A capacity degradation model for sectorized FFR networks

This paper presents a capacity degradation model for sectorized cellular networks with FFR (Fractional Frequency Reuse). A sectorized FFR network (SFN) consists of a super group and a number of sectors. Since a super group in a cell employs the same frequency partition as the other super groups in the neighboring cells, inter-cell interferences may become serious when the radius of the super group is largely increased. In the worse case, the largely increasing inter-cell interferences will eventually degrade the overall system capacity. In this paper, Folded Normal Distribution (FND) of MSs is assumed in building the capacity degradation model. Numerical simulations show that by carefully adjusting the ratio between the radius of the super group and the radius of a cell, (i) an MS can receive the same capacity no matter where it is, and (ii) the maximum system capacity can be achieved.