3.11 The message signal m(t) has the Fourier transform shown in Figure P-3.11(a). This signal is applied to the system shown in Figure P-3.11(b) to generate the signal y(t). 1. Plot Y(f), the Fourier transform of y(t). 2. Show that if y(1) is transmitted, the receiver can pass it through a replica of the system shown in Figure P-3.11(b) to obtain m(t) back. This means that this system can be used as a simple scrambler to enhance communication privacy.
3.11 The message signal m(t) has the Fourier transform shown in Figure P-3.11(a). This signal is applied to the system shown in Figure P-3.11(b) to generate the signal y(t). 1. Plot Y(f), the Fourier transform of y(t). 2. Show that if y(1) is transmitted, the receiver can pass it through a replica of the system shown in Figure P-3.11(b) to obtain m(t) back. This means that this system can be used as a simple scrambler to enhance communication privacy.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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![3.11 The message signal m(t) has the Fourier transform shown in Figure P-3.11(a). This
signal is applied to the system shown in Figure P-3.11(b) to generate the signal y(t).
1. Plot Y(f), the Fourier transform of y(t).
2. Show that if y(1) is transmitted, the receiver can pass it through a replica of
the system shown in Figure P-3.11(b) to obtain m(t) back. This means that this
system can be used as a simple scrambler to enhance communication privacy.
M(f)
-W
+W
(a)
m(t)
HPF
LPF
|-W, w]
y(1)
fautott = fe
A cos 2nft
A cos21(f. + W)t
(b)
Figure P-3.11
1. If the message signal in Problem 3.11 is replaced with the signal in Figure 1, or the signal
Figure 2. Answer the questions in parts 1 and 2 of the problem.
M(f) LA
M(f)
w f+
-W
Figure 1
Figure 2](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F814a3e0b-5c60-4a87-afe3-fb96784e4950%2F103166a9-3de8-4b3b-be05-94e412388ace%2Fvt4dfmc_processed.png&w=3840&q=75)
Transcribed Image Text:3.11 The message signal m(t) has the Fourier transform shown in Figure P-3.11(a). This
signal is applied to the system shown in Figure P-3.11(b) to generate the signal y(t).
1. Plot Y(f), the Fourier transform of y(t).
2. Show that if y(1) is transmitted, the receiver can pass it through a replica of
the system shown in Figure P-3.11(b) to obtain m(t) back. This means that this
system can be used as a simple scrambler to enhance communication privacy.
M(f)
-W
+W
(a)
m(t)
HPF
LPF
|-W, w]
y(1)
fautott = fe
A cos 2nft
A cos21(f. + W)t
(b)
Figure P-3.11
1. If the message signal in Problem 3.11 is replaced with the signal in Figure 1, or the signal
Figure 2. Answer the questions in parts 1 and 2 of the problem.
M(f) LA
M(f)
w f+
-W
Figure 1
Figure 2
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