摘要
基于非协作感知的不确定性,协作频谱感知方法具有更高的可靠性。在传统的加权数据融合的基础上,根据无线电通信环境次用户(Secondary User,SU)的信任度不同,引入信任度函数及其信任度因子,提出了一种基于次用户信任度的自适应数据融合算法。仿真结果表明,该算法可以提高主用户(Primary User,PU)的检测概率,具有一定的可靠性和有效性,其检测性能优于传统的加权数据融合准则,同时还适应感知用户的拓扑变化。
As compared to the uncertainty of uncooperative perception, the cooperative spectrum sensing perception method has higher reliability. In this paper, a trust function and a trust factor are introduced which based on traditional weighted data fusion and depending on the trust of the radio communication environment,the user （Secondary User, SU） is recognized. Then, an adaptive data fusion algorithm is proposed based on the secondary user trust. Simulation results show that the algorithm can improve the detection probability of an authorized user （Primary User, PU）, and has a certain degree of reliability and validity. The detection performance is better than traditional weighted data fusion criterion, and it can adapt to the perceptual user topology changes.
出处
《电视技术》
北大核心
2013年第9期107-111,共5页
Video Engineering
基金
国家自然科学基金项目(61102062)
重庆市科委自然科学基金项目(cstc2011jjA1192)
关键词
协作频谱感知
加权数据融合
次用户
信任度因子
cooperative spectrum sensing
weighted data fusion
secondary users
trust factor
