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1、西安邮电大学毕业设计（译文）论文题目：基于多相滤波器组及瞬时测频技术的高效带宽数字接收机研究院（系）：通信与信息工程学院专业：电子信息科学与技术班级：电科0903班学生姓名：李盼导师姓名：常虹职称：讲师1ACOMPARISONOFANALOGFRONTENDARCHITECTURESFORDIGITALRECEIVERSHollyPekauStudentMember,IEEE,UniversityofCalgaryTRLabse-mail:pekau@atips.caJamesW.HaslettFellow,IEEE,UniversityofCa
2、lgaryTRLabse-mail:haslett@enel.ucalgary.caAbstractRadioreceiversthatperformanalogtodigitalconversionclosertotheantennaanddomostofthesignalprocessinginthedigitaldomainareknownasdigitalreceivers.Digitalreceiversaredesirablebecausetheycanbemoreeasilyre-configuredformultista-dard
3、operation,theycanfacilitateperformanceimprovementsbyusingdigitalfiltersforsignalprocessing,andtheycanpotentia-llyrealizesavingsinchiparea,powerconsumptionandcost.Thedefinitionofadigitalreceiverisgeneralandthereareseveraltypesofreceiverarchitecturesthatfallintothiscategory.Dig
4、italreceiverarchitectureswhichhavebeenproposedincludedirectRFNyquistsampling,RFbandpasssamplingorsub-sampling,directIFNyquistsampling,andIFbandpasssamplingorsubsamp-ling.Thispapercomparesthesedigitalreceiverarchitecturesinvariouscategoriesincludingsusceptibilitytoaperturejitt
5、erandaperturedistortion,noisefiguredegradationduetoaliasing,easeofanti-aliasingfilterimplementation,easeofADCimplemen-tation,linearity,powerconsumption,chiparea,andre-configurability.SystemandcircuitlevelsimulationsusingacommercialRFsimulatorareperformedtoquantitativelycompar
6、ethedifferentdigitalreceiverarchitecturesinsomeoftheaforementionedcategories.Thefeasibilityofusingtheproposeddigitalreceiverarchitecturesforvariousstandardsisthenexaminedandasurveyofpublisheddigitalreceiverarchitecturesispresented.Keywords:Digitalreceiver,softwareradio,sub-sa
7、m21IntroductionTheincreasingdemandforflexiblemulti-standard,multi-bandradiosincreasesandrecentimprovementsinanalog-to-digitalconvertertechnologyhaveledtothedevelopmentofsoftwareradioswithdigitalreceivers.Inasoftwareradioreceiver,widebandanalog-to-digitalconversionthatcaptures
8、multiplechannelsofthesoftwareradionodeisperformedclosertotheantenna.
