Question: Rework Problem 3.8 for the message signal m(t) = 9 cos(20t) + 8 cos(60t) Data from Problem 3.8 (a) Write the equation for m n

Rework Problem 3.8 for the message signal
m(t) = 9 cos(20πt) + 8 cos(60πt)

Data from Problem 3.8

(a) Write the equation for mn(t), the normalized signal with a minimum value of -1.

(b) Determine {m2n(t)}, the power in mn(t).

(c) Determine the efficiency of the modulator.

(d) Sketch the double-sided spectrum of xc(t), the modulator output, giving the weights and frequencies of all components.

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a With mt 9 cos20t 8 cos60t the most negative value of mt 17 and falls at t 005 Therefore m n t 117 ... View full answer

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