【作者】 孙文文； 贺志强； 牛凯； 田宝玉；

【Author】 Sun Wen wen He Zhi qiang Niu Kai Tian Bao yu (School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing,100876,China)

【机构】 北京邮电大学信息与通信学院；

【摘要】 从提高系统频谱效率的角度出发,提出了一种应用在多小区正交频分多址蜂窝系统下行链路中,基于粒子群优化方法执行分布式功率分配的方法。为了减轻共信道干扰,基站在每个小区运用粒子群算法执行功率分配;且在这个过程中,每个基站独立工作并不需要与邻近小区交换任何信息。仿真结果显示本文提出的方法相对于两种传统方法,极大地提高了系统的吞吐量。更多还原

【Abstract】 In order to increase spectral efficiency,a novel method based on Particle Swarm Optimization(PSO) was proposed to perform distributed power allocation for downlink multi-cell Orthogonal Frequency Division Multiplexing Access(OFDMA) networks.In order to mitigate co-channel interference,base station implemented power allocation by using PSO algorithm in each cell which is partitioned into three sectors.Moreover,each base station could work independently and did not have to change any information with neighboring cells during the process.Simulation results showed that the proposed scheme significantly increases the system’s throughput compared with two other algorithms.更多还原