On the Spatial Multiplexing Gain of Sdma for Wireless Localloop

The high teletraac demand of local loop customers as compared to cellular mobile customers requires a cellular system to have a higher capacity if used for wireless local loop access. To cope with this fact Space Division Multiple Access is proposed to be implemented on top of a cellular F/TDMA system. SDMA allows the spatial user distribution to be exploited for multiple access. Thus, the properties of the user distribution are crucial for the resulting multiplexing gain. In this paper we model the user distribution in a cell by a planar point process and derive measures of the spatial multiplexing gain.