Reverse link capacity analysis of a CDMA cellular system with mixed cell sizes

The demands for mobile communication set-vices are growing rapidly, In heav ily populated areas, cell splits are unavoidable to increase the capacity o f the cellular system. Cell splitting makes a cellular system have mixed ce ll sizes. For cell planning, it is necessary to analyze the reverse link ca pacity of a code-division multiple-access (CDMA) cellular system with mixed cell sizes. In this paper, we propose a method to calculate the reverse li nk capacity of a CDMA cellular system with mixed cell sizes. When a macro c ell is split into three micro cells, as an example, we calculate the revers e link capacities for the three micro cells and the neighboring macro cells . The results show that as the radius of a micro cell decreases, the revers e link capacity of the micro cell increases, while those of the neighboring macro cells decrease.