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DSB: Write the code for an m-file (script) to generate a DSB signal. The modulating (message) signal...

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Electrical Engineering

DSB:

Write the code for an m-file (script) to generate a DSB signal.The modulating (message) signal is a single tone signal withfrequency 1kHz and the carrier frequency is 30kHz. Time Vector:3001 points over range from 0 to 3ms (3 cycles of the modulatingsignal). Plot your original message signal both in time and itsspectrum. (Note: use the cosine functions for your signals). Inyour report you should include the plots for the modulated signalin time and for the spectrum of the modulated signal.

AM:

For the same message signal and same carrier as in part a. writethe code for an m-file to generate an AM signal. Do simulations forthe following percentages of modulation: 1. 25% 2. 50% 3. 100% and4.125%. In your report you should include the plots for themodulated signal in time and for the spectrum of the modulatedsignal for each of the 4 cases.

Discuss the results relative to the modulation index m.

SSB:

Use Matlab to implement a 4 pole-pair Butterworth band-passfilter to select the lower frequency component of the DSB modulatedsignal in part a. Plot the signal at the output of the filter intime and its spectrum.

Answer & Explanation Solved by verified expert
4.0 Ratings (451 Votes)
Dear userPlease find the Code attachedCodeclcclear allclose all Problem 1fm1e3fc30e3t011e63e3m1cos2pifmts1cos2pifctsubplot211plottmtitleMessage Signal time domainsubplot212plot0lengthm11e6lengthmabsfftmtitleFreq Domain Problem 1 DSBmodulatedms DSB mtctfigure2subplot211plottmodulatedtitleModulated Signal time    See Answer
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