Power Allocation Scheme for Multicell Interference Coordination in OFDMA Systems
Jieying Zheng · Beijing Youdian Xueyuan xuebao · 2008
In order to coordinate the inter-cell interference,a multicell adaptive power allocation scheme was proposed for downlink orthogonal frequency division multiple access(OFDMA) cellular systems.In order to coordinate transmit power in co-subchannels,the difference of signal to interference plus noise ratio(SINR) between co-subchannels of adjacent cells was used to balance SINR.Then the scheme would be able to improve the edge users' performance,reduce the interference in co-subchannels of adjacent cells and improve the radio resource utility.Simulation results show that the scheme could balance the performance of the system and ensure the throughput of the system.