PDMA移動(dòng)臺(tái)前端的分析、設(shè)計(jì)與實(shí)驗(yàn).pdf

1、華中科技大學(xué)碩士學(xué)位論文PDMA移動(dòng)臺(tái)前端的分析、設(shè)計(jì)與實(shí)驗(yàn)姓名：陳長根申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：電磁場(chǎng)與微波指導(dǎo)教師：馬洪2002.4.30華中科技大學(xué)碩士學(xué)位論文AbstractThethirdgenerationmobilecommunicationiSakindofspreadingspectrum，hastwocharacteristiCS：pseudocodemodulationandSignalcorrelationTheS

2、uccessofthirdgenerationmobilecommunicationwilldependheavilyontheirabilitytoimmuniseinterferer，noise，multipathattenuation，low—powerspectrumdensity，etcNow，thetechnologjesofthirdgenerationmobilecommunicationhavemostlYtWOspe

3、cifications：cdma2000andwcdmaForcdma2000andW—cdma，theirairinterfaceuseCircuitswitch，andprovidemain]YvoicecommunicationTherefore，theirabilityofhigh—speeddatacor[1fflunicationwaslimitedInordertoovercomethesedisadvantages，br

4、oad—bandwirelessIPcommunicationwasbroughtforwardbyWuhanhanwangtechn0109iesIncWhichcanprovidehigh—speedwirelessInternetservicesbeyondtheperformanceoftwogenerationandthirdgeneralionAccordingtobroad—bandwirelessIPcommunicat

5、ion，thiSthesesmainlydescribesRFrequirementsforPDMAmobi1eequirementandmodulator／demodulatordesign、experimentandtransmitterandAGCalgorithmssimulationFirst。system一1evelspecifications，mostlYiSfront—endoftransceiverspecificat

6、ions，includingNF，IIP“ACSandspurious，ACLR，EVM，etc。Second，modulatorschemeandbandwidthstronglyinfluencethechoiceofreceivetstructureBasedonsystem—levelconsiderations，selectionoftransceiverstructuresarepresented，includinghete

7、rodyne，directconversion，image—reject，andlow—IFtopologiesThird，algorithmsplayanimportantroleindigitalcommunicationsystems，especially，inreceiveralgorithmsThisthesisdiscussestheperformanceofreceiverAGC’Salgorithmwhichwasimp

8、lementedwilhMATLAB，asimulationtoolalreadywidelyusedforthedevelopmentandevaluationofcommunicationalgorithmsForth，transmittersforIMT2000／FDDarespecifiedbyterms1ikeEVMandACLRBothfactorsarerelativelyeasytomeasure，buttheyaren