基于D-S证据理论的加权协作频谱检测算法

doi:10.3969/j.issn.1000-436x.2012.12.003

通信学报 ›› 2012, Vol. 33 ›› Issue (12): 19-24.doi: 10.3969/j.issn.1000-436x.2012.12.003

基于D-S证据理论的加权协作频谱检测算法

周亚建^1,³,刘凯²,肖林²

¹ 北京邮电大学计算机学院，北京 100876
² 北京航空航天大学电子信息工程学院，北京 100191
³ 电子信息控制重点实验室，四川成都 610036

出版日期:2012-12-25 发布日期:2017-07-15
基金资助:
国家自然科学基金资助项目;中央高校基本科研业务费专项资金资助项目;中央高校基本科研业务费专项资金资助项目;国家科技重大专项基金资助项目;广西无线宽带通信与信号处理重点实验室开放基金资助项目

Weighted cooperative spectrum sensing algorithm based on dempster-shafer evidence theory

Ya-jian ZHOU^1,³,Kai LIU²,Lin XIAO²

¹ School of Computer Science,Beijing University of Posts and Telecommunications,Beijing 100876,China
² School of Electronics and Information Engineering,Beihang University,Beijing 100191,China
³ Science and Technology on Electronic Control Laborator ,Chengdu 610036,China

Online:2012-12-25 Published:2017-07-15
Supported by:
The National Natural Science Foundation of China;The National Science and Technology Major Project of China;Foundation of Guangxi Key Laboratory of Wireless Wideband Communication ＆Signal Processing

摘要/Abstract

摘要：

摘要：提出了一种基于 D-S 证据理论的加权协作频谱检测（DS-WCSS）算法。该算法使用能量检测进行本地检测，利用2种假设检验条件下检验统计量的方差和均值来评估各认知用户可信度的差异性，进而给出各认知用户可信度的权重，最后使用D-S证据理论进行数据融合和判决。仿真结果表明，与基于D-S证据理论和传统硬判决的协作频谱检测算法相比，DS-WCSS可以有效地提高检测性能。

关键词: 认知无线电, 协作频谱检测, Dempster-Shafer证据理论, 可信度

Abstract:

A weighted cooperative spectrum sensing algorithm based on D-S evidence theory (DS-WCSS) was proposed.The algorithm took energy detector to perform local spectrum sensing,evaluated the credibility difference of cognit ve users according to the means and variances of test statistic in both hypotheses,set credibility weights based on the evaluation of credibility difference,and finally used D-S evidence theory to fuse data and made a decision.Simulation results show that the proposed algorithm has better performance than cooperative spectrum sensing algorithm based on D-S evidence theory and traditional hard-decisions.

Key words: cognitive radio, cooperative spectrum sensing, Dempster-Shafer evidence theory, credibility

周亚建,刘凯,肖林. 基于D-S证据理论的加权协作频谱检测算法[J]. 通信学报, 2012, 33(12): 19-24.

Ya-jian ZHOU,Kai LIU,Lin XIAO. Weighted cooperative spectrum sensing algorithm based on dempster-shafer evidence theory[J]. Journal on Communications, 2012, 33(12): 19-24.

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基于D-S证据理论的加权协作频谱检测算法

Weighted cooperative spectrum sensing algorithm based on dempster-shafer evidence theory

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