“…In these models scatterers lie in an ellipse which encompasses the transmitter and the receiver located on the foci, [2], are uniformly distributed around the mobile within either a circle, [3][4][5], an ellipse [5], or a hollow disc, [6], or are spatially distributed at an inverted parabolic spatial distribution on a two-dimensional disc centered at the mobile, [7]. The clustering approach, [8], which considers that signal angular spread comes from several clusters, shows a good agreement with experimental results. Two bounce geometric models, [9], show an improvement in prediction accuracy in both indoor and outdoor macrocellular environments.…”