摘要
针对LTE-Advanced系统中小区间干扰及用户公平性问题,提出了基于多小区联合预编码和静态功率控制的比例公平(MCPPC-PF)调度算法。通过干扰空间迫零和静态控制发射功率的方法抑制小区间干扰,并结合比例公平(PF)调度算法,提高用户的公平性。仿真结果表明,与传统算法相比,MCPPC-PF算法提升系统容量的同时还提高了用户的公平性;与基于多小区联合预编码和静态功率控制的最大化吞吐量调度算法相比,MCPPC-PF算法在系统容量损失了4.6%的情况下,边缘用户容量提高了约45%。
Aiming at inter-cell interference and fairness in LTE-Advanced system with the frequency factor,a Proportional Fair scheduling algorithm based on Multi-Cell Precoding and static Power Control（MCPPC-PF） is proposed.According to Zero-Forcing interference space and transmitting power of static control,inter-cell interference is restrained.The introduction of proportional fair scheduling algorithm improves the fairness.The MCPPC-PF algorithm shows a higher fairness and expands the system capacity.The MCPPC-PF algorithm can achieve a cell edge performance gain of 45% while sacrificing the cell throughput of 4.6% compared to the scheduling algorithm based on the multi-cell joint precoding and static power control to maximize throughput algorithm.
出处
《信息与电子工程》
2012年第6期735-739,共5页
information and electronic engineering
基金
国家科技重大专项资助项目(2011ZX03003-003-02
2009ZX03003-008-02)
国家高技术发展研究计划("863"计划)重点资助项目(2009AA011504)
关键词
预编码
静态功率控制
比例公平
吞吐量
公平性
precoding
static power control
proportional fair
throughput
fairness
