Arrival Angular Profile Modeling at Mobile Station for Cellular Systems

Spatial processing techniques such as Adaptive Array Antenna (AAA) and Multi-Input-Multi-Output (MIMO) are being considered for use in the next generation mobile cellular systems. In order to accurately estimate the performance of these spatial processing techniques in wide-band mobile communications, we need a time-spatial path model that can present the delay profile and the spatial arrival angular profiles at the same time. We proposed a physical time-spatial path model as a variant of Clark´s scattering model and showed by theory and by computer simulation that the proposed model can well match field measurement results with regard to the arrival angular distribution at the BS and the delay time distribution in urban and suburban areas by setting key parameters to appropriate values. In this paper, we propose an empirical arrival angular profile model at the mobile station (MS). First we derive an arrival angular profile model at the MS based on our proposed physical time-spatial path model. Then we optimize the parameters of the model by using field data measured in suburban and urban areas in Tokyo.