以下作业请编程实现，推荐使用matlab，也可以使

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1、PrinciplesofCommunicationsProgrammingProject,2011I.AimoftheProjectTostudytheprinciplesandanalyzetheperformancesofvariousdigitalmodulationtechniques(2ASK,2FSK,2PSKand2DPSK).II.ContentsoftheProject:1.Generatearandombinarysequenceconsistingof0and1,andmodulateitatacertaincarrierfrequencyusing2ASK,2FSK,2

2、PSKand2DPSK.Themodulationparametersareuptoyourowndesign.Pleaseplotthesignalwaveformofthefirst8bitsintimedomainforeachmodulation.2.TransmittheabovefoursignalsoveranadditiveGaussianwhitenoisechannel.Pleasedrawthefunctionalblockdiagramsofbothcoherentandnon-coherentreceivers,anddeterminethemathematicale

3、xpressionofobservationbeforedecisionatthereceiverforeachofthem.Ifasignalcannotbedemodulatedusingnon-coherentreceiver,pleaseexplain.3.Accordingtotheresultsin2),programtoimplementthedecisionprocessatthereceiver.Bycomparingthedecisionresultswiththeoriginalinformationbits,findoutthebiterrorratio(BER,)at

4、differentsignal-to-noiseratio(SNR)perbit.Plotthecurvesofversus.4.PlotthetheoreticalvaluesofBERinthesamefigureasthesimulationresults.Pleasecompareanddiscussonthesimulationresultsandtheoreticalvalues.Pleasealsodiscusstheperformancedifferenceamongthedifferentmodulationtechniques.Note1:Inthesimulationpr

5、ogram,band-limitedGaussiannoisecanbeusedtoapproximatethewhiteGaussiannoise.Assumethattheband-limitedGaussiannoisehasabandwidthofHzandwithauto-correlationfunctiongivenby.IfitissampledatarateHz,thenallthesamplevaluesofthenoiseareindependentwithzero-meanandvarianceof.Note2:Therelationshipbetweensamplef

6、requencyandcarrierfrequencymustsatisfy.Note3:Itisrecommendedthattherangeofinthesimulationisfrom0dBto10dBandtheintervalofadjacentvaluesis1dB.Note4:Sufficientnumberofsimulationrunsareneededinordertoobtainreliableestimationof.I.RequirementoftheProject:1.Thisprojectrequirestwostudentsworkingasateam.2.Yo

7、ucanuseanyprogramminglanguage.ButMATLABisrecommended.Otherprogramminglanguages,suchasCandC++,arealsoacceptable.However,youarenotallowedtouseanyexistingcommunicationmodulesuchasthoseinSIMULINK.3.Youmus