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1、Int.J.SensorNetworks,Vol.17,No.3,2015177Censoring-basedcooperativespectrumsensingwithbestrelayMeilingLiandAnhongWang*SchoolofElectronicsInformationEngineering,TaiyuanUniversityofScienceandTechnology,Taiyuan030024,ChinaEmail:meiling_li@126.comEmail:wah_ty@163.com*CorrespondingauthorAbstract:Incen
2、tralised-relay-basedcooperativespectrumsensing(CSS),boththesensingchannelsandthereportingchannelsmaysufferfromfading,whichwillgreatlydeterioratethedetectionperformance.Basedonthepriorwork,inordertosavethesystemcost,acensoring-basedCSSwithbestrelaywasproposedfromthepointofactualdemand,where,onlyw
3、henthetargetsecondaryuser(SU)hasdetectedtheprimaryuser(PU)signalanditsreportingchannelisdeeplyfaded,thetargetSUwillrequestforrelay’scooperation.Inordertovalidatethesystemperformancebytheproposedscheme,wefurtheranalysethedetectionprobabilityandthefalsealarmprobabilityaswellasthesecondarythroughpu
4、toverRayleighfadingchannels.Weshowthat,thesuggestedbestrelayselectionschemecanmakethebetterperformance.Thedetectionprobabilitycanbeimproved,andwhenassuringsufficientprotectiontothePU,thehighersecondarythroughputcanalsobeachieved.Keywords:CRNs;cognitiveradionetworks;CSS;cooperativespectrumsensing
5、;secondaryrelay;reportingerrorprobability;detectionperformance;secondarythroughput.Referencetothispapershouldbemadeasfollows:Li,M.andWang,A.(2015)‘Censoring-basedcooperativespectrumsensingwithbestrelay’,Int.J.SensorNetworks,Vol.17,No.3,pp.177–187.Biographicalnotes:MeilingLireceivedthePhDinSignal
6、andInformationProcessingfromBeijingUniversityofPostsandTelecommunications(BUPT)in2012.SheiscurrentlyaLectureratSchoolofElectronicsInformationEngineering,TaiyuanUniversityofScienceandTechnology(TYUST),China.Herresearchinterestsincludecognitiveradio,cooperativecommunicationsandinterferencecoordina
7、tiontechnology.AnhongWangreceivedthePhDintheInstituteofInformationSciencefromBeijingJiaotongUniversityin2009.SheiscurrentlyaProfessoratSchoolofElectronicsInformationEngineering,TaiyuanUniversityofScienceandTechnology(TYUST),
