to Virtually Increase Quasi-Stationarity Regions Within Geometric Channel Models for Vehicular Communications

Vehicular communication channels are intrinsically nonstationary, as they present high mobility and abundant dynamic scatterers. Quasi-stationary regions can assess the degree of nonstationarity within a determined scenario and time variant observation of the channel can be extracted. These regions can aid geometrical models as to increase channel sampling intervals or to develop hybrid stochastic-geometric channel models. In this work, a new methodology for the use of virtual quasi-stationary regions within geometric channel models is proposed, in order to leverage the inherent location information to virtually increase their size. Overall, the use of delay-shifted channel responses improves the mean correlation coefficient between consecutive locations, ultimately reducing computation time for time-variant geometric channel models.