计算机技术与发展2016，Vol.26Issue(4)：195-199,5.DOI:10.3969/j.issn.1673-629X.2016.04.043
基于DS证据理论的双门限协作频谱感知新方法
Improved Cooperative Spectrum Sensing Scheme of Double Threshold Decision Based on Dempster-Shafer Theory
摘要
Abstract
An improved cooperative spectrum sensing scheme in cognitive radio networks is proposed,which combines the fusion technol-ogy based on Dempster-Shafer evidence theory with the advantage of double threshold decision. In the local sensing period, double threshold decision is introduced to remove the cognitive users with low reliability and let the cognitive users with high reliability send the trusted function value,decreasing the data sending to the fusion center,so as to reduce report channel bandwidth of cooperation. In the fu-sion period,just the highly credible sensing results are fused at the fusion center using the Dempster-Shafer theory,which could reduce the calculation of fusion center. The simulation results show that the novel scheme can keep high detection performance and reduce band-width of cooperation with a low calculation of cooperative system.关键词
协作频谱感知/DS证据理论/双门限判决/协作带宽开销Key words
cooperative spectrum sensing/Dempster-Shafer evidence theory/double threshold decision/bandwidth cost of cooperation分类
信息技术与安全科学引用本文复制引用
孙飞,胡钧..基于DS证据理论的双门限协作频谱感知新方法[J].计算机技术与发展,2016,26(4):195-199,5.基金项目
国家“863”高技术发展计划项目(2009AA01Z241) （2009AA01Z241）
国家自然科学基金资助项目(61271335,61201161) （61271335,61201161）
江苏省高校自然科学研究重大项目(14KJA510003) （14KJA510003）
