OFDMA多维无线资源联合快速分配算法

A Novel Radio Resource Management Algorithm for OFDMA

OFDMA中多维无线资源的分配是无线通信的重要研究课题之一。通过分部分配的方法,OFDMA系统中的多维无线资源分配算法能够有效降低无线资源分配的时间复杂度,实现资源的快速分配。在此基础上,基于流平衡的资源分配算法综合考虑了用户加权业务速率以及全体用户的归一化子载波容量,能够对多维无线资源联合进行分配。仿真表明,与传统的无线资源分配算法M-LWDF相比,流平衡分部分配算法能更好地适用于多维无线资源系统,在相同的时间复杂度下能够拥有更大的频谱利用率,达到良好的系统性能。

Multidimensional resource allocation for OFDMA is one of the most important topics in wireless communication. Selective dividing method can reduce temporal complexity of multiple dimensional resource allocation. Based on selective dividing, Stream- Balance algorithm is able to allocate radio resource unitedly according to weighted rate of every active user in system and relative capacity of every sub-carrier. The simulation shows that the selective dividing stream balance algorithm achieved better performance than traditional M-LWDF algorithm under similar algorithm comolexity.