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1 个结果
  • 简介:Spectrumsensingisoneofthecoretechnologiesforcognitiveradios(CR),wherereliabledetectionofthesignalsofprimaryusers(PUs)ispreconditionforimplementingtheCRsystems.AcooperativespectrumsensingschemebasedonanadaptivedecisionfusionalgorithmforspectrumsensinginCRisproposedinthispaper.ThisschemecanestimatethePUpriorprobabilityandthemissdetectionandfalsealarmprobabilitiesofvarioussecondaryusers(SU),andmakethelocaldecisionwiththeChair-Varshneyrulesothatthedecisionsfusioncanbedonefortheglobaldecision.SimulationresultsshowthatthefalsealarmandmissdetectionprobabilitiesresultedfromtheproposedalgorithmaresignificantlylowerthanthoseofthesingleSU,andtheperformanceoftheschemeoutperformsthatofthecooperativedetectionbyusingtheconventionaldecisionfusionalgorithms.

  • 标签: 自适应决策 融合算法 谱检测 合作 CR系统 先验概率