基于非合作博弈的OFDMA-WLAN系统资源分配算法研究

Research on Resource Allocation Based on Noncooperation Game for OFDMA-WLAN System

为满足无线局域网中基于正交频分多址技术(OFDMA-WLAN)的多用户通信需求,提出了一种基于非合作博弈的资源分配策略,利用博弈论这一有效工具对无线网络服务质量的资源分配问题进行研究,同时将用户对信道质量的不同需求转化为多用户对不同信道资源分配的非合作博弈竞争问题。此外,还将纳什均衡问题(NEP)细分为数个变分不等式子问题,通过凸优化函数对这些子问题分别求解。数值分析结果表明,所提算法在资源分配的公平性和数据传输率方面达到了更好的折中。

To satisfy different communication requirements of multiple users in the orthogonal frequency division multiple access(OFDMA)wireless local area network(WLAN)system downlink transmission,a resource allocation algorithm based on noncooperation game was presented.In this paper game theory is used as an efficient tool to study resource allocation in WLAN with quality-of-service(QoS),and different channel quality requirements are converted into multiple users' noncooperation game problems for different channels resource allocation.The Nash equilibrium problem(NEP)is divided into sub-problems about variational inequality(VI).The sub-problems are solved by convex optimization function.The numerical analysis results show that the proposed algorithm in this paper is better in a trade-off among fairness about resource allocation and data transmission rate.