Throughput Performance for Heterogeneous LTE Network by Using Fractional Frequency Reuse Method

In cellular system, Fractional Frequency Reuse (FFR) is partition each cell into two regions which are the cell center region and cell edge region. The dissimilar frequency band is owed to each region in cell. The FFR method may reduce channel interference and achieve large system capacity and hence increases the throughput. Long Term Evolution (LTE) has developed a femtocell for indoor coverage extension. However, the development of femtocell in macrocell area will having interference problem and it ought to be answered in move ahead. This paper proposes an interference management scheme in the LTE femtocell systems using FFR proposed method. In detail, the proposed method is the FFR of six sectors and it selects the optimal size of the fraction center radius as well as the system bandwidth fraction. Simulation results show that the proposed method improve the average throughputs in overall network.