噪声功率不确定下基于能量的频谱检测分析(英文)-豆柴文库

您所在位置：网站首页 / 噪声功率不确定下基于能量的频谱检测分析(英文).docx / 文档详情

在线预览结束，喜欢就下载吧，查找使用更方便

5 金币

下载文档

/ 2

下载提示

如果您无法下载资料，请参考说明：

1、部分资料下载需要金币，请确保您的账户上有足够的金币

2、已购买过的文档，再次下载不重复扣费

3、资料包下载后请先用软件解压，在使用对应软件打开

文本预览

噪声功率不确定下基于能量的频谱检测分析(英文)
Title:Energy-BasedSpectrumDetectionAnalysisunderNoisePowerUncertainty
Abstract:
Inwirelesscommunicationsystems,spectrumsensingplaysacrucialroleindeterminingtheavailablefrequencybandsforopportunisticspectrumaccess.Toensurereliablespectrumsensing,itisessentialtoconsidertheimpactofnoisepoweruncertainty,whichcansignificantlyaffecttheperformanceofenergy-basedspectrumdetectiontechniques.Thispaperpresentsacomprehensiveanalysisofenergy-basedspectrumdetectionundernoisepoweruncertaintyandinvestigatesitsimpactondetectionperformance.Thestudyaimstoprovideinsightsintodesigningrobustspectrumsensingtechniquesthatareresilienttonoisepowervariations.
1.Introduction:
Theincreasingdemandforwirelesscommunicationshasledtoascarcityofavailablefrequencybands.Consequently,thereisagrowinginterestinutilizingunderutilizedlicensedbandsusingcognitiveradiosystemsandopportunisticspectrumaccess.Spectrumsensingisakeycomponentofcognitiveradiosystemsthatallowssecondaryuserstodetectandexploitspectrumopportunitieswhileavoidinginterferencewithprimaryusers.
2.NoisePowerUncertainty:
Inpracticalscenarios,noisepowercanvaryduetoenvironmentalfactors,fadingeffects,interference,andreceiverimperfections.Accurateknowledgeofnoisepowerisessentialforeffectivespectrumdetection.However,inpractice,noisepoweruncertaintyexistsduetochannelvariations,estimationerrors,andmodelmismatch.Thisuncertaintycandegradethedetectionperformancebyincreasingfalsealarmandmissdetectionprobabilities.
3.Energy-BasedSpectrumDetection:
Energydetectors,alsoknownasnon-coherentdetectors,arepopularinspectrumsensingduetotheirsimplicityandlowcomputationalcomplexity.Energy-basedspectrumdetectionmeasurestheenergycontainedinthereceivedsignaloveracertainperiodandcomparesittoapre-definedthreshold.Iftheobservedenergyexceedsthethreshold,thepresenceofprimaryuserisdetected.However,theperformanceofenergy-baseddetectorscanbeaffectedbynoisepoweruncertainty.
4.ImpactofNoisePowerUncertaintyonDetectionPerformance:
Thissectionpresentsadetaileda