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1、維普資訊http://www.cqvip.com■E_______㈣智能天線的原理和實(shí)現(xiàn)ThePrincipleofSmartAntennaTechnologyandItsImplementation季磷LfShi-he：唐電信北京1C313~3industri~lGroup，Beijing100083，China)摘要：近年來(lái)，智能天線掛木已經(jīng)成為移動(dòng)通信中最具有吸引力的掛術(shù)之一。在無(wú)線基站使用一個(gè)天線陣和基于基帶數(shù)字信號(hào)處理掛術(shù)，對(duì)基站的接受和發(fā)射波束進(jìn)行白適應(yīng)的賦形，1Introductionde
2、velopinthe1960sTheobject可以大大降低秉統(tǒng)內(nèi)的干擾，提高系統(tǒng)容量，Thecoretechnologyof3Gisoftheresearchonthistechnol—降低發(fā)射功率并提高接收是敏度。在大大提高radiotransmissiontechnologyOgYistheradarantennaarray系統(tǒng)性能的同時(shí)，還可以降低設(shè)備的成本此智能天線首先使用在I"D-SCDMA東統(tǒng)中，也能使fRTT】．Itmaywellbesaidthatwithaviewtoenhancei
3、ogtheIMT·2000basjcallyencom．performanceofradarandthe用在0#t,lAFDD東統(tǒng)中本文對(duì)移動(dòng)通信中的智能天線技術(shù)的原理和在TD--SCDMA系統(tǒng)中的實(shí)現(xiàn)passesalthetechnicaladvancescaPabiIityofeIectronic作T簡(jiǎn)要介紹inteIecommunicationsjncountermeasureHowever，itisAbstract：Inrecent∞r(nóng)8，smartantennatechno1．the1990s
4、．Thecompetitioninnotuntiltheearly1990sthatjtogyhasbecomeoneofthemostattractivetech．standardsisalsoacompetitiontookofonthebasisofmicro．nologiesinmobilecommunicationsintechnologyOnMay5，2000．Radiobase．Computertechnologyanddigitalstationscanreducemateriallyj
5、medeii~nceinthetheITUfinallyrecognizedlMT_signalprocessingtechnologyInsystem，expandthesystemcepaclty．1owerthe2000RTT,ofwhichCDMAisathemid-1990s，peopleintheb'ansmltpowerandimproves~nsibilitybyshapingmainstreamtechnologylAtan—UnitedStatesandChinaconsid．the
6、ir~ceJveandtransmitbeamsw“henantennaotherITUmeetingofMarch2000，eredusingsmanantennatech-arrayandbasebanddigitalsignalprocessingmuchattentionwaspaidtothenologyinradio-communicationst~chnology．Thisn~suItsingreatlyenhancedsys-useofsmartantennatechnologysyst
7、emsln1997．theXinweiternperformanceandloweredequipmentcostinCDMAsystems．a(chǎn)ndtheAu．TelecomTechnologiesCompany,SmartantennasallBfirstLinedinTD-SCDMA．sys-gustITUmeetingwentfurthertoBeijingundertheChinaAcademyternsandcanalsobeusedInCDMAFDDeystern~．discusstheus
8、eofthesmartan．ofTelecomTechnology(CI丌】Thisarticlegivesabnd∞a。10dOnoftheprlncipletennainCDMAsystemsThisissuccessfuIlydeveIopedanofsmartantennatechnologyandytsimplementa．a(chǎn)clearsignindicatingthedirec．SCDMAradiosubscriberloopt
