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中文摘要：
为了满足 OFDMA-WLAN 系统下行通信中多用户的不同业务需求，提出一种基于公平性和 QoS 服务保障的资源分配算法。不同的 QoS 要求被转换成不同的速率要求来计算 QoS 满意等级；优化目标被修改为公平性驱动的优化函数以提供公平性保障；复杂的资源分配问题被划分为信道分配和功率分配问题，并通过二分图匹配和注水法得到分配结果。与其他算法相比，所提出的算法牺牲了较少的数据速率换取更高的公平性和 QoS 满意度。仿真结果表明所提算法具有保障 QoS 和公平性的能力，且在 QoS、公平性和速率之间权衡折中时表现更好。
英文摘要：
To satisfy different service requirements of multiple users in the orthogo nal frequency division multiple access wireless local area network OFDMA-WLAN system downlink transmission a resource allocation algorithm based on fairness and quality of service QoS provisioning is proposed. Different QoS requirements are converted into different rate requirements to calculate the QoSs atisfaction level.The optimization object is revised as a fairness-driven resource optimization function to provide fairness. The complex resource allocation problem is divided into channel allocation and power assignment sub-problems. The sub-problems are solved by the bipartite graph matching and water-filling based method.Compared with other algorithms the proposed algorithm sacrifices less data rate for higher fairnes and QoS satisfaction.The sim ulation results show that the proposed algorithm is capableo fp rovi ding QoS and fairness and performs better in a tradeoff among QoS fairness and data rate.
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