Throughput Analysis in Heterogeneous Networks Using Soft Frequency Reuse

Abstract

The increasing demand of higher data traffic is one of the principal issues in wireless cellular networks which are evolving towards heterogeneous networks. The deployment of small cells in heterogeneous networks causes interference challenges which can be addressed by frequency reuse techniques in a much better way. The concept of frequency reuse is based on dividing bandwidth between cell center and cell edge region of a cell and reuse these frequencies in the adjacent cell such that the interference between cells can be reduced. The critical users are the one which lies at the cell center boundary since they receive low signal to interference ratio. It is observed that the variation of cell center radius has a direct impact on critical users in term of outage probability and throughput. To achieve optimal throughput and minimum outage probability, we have extracted configurations in terms of radius and power control factor