基于QoS保证的多用户OFDM系统跨层资源分配

摘要

A block-based cross-layer resource allocation algorithm for LTE downlink OFDM system resource allocation and scheduling problem is proposed. This algorithm takes into account the physical layer channel state information, the media access layer ( MAC) of the limited user buffer queue length and the user ’ s QoS requirements such as loss rate and delay to improve the system spectral efficiency as the overarching goal. Through a lot of comparative analysis on real-time video serwice and mixed services show that the proposed algorithm can effectively improve the spectral efficiency and reduce system latency.%针对正交频分复用(OFDM)系统资源分配和调度问题,提出一种基于第三代移动通信长期演进(LTE)系统的分块跨层资源分配算法.此算法考虑物理层的信道状态信息、媒体接入层(MAC)的有限用户缓存队列长度、用户的丢失率和时延等QoS要求,以提高系统频谱效率为总体目标.通过从实时视频业务和混合业务两种业务类型下进行大量对比分析,得出提出的算法能有效提高系统的频谱效率和降低系统时廷.