讲座简介xjtlu课件ee202lecture1.pptx

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讲座简介xjtlu课件ee202lecture1.pptx

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Lecture1:Introduction

XJTLUEE202AnalogueandDigitalCommunication(I)

PrerequisitesEEE203ContinuousandDiscreteTimeSignalsandSystemEEE204ContinuousandDiscreteTimeSignalsandSystemMTH013Calculus(ScienceandEngineering)MTH008MultivariableCalculus(ScienceEngineering)MTH007LinearAlgebraMTH101EngineeringMathematicsIMTH102EngineeringMathematicsIIMTH201EngineeringMathematicsIII

ContentofthismoduleIntroductionSignalandsystemsModulation/Demodulation:analogueDigitisation:sampling,quantisationBasebandtransmission/receptionofdigitalsignalRandomvariablesandprocessNoise

mendedTextsSimonHaykin,MichaelMoher,Introductiontoanalogueanddigitalcommunications”,,JohnWileySons,2ndedition2007.SimonHaykin,MichaelMoher,“Communicationsystems”,5thedition,internationalstudentversion,JohnWileySons,2010.

StructureClasses 2nd Semester 20 hoursoflectures 6 hourstutorialclasses 6 hourslabAssessment 20% Experiment–Modulation80% FinalexaminJune

ExamplesofCommunicationSystems

Whatweretheydoing

TelephoneSwitchingCentre

Morden3GNetwork

CommunicationSystem

CommunicationsSystemInformationSourceInformationmaytakemanyforms:data,image,voice,videoTransmittterProcessesinformationintoaformsuitablefortransmissionModulatesinformationontowaveformwhichwillpropagateChannelRelaysinformationbetweenlocations(possiblycorruptsit)ReceiverMustreconstructtransmittedinformationfromreceivedwaveformasaccuratelyaspossible

GuidedElectromagneticWaveChannel eg.wire,coaxialcable,opticalfiberetcElectromagneticWavePropagationChannel eg.wirelessbroadcastchannels,mobileradiochannel,satelliteetcTwoTypesofChannel

BasebandvsBandpassThepurposeofacommunicationsystemistotransmitinformationsignals(basebandsignals)throughacommunicationchannel.Thetermbasebandisusedtodesignatethebandoffrequenciesrepresentingt