一种基于OFDMA的无线多播比例公平调度方案

为了在无线多播网络中提高系统吞吐量，该文提出了一种新型的多播组间公平的无线资源分配方案。方案在保证公平分配无线资源的基础之上，运用设置平均误块率门限的方法，在系统的多用户分集增益和多播增益之间找到了最佳平衡，从而提高了系统的吞吐量。理论和仿真分析表明，与已有的传统多播方案相比，该方案在保证误块率不超过用户忍受的最高限度时，系统能够提供更高的吞吐量。该方案在实际应用中，具有一定的可行性和可操作性。

A Proportional Fair Scheduling Based on OFDMA for Wireless Multicast Service

In order to improve the throughput in wireless multicast scenario,a new type inter-group proportional fairness scheme with average block error rate threshold is proposed,which can not only guarantee fair radio resource allocation but also provide better balance between multi-user diversity and the multicast gain.Theoretical analysis and simulation show that the proposed scheme can effectively improve the wireless multicast system throughput subject to constraint on the average error block rate in comparison with the existing approaches.