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Unformatted text preview: 5. Find Z transforms of x(n) , h(n), and channel output y(n) in problems 3 and 4. Explain the results of 3 and 4 in terms of the formula Y(z)=H(z)X(z) . 6. Let sig1 = [1 2 3 4 5] and sig2 = [1 1]. Let s_out be the convolution of sig1 and sig2. Let H1(w), H2(w), and Hout(w) be frequency responses of sig1,2, and _out respectively. Use Matlab to compare graphically the spectrum magnitude H1(w)*H2(2) and Hout(w). (means absolute value, i.e. magnitude only, no phase) . Since the two magnitudes are expected to be equal, use different line patterns to plot those. (Hint  use 'freqz' to find H(w). If you have no Signal Processing toolbox, make your own routine by using DTFT definition. The latter is shown in the lectures' presentation. )...
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This note was uploaded on 11/11/2009 for the course ECE 670377 taught by Professor Wolf during the Winter '07 term at UCSD.
 Winter '07
 WOlf

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