计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (33): 91-93.

• 网络、通信、安全 • 上一篇    下一篇

基于D-S理论的认知无线电频谱感知算法

肖淑艳1,孙 茜1,衡 芹1,李世银1,郭国柱2   

  1. 1.中国矿业大学 信息与电气工程学院,江苏 徐州 221116
    2.焦煤集团 小马工业有限责任公司,河南 焦作 454000
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-11-21 发布日期:2011-11-21

Cognitive radio spectrum sensing based on D-S theory

XIAO Shuyan1,SUN Qian1,HENG Qin1,LI Shiyin1,GUO Guozhu2   

  1. 1.School of Information and Electrical Engineering,China University of Mining & Technology,Xuzhou,Jiangsu 221116,China
    2.Coking Coal Group Co.,LTP,Jiaozuo,Henan 454000,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-11-21 Published:2011-11-21

摘要: 针对目前的认知无线电频谱感知数据融合判决规则忽略了各感知节点所处环境差异这一问题,研究了一种基于信任度的多节点频谱感知算法,将D-S证据理论引入判决融合中,通过Matlab仿真验证了该算法的性能相比于原有的频谱感知数据融合算法有了很大的提高。

关键词: 认知无线电, 频谱感知, 信任度函数, D-S融合规则

Abstract: At present most decision rules don’t consider that different nodes are in different wireless environment,resulting in different credibility in their sensing.This paper proposes a new sensing algorithm taking their sensing credibility into account,and introduces the D-S evidence theory into the fusion rule.And the simulation experiment verifies that this proposed algorithm outperforms the existing cooperative spectrum sensing algorithm remarkably.

Key words: cognitive radio, spectrum sensing, belief function, D-S fusion rule