将有线网络中的有效带宽理论运用到无线领域,提出基于MIMO—OFDM时频结构帧的资源分配算法。算法综合考虑了物理层的信道状态信息、数据链路层的用户优先级、公平性及延时服务质量(QoS)要求,相对于传统的分层设计更加合理有效。从统计学的角度,研究了延时QoS违反概率与信道状态信息、资源分配之间的关系,并给出算法的具体步骤。仿真结果表明该算法能显著提高系统的频谱效率,且复杂度适中,是一种实际可行的方案。
By appling the effective bandwidth theory of wireline network on wireless domain, a resource allocation algorithm for MIMO-OFDM time-frequency structure frame is introduced. This algorithm don't only concern the channel state information in the physical layer, but also paid attention to priority, fairness and delay quality of service (QoS) at the date link layer, which would be more effective compared to the conventional layered structure. From statistic point of view in this paper, the relationship among delay QoS, channel state information, resource allocation was researched, and the complete description step was put forward. Simulation results show that this algorithm can improve the spectrum efficiency, and the complication is well situated. It is a feasible scheme.