一种新的分布式协作能量检测算法  

A Novel Distributed Cooperative Energy Detection Algorithm

作　　者：王晓侃[1] 卢光跃[1] 包志强[1] 白辉[1] 

机构地区：[1]西安邮电大学通信与信息工程学院,西安710121

出　　处：《电讯技术》2012年第9期1480-1485,共6页Telecommunication Engineering

基　　金：国家自然科学基金资助项目(61271276);新世纪人才计划资助项目(NCET-08-0891);陕西省自然科学基金资助项目(2010JQ80241);陕西省教育厅资助项目(11JK0925;11JK0929;2010JK836)~~

摘　　要：针对集中式协作能量检测算法严重依赖中心节点的问题,提出了一种基于一致滤波器的完全分布式的协作能量检测算法。该算法不需要中心节点,次用户可以通过与其邻居次用户进行局域的数据交换,实现基于数据级融合的协作频谱感知。仿真结果表明,该算法比现有的集中式协作能量检测算法优越,能够实现安全的频谱感知。In order to avoid the centralized cooperative energy detector＇s heavy dependence on the central node, a novel distributed cooperative energy detecting algorithm based on the consensus filter is proposed. The proposed detector does not need the central node for cooperation, and the secondary users exchange their energy information only with their neighbor users to realize the data level cooperative energy detector. Simulations show that the proposed algorithm is much superior to the existing centralized cooperative energy detecting algorithms in both detecting performance and robustness for security of spectrum sensing.

关 键 词：认知无线电 协作频谱感知 一致滤波 频谱感知安全 

分 类 号：TN911[电子电信—通信与信息系统]