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a. If the power of the message is 10 kW, what is the power of y(t)? b. Draw the spectrum of the modulated signal, y(t)? c. Suggest a method for detection m(t) from y(t) in details?

a. If the power of the message is 10 kW, what is the power of y(t)? b. Draw the spectrum of the modulated signal, y(t)? c. Suggest a method for detection m(t) from y(t) in details?

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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Q2) The system shown in Figure 1 is used for modulation an audio signal M(t). The output y(t) is the modulated version of the input m(t). m(t) LPF X y(t) Fc= 15KHZ. Figure 1 2 cos(3000 nt) a. If the power of the message is 10 kW, what is the power of y(t)? b. Draw the spectrum of the modulated signal , y(t)? c. Suggest a method for detection m(t) from y(t) in details? d. What is the type of modulation does system correspond to (similar results)? e. Assume the Low Pass Filter is removed, what type of modulation does correspond to? State advantage and disadvantage of this new modulation scheme compared to the scrambler?
Transcribed Image Text:Q2) The system shown in Figure 1 is used for modulation an audio signal M(t). The output y(t) is the modulated version of the input m(t). m(t) LPF X y(t) Fc= 15KHZ. Figure 1 2 cos(3000 nt) a. If the power of the message is 10 kW, what is the power of y(t)? b. Draw the spectrum of the modulated signal , y(t)? c. Suggest a method for detection m(t) from y(t) in details? d. What is the type of modulation does system correspond to (similar results)? e. Assume the Low Pass Filter is removed, what type of modulation does correspond to? State advantage and disadvantage of this new modulation scheme compared to the scrambler?
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