认知无线网络中基于进化博弈的动态频谱接入  

Dynamic spectrum access based on evolutionary game in cognitive radio network

作　　者：王欢[1] 唐伦[1] 陈前斌[1] 刘光明[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8期3112-3114,共3页Application Research of Computers

基　　金：国际科技合作重点计划项目(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(CSTC;2007BB2390;2008BB2413);重庆市教育委员会科学技术研究项目(KJ090501;KJ080522;KJ090501)

摘　　要：研究了认知无线网络环境中基于价格动态性的动态频谱接入,即不同的授权网络服务商以不同的价格将空闲频谱出售给认知网络,且认知用户可以根据自己获得的报酬动态地接入不同的网络。为最大化认知网络的效用,提出了基于进化博弈的动态频谱接入方案。仿真结果表明,当认知用户群体到达进化均衡时,接入每个主网络的认知用户数量的比例达到稳定状态,最大化了认知用户和网络的效用。This paper investigated the dynamic spectrum access （OSA） based on price dynamics in cognitive radio networks in which different licensed network providers sell idle spectrum at different price to cognitive networks, and secondary users dynamically access different licensed networks according to the received payoff. In order to maximize the utility of cognitive network, proposed a dynamic spectrum access approach based on evolutionary game. The simulation shows that the number of secondary users that select each licensed networks achieve steady state when the population of secondary users arrive at evolutionary equilibrium and consequently maximize the utility of cognitive network.

关 键 词：认知无线电 动态频谱接入 进化博弈 进化均衡 复制动力学 

分 类 号：TN923[电子电信—通信与信息系统]