认知无线网络中基于博弈的频谱共享  

Spectrum sharing based on game theory in cognitive radio networks

作　　者：胡林[1] 唐伦[1] 陈前斌[1] 李实秋[1] 

机构地区：[1]重庆邮电大学移动通信技术重点实验室,重庆400065

出　　处：《计算机应用研究》2009年第12期4704-4706,共3页Application Research of Computers

基　　金：国际科技合作计划项目(2008DFA12110);新世纪优秀人才支持计划项目(NCET-06-0778);重庆市自然科学基金资助项目(2007BB2390;2008BB2413);重庆市教育委员会科学技术研究项目(KJ070501;KJ080522;KJ090501)

摘　　要：研究了认知无线网络环境中基于价格动态性的频谱共享,主要用户服务提供商以不同的频谱价格向认知用户服务提供商出售空闲频谱,认知用户根据获得的收益调整对频谱的需求。在全体服务提供商对频谱价格满意的基础上,为最大化认知用户的收益,提出了基于静态博弈和动态博弈的频谱共享方案。仿真结果表明,通过合理设置学习速率,动态博弈达到了接近静态博弈的性能,最大化认知用户的收益。This paper investigated the spectrum sharing based on price dynamics in cognitive radio networks in which one primary service provider sells idle spectrum at different price to secondary service providers, and secondary users dynamically adaped the requested spectrum size according to the received payoffs. In order to maximize the payoffs of secondary uses based on the charging prices all service providers were satisfied, proposed a spectrum sharing approach based on the static and dynamic game. Simulation results indicate that the dynamic game achieves the performance of the static game through setting learning rate properly, and consequently the payoffs of secondary users is maximized.

关 键 词：频谱共享 认知无线电 博弈论 纳什均衡 稳定性分析 

分 类 号：TN923[电子电信—通信与信息系统]