Scheme of Cooperative Spectrum Sensing Based on Adaptive Decision Fusion Algorithm-中国期刊网

摘要 Spectrumsensingisoneofthecoretechnologiesforcognitiveradios(CR),wherereliabledetectionofthesignalsofprimaryusers(PUs)ispreconditionforimplementingtheCRsystems.AcooperativespectrumsensingschemebasedonanadaptivedecisionfusionalgorithmforspectrumsensinginCRisproposedinthispaper.ThisschemecanestimatethePUpriorprobabilityandthemissdetectionandfalsealarmprobabilitiesofvarioussecondaryusers(SU),andmakethelocaldecisionwiththeChair-Varshneyrulesothatthedecisionsfusioncanbedonefortheglobaldecision.SimulationresultsshowthatthefalsealarmandmissdetectionprobabilitiesresultedfromtheproposedalgorithmaresignificantlylowerthanthoseofthesingleSU,andtheperformanceoftheschemeoutperformsthatofthecooperativedetectionbyusingtheconventionaldecisionfusionalgorithms.

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Scheme of Cooperative Spectrum Sensing Based on Adaptive Decision Fusion Algorithm

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Scheme of Cooperative Spectrum Sensing Based on Adaptive Decision Fusion Algorithm

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