基于图型博弈的动态频谱分配算法  

Dynamic spectrum allocation algorithm based on graphical game

作　　者：刘觉夫[1] 杨将[1] 朱丙虎[1] 胡静[1] 

机构地区：[1]华东交通大学信息工程学院,江西南昌330013

出　　处：《计算机工程与设计》2016年第6期1464-1470,共7页Computer Engineering and Design

基　　金：国家自然科学基金项目(61163055);江西省研究生创新专项基金项目(YC2014-X004)

摘　　要：针对在Underlay频谱共享方式下的认知无线网络动态频谱分配问题,为提高认知用户接入频谱的概率并最大化认知无线网络的吞吐量,提出一种分布式动态频谱分配算法。考虑认知用户之间干扰关系的独立性,建立一种图型博弈模型,设计效用函数,引入价格函数量化对主用户的干扰影响,理论验证该模型纳什均衡的存在性。仿真实验结果表明,该算法收敛速度快,可以增大认知用户接入频谱的概率,提高网络吞吐量。A distributed algorithm was designed for dynamic spectrum allocation for the cognitive users coexisting with primary users in an Underlay spectrum sharing paradigm.Considering the interference independence between cognitive radio users,a graphical game model was established.To quantify interference effects of cognitive user on primary users,the price function was brought into the utility function.And in this game,the existence of pure strategy Nash equilibrium was proved theoretically.To maximize cognitive radio network throughput and increase the probability of the cognitive users＇ access to spectrum,a distributed dynamic spectrum allocation algorithm was proposed.Simulation results show that the algorithm converges faster and increases the probability of the cognitive users＇ access to spectrum and maximizes the throughput of the networks.

关 键 词：认知无线网络 动态频谱分配 Underlay频谱共享 图型博弈 效用函数 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]