A MIMO Mobile-to-Mobile Channel Model Derived from a Geometric Street Scattering Model

In this paper, a frequency-nonselective multi-input multi-output (MIMO) channel model for mobile-to-mobile (M2M) communications is presented. This channel model is derived from a new geometric street scattering model. The street model consists of an infinite number of scatterers lying on the left and/or right hand side of the street. It is assumed that both the transmitter and the receiver are moving. The channel model takes into account the exact relationship between the angle of arrival (AOA) and the angle of departure (AOD). Based on this relationship, the statistical properties of the reference model are studied. Analytical solutions are provided for the three-dimensional (3D) space-time cross-correlation function (CCF), the 2D space CCF, and the temporal autocorrelation function (ACF). Starting from the reference model, where the number of scatterers is infinite, a deterministic simulation model is developed. The latter can easily be implemented on a computer, allowing the emulation of the statistical fading behaviour with a great deal of precision. Finally, simulation results show the excellent correspondence between the temporal and spatial correlation properties of the channel simulator and the reference model.