Iqbal, RaufAhmed, JavedLamahewa, TharakaAbhayapala, Thushara2015-12-10December 1http://hdl.handle.net/1885/57362The classical Clarke model of mobile radio reception assumes a constant mobile velocity. We, in this paper, relax the assumption of constant mobile velocity to allow the mobile to have constant acceleration and derive expression for the non-stationary autocorrelation function of the channel process in general 2-dimensional (2D) scattering environments. Under suitable assumptions, an expression for Wigner-Ville spectrum is obtained in isotropic scattering environment which suggests that the Wigner-Ville spectrum is a natural generalization of the Clarke's model to constant mobile acceleration scenario.Keywords: Autocorrelation functions; Channel process; Constant acceleration; Isotropic scattering; Mobile radios; Mobile velocity; Natural generalization; Nonstationary; Scattering environment; Wigner-Ville distribution; Wigner-Ville spectrum; Fading channels; Regr200910.1109/INMIC.2009.53831322016-02-24