认知Wi-Fi网络中使用相关均衡的频谱共享算法  

Correlated equilibrium-based spectrum sharing algorithm design for the cognitive Wi-Fi networks

作　　者：徐超[1] 盛敏[1] 杨春刚[1] 马骁[1] 

机构地区：[1]西安电子科技大学综合业务网理论及关键技术国家重点实验室,陕西西安710071

出　　处：《西安电子科技大学学报》2014年第3期95-102,109,共9页Journal of Xidian University

基　　金：国家重点基础研究发展计划(973计划)资助项目(2009CB320404);国家自然科学基金资助项目(61172079;61231008;61201141;61201139);教育部创新团队111项目资助项目(B08038);国家重大专项资助项目(2010ZX03003-001);陕西省科学技术研究发展计划资助项目(2011KJXX-40);陕西自然科学基金资助项目(2012JQ8012);中央高校基本业务费资助项目(K5051201033)

摘　　要：认知Wi-Fi网络是基于认知无线电技术、感知和利用电视频谱白空的新型无线局域网.在该无线网络环境下,设计了集中式和分布式两种基于相关均衡的频谱共享算法.综合考虑了认知Wi-Fi网络的频谱分裂特性、多网间的互扰和用户的业务需求等,将频谱共享问题建模为非协作博弈.两种算法分别考虑了有效性和复杂度.其中,集中式算法可最大化网络整体收益,而分布式算法无须引入信息交互.仿真结果表明,相较于贪婪算法,这两种算法均能提升网络收益.The cognitive Wi-Fi network is a novel WLAN（ wireless local area network） operating on TVWS （ TV white space） with cognitive radio technology . Two equilibrium -based spectrum sharing algorithms are proposed in this wireless network , which are implemented in a centralized way and a distributed way , respectively . Comprehensively considering the spectrum fragmentation , the interference among networks and the clients＆#39; traffic requirements , the spectrum sharing problem is formulated as a noncooperative game . The two algorithms consider the efficiency and complexity , respectively . To be specific , the centralized algorithm can maximize the whole payoff of the networks , while the distributed algorithm can be realized without information interaction . Simulation results show that , compared to the greedy algorithm , both of the two proposed algorithms can achieve higher benefits .

关 键 词：频谱共享 非协作博弈 相关均衡 分布式学 

分 类 号：TN929.5[电子电信—通信与信息系统]