Answered: Two 4000 rad/s bandlimited signals such…

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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Two 4000 rad/s bandlimited signals such as m1(t) and m2(t) are transmitted simultaneously over a channel with the transfer function H(w) as shown below. The signal at point C is a signal with frequency wc>10000 rad/s. modulates the carrier signal. The modulated signal at point D is transmitted through the channel whose transfer function is given below:
According to this;
a) Draw the frequency spectrum of the signals at points A, B, C and D.
b) Since the modulated signal at the D point consists of two suppressed double sideband amplitude modulated signals, determine the minimum value for the required channel bandwidth W.
c) According to the W value determined in the previous point, in order for the modulated signal at the D point to be transmitted through the channel with the H(w) transfer function, the wc frequency value must be set.
Please specify.

M,(w)
K
2cos(10000nt)
mi(†) ·
channel
-4000 0 4000
H(w)
M2(w)
K
2cos(wct)
m2(t)-
В
W
-4000 0 4000
2cos(18000nt)

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