一种基于信号循环平稳特征的抵御恶意模仿主用户攻击协作频谱检测算法  

Robust cooperative spectrum sensing against primary user emulation attacks based on cyclostationarity

作　　者：马彬[1,2] 方源[1,2] 谢显中[1,2] 

机构地区：[1]重庆邮电大学宽带接入网研究所,重庆400065 [2]重庆邮电大学重庆市计算机网络与通信技术重点实验室,重庆400065

出　　处：《中国科学：信息科学》2016年第6期789-799,共11页Scientia Sinica(Informationis)

基　　金：国家自然科学基金(批准号:61271259;61301123;61471076);重庆市基础与前沿研究计划(批准号:cstc2015jcyj A40047);重庆市计算机网络与通信技术重点实验室基金(批准号:CY-CNCL-2010-02);重庆邮电大学博士启动资金(批准号:A2015-16)资助项目

摘　　要：现有的抵御恶意模仿主用户攻击(PUEA)算法大多基于能量检测,有着应用环境特殊,易被模仿等缺点.针对上述情况,本文提出了一种基于信号循环平稳特征的抵御PUEA协作频谱检测算法,该算法通过对次用户的本地判决结果进行统计分析,并与不含恶意用户情况下的理论统计特性作比较,来识别系统是否受到恶意用户攻击.仿真结果表明,该算法在保证良好的频谱检测性能的同时可以有效抵御PUEA,是一种简单有效的抵御策略.The current methods employed to resist primary user emulation attacks（PUEA） are almost all based on energy spectrum detection, which has several shortcomings, such as need for special application environments and relatively easy emulation. We propose a cooperative spectrum sensing algorithm based on cyclostationarity to resist PUEA. The proposed method analyzes the local spectrum sensing results and compares them with the statistical results without a malicious user（MU） to detect the presence of malicious users. Simulation results show that the method performs effectively in terms of sensing spectrum and resistance to PUEA.

关 键 词：认知无线电 协作频谱检测 恶意模仿主用户攻击 循环平稳特征 频谱决策协议 

分 类 号：TN925[电子电信—通信与信息系统]