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Assume that m(t)=10 cos 500t and c(t) = cos 5000t . In DSB-SC, the modulation and demodulation processes are shown in block diagrams in Figure 1. (b) (c) (d) (e) m(1) Modulating signal ²0 Modulated signal PDBS-SC (1) Carrier signal r(t) 4 (a) DSB-SC modulator Received signal d (t) c'(t) (b) DSB-SC Demodulator Figure 1. DSB-SC modulator and demodulator. (a) Derive the expressions in frequency-domain, and sketch the corresponding spectrum, of signals at points 1, 2, 3, 4, 5, 6, and 7. Assume that the transmitted signal is received at the receiver with no channel effects. Low-pass filter o(t) Find the bandwidth of the modulating and modulated signals. What modifications do the above DSB-SC circuit need to go through so that the resultant modified circuit will operate as an Am circuit? Draw the equivalent AM circuit. Do you see any advantage of using AM over DSB-SC circuits? Mention an application of AM over DSB. Find the bandwidths of both AM and DSB modulated waves.

Assume that m(t)=10 cos 500t and c(t) = cos 5000t . In DSB-SC, the modulation and demodulation processes are shown in block diagrams in Figure 1. (b) (c) (d) (e) m(1) Modulating signal ²0 Modulated signal PDBS-SC (1) Carrier signal r(t) 4 (a) DSB-SC modulator Received signal d (t) c'(t) (b) DSB-SC Demodulator Figure 1. DSB-SC modulator and demodulator. (a) Derive the expressions in frequency-domain, and sketch the corresponding spectrum, of signals at points 1, 2, 3, 4, 5, 6, and 7. Assume that the transmitted signal is received at the receiver with no channel effects. Low-pass filter o(t) Find the bandwidth of the modulating and modulated signals. What modifications do the above DSB-SC circuit need to go through so that the resultant modified circuit will operate as an Am circuit? Draw the equivalent AM circuit. Do you see any advantage of using AM over DSB-SC circuits? Mention an application of AM over DSB. Find the bandwidths of both AM and DSB modulated waves.

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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Please solve d) and f) only showing all the stepd in detail

Assume that m(t) = 10 cos 500t and c(t) = cos 5000t . In DSB-SC, the modulation and demodulation processes are shown in block diagrams in Figure 1. (b) (c) (d) (e) m(1) Modulating signal ²0 Modulated signal PDBS-SC (1) Carrier signal r(t) 4 (a) DSB-SC modulator Received signal d (t) c'(t) (b) DSB-SC Demodulator Figure 1. DSB-SC modulator and demodulator. (a) Derive the expressions in frequency-domain, and sketch the corresponding spectrum, of signals at points 1, 2, 3, 4, 5, 6, and 7. Assume that the transmitted signal is received at the receiver with no channel effects. Low-pass filter o(t) Find the bandwidth of the modulating and modulated signals. What modifications do the above DSB-SC circuit need to go through so that the resultant modified circuit will operate as an AM circuit? Draw the equivalent AM circuit. Do you see any advantage of using AM over DSB-SC circuits? Mention an application of AM over DSB. Find the bandwidths of both AM and DSB modulated waves.
Transcribed Image Text:Assume that m(t) = 10 cos 500t and c(t) = cos 5000t . In DSB-SC, the modulation and demodulation processes are shown in block diagrams in Figure 1. (b) (c) (d) (e) m(1) Modulating signal ²0 Modulated signal PDBS-SC (1) Carrier signal r(t) 4 (a) DSB-SC modulator Received signal d (t) c'(t) (b) DSB-SC Demodulator Figure 1. DSB-SC modulator and demodulator. (a) Derive the expressions in frequency-domain, and sketch the corresponding spectrum, of signals at points 1, 2, 3, 4, 5, 6, and 7. Assume that the transmitted signal is received at the receiver with no channel effects. Low-pass filter o(t) Find the bandwidth of the modulating and modulated signals. What modifications do the above DSB-SC circuit need to go through so that the resultant modified circuit will operate as an AM circuit? Draw the equivalent AM circuit. Do you see any advantage of using AM over DSB-SC circuits? Mention an application of AM over DSB. Find the bandwidths of both AM and DSB modulated waves.
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