资源描述：
《An Overview of Software Defined Radio.pdf》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。
1、PetriIsomäki
2、NastoohAvesstaAnOverviewofSoftwareDefinedRadioTechnologiesTUCSTechnicalReportNo652,December2004AnOverviewofSoftwareDefinedRadioTechnologiesPetriIsomäkiUniversityofTurku,DepartmentofInformationTechnologyLemminkäisenkatu14A,20520Turku,Finlandpetri.isomaki@utu.fiNastoohAvesstaUniversity
3、ofTurku,DepartmentofInformationTechnologyLemminkäisenkatu14A,20520Turku,Finlandnastooh.avessta@utu.fiTUCSTechnicalReportNo652,December2004AbstractSoftwareDefinedRadioisanemergingtechnologythathasbeenanactivere-searchtopicforoveradecade.Thetermssoftwaredefinedradioandsoftwareradioareusedtodescribe
4、radioswhoseimplementationislargelysoftware-based.Theseradiosarereconfigurablethroughsoftwareupdates.Therearealsowiderdefinitionsoftheconcept.Variousmilitarysoftwaredefinedradioprogramswerethepathfindersthatprovedtheviabilityoftheconcept.Latestsoftheseprojectshaveproducedradiosthatarealreadyreplacin
5、glegacysystems.Thesoftwareradiotechnologyisrapidlyadvancing,atleastonmostfronts.Thereisanongoingstandardisationprocessofframeworkarchitecturesthaten-ableportabilityofe.g.waveformprocessingsoftwareacrossradiosforvariousdomains.Softwaredefinedradiosarebeginningtofindalsocommercialpotential.Whenthes
6、oftwaredefinedradiobecomesmainstream,thefullpotentialofadaptabilitymaycreatepossibilitiesfornewkindofservices.Fromtheusers’pointofview,seamlessoperationacrossnetworks,withoutcaringabouttheunderlyingtechnol-ogy,wouldbeaverydesirablefeature.Keywords:SoftwareDefinedRadio(SDR),RadioFrequency(RF)front
7、end,Analog-to-DigitalConverter(ADC),DigitalSignalProcessor(DSP),SoftwareCommunicationsArchitecture(SCA),SWRadio,programmable,reconfigurableTUCSLaboratoryCommunicationSystemsLaboratoryContents1Introduction12ImplementationAspects32.1RadioFrequencyFrontEnd.....................32.1.1SuperheterodyneA
8、rchitecture...............42.1.2DirectConversionArchitecture..............52.1.3TunedRFReceiver.....................62.1.4OtherArchitectures.....................62.2A/DandD/AConversion......................72.2.1NoiseandDistortion
