摘要: |
在把DS证据理论应用于多节点的频谱感知数据融合时,如果数据冲突较大则融合结
果并不理想。为了解决上述问题,对DS证据理论的证据组合规则进行了改进,给出了一个
在数据冲突大时也适用的数据融合公式,并把这种改进的数据融合算法应用到多节点协作频
谱感知中。MATLAB仿真测试与结果分析表明改进算法提高了频谱感知性能。 |
关键词: 认知无线电 频谱感知 改进D S证据理论 数据融合 |
DOI: |
|
基金项目:江苏省产学研联合创新资金项目(BY2009114);徐州市科技计划项目(XX10A001) |
|
Cognitive radio spectrum sensing algorithm based on improved D-S evidence theory |
WANG Miao-miao,LI Shi-yin,XIAO Shu-yan,SUN Ke-jian,CUI Lei |
(School of Information and Electrical Engineering,China University of Mining and Technology,Xuzhou 221116,China) |
Abstract: |
When the data fusion algorithm based on DS evidence theory is used in the inte
gration of data collected by multiple nodes, the fusion effect of the DS evide
nce theory is not good if the data is conflict seriously. In order to solv
e the problem,the evidence combination rule of DS evidence theory
is improved and a new data fusion formula which is also applicable when the dat
a is conflict seriously is provided.The improved algorithm is applied to the coopera
tion of spectrum sensing algorith
m.MATLAB simulation and analysis demonstrate the spectrum sensing performance is
improved by using the proposed algorithm. |
Key words: cognitive radio spectrum sensing improved D-S fusion rule information fusion |