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Specify the frequency response characteristics of a VSB filter that passes the lower sideband and the...

Specify the frequency response characteristics of a VSB filter that passes the lower sideband and the first frequency component of the upper sideband of a DSB modulated signal with the message signal given by m(t)=10cos(3000(pi)t)+20cos(6000(pi)t) . The carrier signal has an amplitude of 20 and a frequency of 250 kHz.
a. Write the expression for the DSB signal.
b. Write the expression for the single sided spectrum of the DSB signal
c. Sketch the spectrum
d. Give the specifications for the VSB filter

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