Interference Management for Downlink OFDMA Using Fractional Frequency Reuse

Abstract

The Long Term Evolution (LTE) of the Third Generation Partnership project (3GPP) has recently been focusing towards aggressive frequency reuse; so that maximum number of hands can be gotten within a cell. Traditional frequency reuse concept for interference management doesn’t provide satisfactory coverage and rate, thus fraction frequency reuse is chosen. In today’s wireless communication systems there are challenges regarding SINR and data rate like distance, probability of coverage and probability of acceptance rate. Fractioning the number of reuse to study the problem and find better solutions. The aim is to evaluate the performance of the FFR on MATLAB by comparing FFR with traditional reuse concerning their performance and capabilities of both as schemes to find the best solution. FFR is purposed as a candidate for interference management and its comparative evaluation over traditional frequency reuse on the basis of three parameter metrics probability of coverage , probability of acceptance rate and frequency reuse factor are done and FFR has relatively better performance. Further improvements in both data rate and SINR can be achieved by FFR implementation . The simulation results show that FFR has better performance in SINR than traditional reuse better, similar to reuse 3and coverage around 200% more than it in particular SINR. Moreover the data rate value of FFR is more than 200% and nearly 300% regarding to reuse 1 and reuse 3 respectively.