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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.

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)
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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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
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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