东南大学通信原理考试大纲

Outline

2012.6

Chapter0

Basicelementsofcommunicationsystems(p.2)

Primarycommunicationresources(p.3)

Themobileradiochannel(p.18)

Blockdiagramofdigitalcommunicationsystem(p.22)

Shannon’sinformationcapacitytheorem(p.23-24)

Chapter1

Definitionandbasicconceptsofrandomprocess

Stationaryandnon-stationary

Mean,correlation,andcovariancefunctions,themean-squarevalueandvariance

Theconceptofergodicprocess

Transmissionofarandomprocessthroughalineartime-invariantfilter

Themean,autocorrelationfunction,andmean-squarevalueofY

Powerspectraldensity

Definition(Equ.1.38)

Input-outputrelation(Equ.1.39)

Einstein-Wiener-Khintchinerelations(Equ.1.42,1.43)

Properties

Gaussianprocess(Equ.80)

Conceptofwhitenoise

Representationofnarrowbandnoise

Thecanonicalform(Equ.1.100)

Propertiesofthein-phaseandquadraturecomponents(p.65-66)

Representationusingenvelopandphasecomponents(Equ.1.105-1.107)

BasicconceptsofRayleighdistributionandRiciandistribution

Uncorrelatedandstatisticallyindependent(p.58)

Uncorrelated:Covarianceis0

Statisticallyindependent:definedbyjointprobabilitydensityfunction

Chapter2

Conceptsofamplitudemodulationandanglemodulation(FMandPM)

AM

AMsignal(Equ.2.2andFig.2.3),andtheamplitudesensitivityka

Conditionsofcorrectdetection(p.90)

SpectrumofAMwave(Equ.2.5andFig.2.4)

TransmissionbandwidthBT=2W

VirtuesandlimitationsofAM

Linearmodulationschemes

Thegeneralform(Equ.2.7)

DSB

DSBsignal(Equ.2.8andFig.2.5)

SpectrumofDSBwave(Equ.2.9andFig.2.6)

Coherentreceiver

Basicknowledgeofcostasreceiver

Basicconceptofquadrature-carriermultiplexing

BasicconceptsofSSBandVSB

Conceptsofmixer(Fig.2.16)

ConceptsofFDM

Definitionsofanglemodulation

FM

Anonlinearmodulationprocess

Single-toneFMmodulation

DefinitionsofDf,b

BasicknowledgeofnarrowbandandwidebandFM

Transmissionbandwidth

Carson’srule(Equ.2.55)

Knowtheuniversalcurve

Demodulation

Frequencydemodulation(adirectmethod)(Fig.2.30)

Knowphase-lockedloop(anindirectmethod)

DefinitionsofSNR’s

(SNR)I,(SNR)O,and(SNR)C

Figureofmerit(Equ.2.81)

ComparisonoffigureofmeritsbetweenDSB-SC(Equ.2.88)andAM(Equ.2.95)

BasicconceptsofthresholdeffectofAM(p.138)andFMsystems(p.149)

Chapter3

Sampling

Definitionsofthesamplingperiodandsamplingrate

Instantaneoussamplingandtheidealsampledsignal(Equ.3.1-3.3,Fig.3.2)

Derivationoftheinterpolationformula(Equ.3.4-3.9)

ThesamplingtheoremanddefinitionsofNyquistrateandNyquistinterval

Themethodsofcombataliasingeffect(p.187)

PAM

ThedifferencebetweenPAMandnaturalsampling

Theconceptof“sampleandhold”

ThePAMsignal(Equ.3.10-3.19)

Theapertureeffect

KnowPPMandPDM

Quantization

Quantizationnoiseand(SNR)Oofauniformquantizer(Equ.3.25-3.33)

PCM

Basicconcepts

Discreteinbothtimeandamplitude

Sampling,quantizing,andencoding

Non-uniformquantizers

m-lawandA-law

Piecewiselinearapproximationtothecompandingcircuit

Fivetypesoflinecodesandtheirwaveforms

Differentialencoding

Maximumlikelihooddecoding

Theconceptofsignalconstellation

Themaximumlikelihoodrule(Equ.5.55),forAWGNchannel,theruleisEqu.5.59and5.61

EquivalenceofcorrelationandmatchedfiltersampledattimeT

Probabilityoferror

Knowtheinvariancetorotationandtranslation

Theconceptoftheminimumenergysignals

Knowhowtouseunionboundtoderiveaupperbound(p.332–335)(Equ.5.89)

Knowthatthereis,ingeneral,nouniquerelationshipsbetweensymbolerrorprobabilitiesandBER

Chapter6

BasicconceptsofkeyingandASK,FSK,andPSK

Therelationshipbetweenbasebandandpassbandpowerspectraldensity(Equ.6.4)

Bandwidthefficiency(Equ.6.5)

Thepassbandtransmissionmodel

CoherentPSK

BPSK

Basicdefinitions(Equ.6.8-6.14,Fig.6.3)

Errorprobability(Equ.6.20)

QPSK

Basicdefinitions(Equ.6.23-6.27)

Errorprobability(Equ.6.34,6.38)

Generationanddetection(Fig.6.8)

M-PSK

Basicdefinitions(Equ.6.46)

Bandwidthefficiency

KnowthatthepowerspectraofM-PSKhasnodiscretefrequencycomponent

M-QAM

Basicdefinitions(Equ.6.53-6.55)

QAMsquareconstellations(Fig.6.17)

CoherentFSK

CoherentBFSK

Basicdefinitions(Sunde’sFSK)(Equ.6.86-6.91,Fig.6.25)

Errorprobability(Equ.6.102)

KnowthatthepowerspectraofBFSKhasdiscretefrequencycomponents

MSK

TheconceptofCPFSK

TheconceptofMSK

Thephasetrellis

Signal-spacediagram(Fig.6.29)

E