基于认知无线电网络的用户合作频谱检测  

Cooperative Spectrum Detection in Cognitive Radio Network

作　　者：高路[1] 康桂华[1] 李庆玲[1] 

机构地区：[1]河海大学计算机及信息工程学院,江苏常州213022

出　　处：《现代电子技术》2009年第6期143-146,共4页Modern Electronics Technique

摘　　要：介绍认知网络中认知用户合作检测算法在降低检测时间以及提高检测灵敏度的优势,构建认知网络中简单的两用户合作协议和非合作协议下的检测系统模型,在此基础上对多认知用户合作情况进行了分析比较。最后对认知网络环境中不同概率参数以及不同数目合作节点的检测性能进行了仿真研究。结果表明,当虚警概率α很小时,采用认知用户的合作感知方法可得到高检测概率,且能降低将近35%的检测时间,有效提高检测主用户的灵敏度。The benefits on reducing detection time and improving sensitivity network of cooperation in cognitive radio are introduced. The detection system model between two users cooperative protocol and non - cooperation protocol in cognitive network is constructed,and the multi - cognitive users cooperation are analysed. The different parameters probability and the detection performance of the number of different cooperation nodes in cognitive network environment are analysed. Under low false alarm probability a ,and it reduces the detection time for the cognitive users by as much as 35% ,and can be exploited to increase the probability of detection in cognitive radio network.

关 键 词：认知无线电 频谱检测 合作感知 检测概率 灵敏度增益 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]