Evaluate the modulation dep Calculate the carrier power, Draw the block diagram mathematical equation of th Sketch the time and frequenc

Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
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A conventional amplitude modulator (AM), where m(t) is the analogue message, VDC=5
volt is an offset voltage and c(t) is the carrier signal. Let m(t) = 3 cos(2710't), and the
carrier frequency is fc =1 MHz, Answer the following questions:
1) Evaluate the modulation depth m, and mention the type of this AM system.
2) Calculate the carrier power, sideband power and the efficiency (n).
3) Draw the block diagram of this AM modulator clearly and write the
mathematical equation of this modulated signal using the above values.
4) Sketch the time and frequency domains of this AM signal showing all the required
details clearly.
5) If VDC is set to zero, what is the type of this AM system? Also re-evaluate m,
and sketch the time and frequency domains clearly.
Transcribed Image Text:A conventional amplitude modulator (AM), where m(t) is the analogue message, VDC=5 volt is an offset voltage and c(t) is the carrier signal. Let m(t) = 3 cos(2710't), and the carrier frequency is fc =1 MHz, Answer the following questions: 1) Evaluate the modulation depth m, and mention the type of this AM system. 2) Calculate the carrier power, sideband power and the efficiency (n). 3) Draw the block diagram of this AM modulator clearly and write the mathematical equation of this modulated signal using the above values. 4) Sketch the time and frequency domains of this AM signal showing all the required details clearly. 5) If VDC is set to zero, what is the type of this AM system? Also re-evaluate m, and sketch the time and frequency domains clearly.
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