Inter-sector Interference Mitigation Method in Triple-Sectored OFDMA Systems

In this paper, a network-centric subcarrier allocation method is proposed for triple-sectored Orthogonal Frequency Division Multiple Access (OFDMA) systems. The proposed method is based on a networkcentric algorithm that is located in a base station (BS) and coordinates the subchannel allocation of each sector. This method controls the resources (subchannels) allocated to each sector, not to waste available bandwidth and avoid inter-sector interference as much as possible. Two methods are suggested for the subchannel allocation method and the detailed algorithms for each method are provided. Simulation results show that the suggested method achieves better throughput than the distributed subchannel and adjacent subchannel configuration methods under a proportional fair algorithm.