4.2-8 Two signals m (f) and m2(t), both band-1limited to 5000 Hz, are to be transmitted simultaneouslyover a channel by the multiplexing scheme shown in Fig. P4.2-8. The signal at point b is themultiplexed signał, which now modulates a carrier of frequency 20,000 Hz. The modulatedsignał at point c is transmitted over a channel.(a) Sketch signal spectra at points a, b, and c.(b) What must be the bandwidth of the channel?(c) Design a receiver to recover signais m1 (t) and m2(t) from the modulated signal atpoint c.M1(f)m(t)-5000io5000 f+ΣM2lf)m2{t)2 cos 40,000rI-500050002 cos 20,000rt

The data throughput capacity of any communication link is referred to as bandwidth. More information…

Answered: (a) Sketch signal spectra at points a,…

(a) Sketch signal spectra at points a, b, and c. (b) What must be the bandwidth of the channel? (c) Design a receiver to recover signais m1 (t) and m2(t) from the modulated signal at point c.

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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Question

4.2-8 Two signals m (f) and m2(t), both band-1limited to 5000 Hz, are to be transmitted simultaneously
over a channel by the multiplexing scheme shown in Fig. P4.2-8. The signal at point b is the
multiplexed signał, which now modulates a carrier of frequency 20,000 Hz. The modulated
signał at point c is transmitted over a channel.
(a) Sketch signal spectra at points a, b, and c.
(b) What must be the bandwidth of the channel?
(c) Design a receiver to recover signais m1 (t) and m2(t) from the modulated signal at
point c.
M1(f)
m(t)
-5000
io
5000 f+
Σ
M2lf)
m2{t)
2 cos 40,000rI
-5000
5000
2 cos 20,000rt

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