Sensing Confidence Level Based Joint Spectrum and Power Allocation in Cognitive Radio Networks

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1、SensingConfidenceLevel-BasedJointSpectrumandPowerAllocationinCognitiveRadioNetworksGuoruDing,QihuiWu&JinlongWangWirelessPersonalCommunicationsAnInternationalJournalISSN0929-6212WirelessPersCommunDOI10.1007/s11277-013-1013-3123Yourarticleisprotectedbycopyrig

2、htandallrightsareheldexclusivelybySpringerScience+BusinessMediaNewYork.Thise-offprintisforpersonaluseonlyandshallnotbeself-archivedinelectronicrepositories.Ifyouwishtoself-archiveyourwork,pleaseusetheacceptedauthor’sversionforpostingtoyourownwebsiteoryourin

3、stitution’srepository.Youmayfurtherdeposittheacceptedauthor’sversiononafunder’srepositoryatafunder’srequest,provideditisnotmadepubliclyavailableuntil12monthsafterpublication.123Author'spersonalcopyWirelessPersCommunDOI10.1007/s11277-013-1013-3SensingConfiden

4、ceLevel-BasedJointSpectrumandPowerAllocationinCognitiveRadioNetworksGuoruDing·QihuiWu·JinlongWang©SpringerScience+BusinessMediaNewYork2013AbstractCognitiveradio(CR)hasbeenextensivelyinvestigatedinthepastdecadetotacklethecontradictionbetweenwirelessspectrums

5、hortageandunderutilization.Inthispaper,wepresentauniÞedanalyticalframeworktodesignPHY-layerspectrumsensingandMAC-layerresourceschedulingjointlyforCRnetworks.Akeyparameter,namedsensingconÞdencelevel(SCL),isintroducedtocharacterizethepresenceofimperfectsensin

6、g,andbridgethedesignsbetweenkindsofspectrumsensingschemesandresourceallocationalgorithms.TheSCL-basedjointdesignofspectrumandpowerallocationisformulatedasamixedintegernon-linearoptimizationproblemandLagrangedualitytheoryisintroducedtomaketheproblemtractable

7、.Theproposedjointdesignframeworkinthispaperprovidesabaselineforcomparingdifferentspectrumsensingschemesplusbandwidthandpowerallocationalgorithms.Numericalresultsdemonstratetheeffectivenessoftheproposedframework.KeywordsCognitiveradio·SensingconÞdencelevel·S

8、pectrumsensing·Resourceallocation·JointdesignAbbreviationsCSSCooperativespectrumsensingCRCognitiveradioPNPrimarynetworkCRNCognitiveradionetworkSUSecondaryuserG.Ding(B)·Q.Wu·J.WangCollegeofCommunication