Performance of LTE-A Heterogeneous Network using NHFR Method

Abstract

To overcome the interference problem in LTE/ LTE-A networks and in cellular networks in general, the frequency reuse technique is adopted. Interference is a common and big problem in cellular networks, especially in LTE-A due to the use of heterogeneous networks. Different frequency reuse methods such as soft frequency reuse, fractional frequency reuse and Reuse 3 are examples of the frequency reuse technique. In this paper, the NHFR (New Hybrid Frequency Reuse) method is used to mitigate interference in heterogeneous networks and furthermore the performance of such networks is investigated. Analytical solutions are obtained and different performance metrics are calculated. Also, simulations are performed by using the Vienna simulator and comparison with other methods is done. Both analytical and simulation results show that the NHFR method outperforms all the other methods.