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Unformatted text preview: changing the sign – (+) and plot s(n) and the spectrum. iv) Obtain x1(n) = s(n) c1(n) for the both signs (-,+). Plot its magnitude spectrum. v) Desing a LowPass Filter using Matlab’s fir1 with N=8 and W=0.3. Plot the filters magnitude response. vi) Using conv command lowpass filter x1(n) to obtain v1(n). Plot v1(n) and its spectrum. Comment on the results. vii) Repeat iii),iv),v),vi) for VSB modulation. In order to obtain mq(t): a) take Fourier transform of m(t) to obtain M(k), b) Pass M(k) through a filter with the transfer function H(k)=(k-1)/25 for k=1,…,26, H(k)=1, for k=27,…,128, H(k)=-1, for k=129,…,231and H(k) = (k-257)/25 for k=232,…,256. c) Take inverse Fourier transform. viii) Comment on the results....
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This note was uploaded on 05/24/2011 for the course EE 324 taught by Professor Emreaktaş during the Spring '11 term at Hacettepe Üniversitesi.
- Spring '11