A novel spatial-temporal propagation model for multi-antenna system in urban environment

A novel geometrical based spatial-temporal channel model is proposed for multiple antennas system in urban environment, such as smart antenna system or MIMO system. This proposed model assumes that Double bounce (DB) scattering components are also dominant multipaths received by base station as well as Single bounce (SB) scattering path components. The principle to determine the numbers of single bounce components and double bounce components is firstly discussed. Considering that scatterers from different distances to mobile influent signal propagation dissimilarly, distinctive scatterers distribution densities within the coverage area of a base station are put into application. The model can be considered as a uniform model for macro cell and micro cell channel and can be transformed to one of them by choosing appropriate parameters. From point view of channel reconstruction, some essential channel parameters such as the PDF (Probability density function) of TOA (Time of arrival) and AOA (Angle of arrival) are derived with analytical expressions. By comparing with GBSBCM (Geometrical based single bounce circle model), the simulation results of the proposed spatial temporal channel model, including power delay profile and power AOA profile, are more approximate to the measurement data given in a measurement literature than GBSBCM for urban environment.