Question: ConsideranOFDMsystem.Explainthat: ( 1 ) whydoweneedtoaddcyclic pre xtotheIFFToutput? ( 2 ) Givenachannelh = [ h ( 0 ) h ( 1 ) h ( L )

ConsideranOFDMsystem.Explainthat: (1)whydoweneedtoaddcyclic pre xtotheIFFToutput?(2)Givenachannelh=[h(0)h(1) h(L)],L>1what istheminimumnumberofcyclicpre xsymbolsneeded?whyisthat?(3)Explainhow youwoulddeterminethespacebetweenneighboringsubcarriersinanOFDMsystem.

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