A frequency reuse partitioning scheme with successive interference cancellation for OFDMA uplink transmission

Abstract

Inner cell interference (INCI) is avoided in common multicell orthogonal frequency division multiplex access (OFDMA) systems but inter cell interference (ICI) still exist. The system throughput is severely degraded by ICI, especially at cell edge. Several schemes have been proposed to handle this problem by coordinating the way to allocate spectrum resource to each cell. Since the allocation of spectrum has effects on ICI mitigation and the spectral efficiency, a wise strategy to consider those two factors is required. In this paper, the power division reuse partitioning scheme with successive interference cancellation (PDICS) for OFDMA uplink transmission is discussed. PDICS balances ICI mitigation and spectral efficiency by appropriate frequency allocation and power distribution. To improve frequency efficiency, the frequency reuse factor is chosen as 0.5, so INCI exists. To minimize INCI, successive interference cancellation is suggested. The simulation results show that PDICS has better performance of throughput and symbol error rate (SER) than the conventional schemes.