Performance Analysis of Ultra-dense Networks with Frequency Reuse

Abstract

Ultra-dense networks (UDN) have become a key technology in future communications systems by deploying a large number of low-power small cell base stations (SBS). However, ultra-dense deployment of small cells in the coverage area of conventional macrocells presents new challenges, such as inter-tier interference (interference between small cells (SC) and macro cells (MC)) and both-tier interference (interference between small cells), which may affect the overall network performance. In this work, in order to mitigate interference, frequency reuse is used. The simulation was performed with MATLAB software based on Monte Carlo methodology for discrete events, with the objective of evaluating the impact of ultra-dense networks within fixed infrastructure wireless networks. The main performance indicators are the Signal to Interference Ratio (SIR) and throughput.