现代移动通信射频核心技术和融合技术研究

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1、东南大学博士学位论文现代移动通信射频核心技术和融合技术研究姓名：蒋伟申请学位级别：博士专业：电磁场与微波技术指导教师：洪伟20090819东南人学博二l：学位论文关键词：移动通信射频技术融合相位噪声频率源功率放大器线性化技术软件无线电移动网状网IlABSTRACTINVESTIGATIoNSoNKEYRFTECHNoLoGIESANDCoNVERGENCEINMoBILECoMMUNIC·订IoNPh．DCandidate：JIANGWbiSupervisor：Prof．HONGWeiStateKeyLab．ofMillimeterWaves，

2、Dept．ofRadioEngineeringSchoolofInformationScienceandEngineeringSoutheastUniversity,Nanjing，210096，P．R．ChinaWiththerapiddevelopmentofmobilecommunication．higherspectrumefficiencyandsystemcapacityareexpected，whichsequentiallyresultsinhi【gberperformancerequirementsonRFsystemofmo

3、demcommunicationsystems．Inthefirstpartofthisthesis．itiSfocusedonthedesignandimplementationoflowphasenoisefrequencysynthesizerandhighlinearitypoweramplifierwhicharetwokeycomponentsinRFsystem．Withrespecttodifierentdemandsofcdma2000basestations，thecorrespondingRFsub—systemsared

4、eveloped．Withtheappearanceofdifferentnewmobilecommunicationtechnologies，thecoexistingandconvergenceofdifferentsystemsbecomeaveryimportantissue．Therefore，howtoconvergethesetechnologiesiSbecomingatrendofresearch．Aschemeofdigitalmulti—modebasestationRFplatformisproposed，whichis

5、basedonsoftwaredefinedradio(SDR)，thecorrespondingsoftwareandhardwareareputintorealization．I．Themainandinnovativeachievementsoftheresearchareshowedbelow：Acomparativetestmethodoffrequencysynthesizerdesignisproposed，itisalsoasimpleandconvenientmethodforengineeringpractice．Thena

6、wideuniversality,highintegration，goodperformance，debuggingfreemoduleisdeveloped，whichhasbeenalreadyappliedtocdma2000basestationsystemsinbatches．Forthelinearizationofpoweramplifiers，itisconcentratedontheanalogpre—distortiontechnique．Threedifferentsolutionsareproposedandimplem

7、ented，andgoodperformanceshavebeenachieved．Withrespecttobroadbandhi曲一poweramplifierworkingat25％relativebandwidth，thewidebandanalogpre·distortionschemetakestheIMD3improvementof4—17dBintorealization．The80WGSMandthe40Wcdma2000analogpre-distortionlinearpoweramplifierhavebeenequip

8、pedintocommercialmobilenetworksdevices．ForthedifferentRFsub-systemsdemandsi