OFDM系统分组调度算法仿真与分析

Simulation and Analysis of Packet Scheduling Algorithms based on OFDM System

对于蜂窝正交频分复用(OFMA)系统,分组调度技术是影响系统性能提升的重要因素。分组调度算法是为分组业务提供资源分配及复用的方法。这里介绍了分组调度技术原理及几种经典的调度算法,并通过Matlab仿真,对几种调度算法的公平性和吞吐量进行了比较。通过仿真可知,比例公平算法(PF,Proportional Fair)平衡考虑了系统吞吐量与公平性,取得了较好的效果。

For cellular orthogonal frequency division multiplexing（OFDM） systems,the packet scheduling technique is a key factor for system performance improvement.Packet scheduling algorithm provides resource allocation and multiplexing for packet service.This paper gives the principles of packet scheduling technique and several classical scheduling algorithms,compares system throughput and fairness of these classical scheduling algorithms by Matlab simulation.The simulation shows that the PF（Proportional Fair） algorithm gives balanced consideration of the system throughput and fairness and thus could achieve fairly good results.