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基于数据融合的协作频谱感知算法
引用本文:卞荔,朱琦.基于数据融合的协作频谱感知算法[J].南京邮电大学学报(自然科学版),2009,29(2).
作者姓名:卞荔  朱琦
作者单位:1. 南京邮电大学,江苏省无线通信重点实验室,江苏,南京,210003
2. 南京邮电大学,江苏省无线通信重点实验室,江苏,南京,210003;东南大学,移动通信国家重点实验室,江苏,南京,210096
基金项目:国家重点基础研究发展规划(973计划),国家自然科学基金,东南大学移动通信国家重点实验室开放研究基金 
摘    要:协作的频谱感知使认知无线电(CR)网络对主用户进行可靠的检测,并避免了对主用户通信的干扰.数据融合是协作的频谱感知的关键技术.对基于"与"准则、"或"准则、最大后验概率准则和贝叶斯准则的数据融合算法进行了研究,采用这4种融合方法在认知无线电网络中进行协作频谱感知,并比较了它们的频谱检测性能.仿真结果显示最大后验概率准则和贝叶斯准则在认知无线电的环境中有优越的感知性能.

关 键 词:认知无线电网络  协作频谱感知  数据融合  贝叶斯准则

Cooperative Spectrum Sensing Algorithm Based on Data Fusion
BIAN Li,ZHU Qi.Cooperative Spectrum Sensing Algorithm Based on Data Fusion[J].Journal of Nanjing University of Posts and Telecommunications,2009,29(2).
Authors:BIAN Li  ZHU Qi
Institution:BIAN Li1,ZHU Qi1,21.Jiangsu Key Lab of Wireless Communications,Nanjing University of Posts , Telecommunications,Nanjing 210003,China2.National Mobile Communications Research Laboratory,Southeast University,Nanjing 210096,China
Abstract:Cooperative spectrum sensing enables a Cognitive Radio(CR) networks to reliably detect primary users and avoid causing interference to primary user's communications.The data fusion technique is a key component of cooperative spectrum sensing.Four data fusion methods have been investigated in this paper,including "AND" rule,"OR" rule,the largest posterior probability?rule and Bayesian rule.We use them to sense spectrum cooperatively in CR networks and their spectrum detection performances were compared.Simul...
Keywords:cognitive radio networks  cooperative spectrum sensing  data fusion  Bayesian rule  
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