基于信誉机制的认知Adhoc网络分簇协作频谱感知  

Cooperative Spectrum Sensing Based on Reputation Mechanism in Cognitive Ad hoc Networks

作　　者：齐全[1] 王可人[1] 杜奕航 

机构地区：[1]电子工程学院,合肥230037

出　　处：《计算机科学》2017年第10期103-108,共6页Computer Science

摘　　要：为了提高认知Ad hoc网络频谱感知的准确率,并抵抗可能存在的SSDF攻击,提出一种基于信誉机制的认知Ad hoc网络分簇协作频谱感知方法。首先,引入检测因子来描述节点的感知能力,采用基于公平性的分簇方法将SU分为不同的簇;然后,对簇内SU设定初始信誉值,并根据感知结果对信誉值进行更新;最后,采用检测因子判决机制对感知数据进行融合,并计算得出漏检概率与虚警概率上界。仿真结果表明,所提方法能有效识别恶意次用户和抵御频谱感知数据伪造攻击,同时具有较小的虚警概率、漏检概率和较好的容错能力。To improve the accuracy of spectrum sensing and to resist the possible threat of SSDF attacks of cognitive Ad hoc networks,a new scheme of cooperative spectrum sensing for cognitive Ad hoc networks based on reputation mechanism was proposed.First,the detection factor is introduced to describe different SUs＇ perception ability,and the SUs is divided into different clusters according to the fairness based clustering method.Then,the reputation value of the SUs in the cluster is set and updated according to the sensing results.Finally,the detection factor decision mechanism is designed for spectrum sensing data fusion.The theoretical upper bound of missed detection and false alarm probability is calculated.The simulation result shows that this scheme can effectively identify malicious users and resist SSDF attack with better fault tolerance,smaller false alarm and missed detection probability.

关 键 词：认知无线电 Ad HOC网络 协作频谱感知 分簇 SSDF攻击 

分 类 号：TN921[电子电信—通信与信息系统]