Two signals m1(t) and m2(t), both band-limited to 5000 Hz, are to be transmitted simultaneously over a channel by the multiplexing scheme shown below. The signal at point b is the multiplexed signal, which then modulates a carrier. The modulated signal at point c is transmitted over a channel. M1(f) m¡(t) b -5000 To 5000 Σ M2(f) m2(t) a 2 cos 40000TTI -5000 5000 f→ 2 cos 30000Tt (a) Sketch signal spectra at points a, b, and c with frequencies clearly marked. (b) What are the bandwidth of the signals at points a, b, and c, respectively? (). Plot a receiver diagram to recover signals mi(t) and m2(t) from the modulated signal at point c.
Two signals m1(t) and m2(t), both band-limited to 5000 Hz, are to be transmitted simultaneously over a channel by the multiplexing scheme shown below. The signal at point b is the multiplexed signal, which then modulates a carrier. The modulated signal at point c is transmitted over a channel. M1(f) m¡(t) b -5000 To 5000 Σ M2(f) m2(t) a 2 cos 40000TTI -5000 5000 f→ 2 cos 30000Tt (a) Sketch signal spectra at points a, b, and c with frequencies clearly marked. (b) What are the bandwidth of the signals at points a, b, and c, respectively? (). Plot a receiver diagram to recover signals mi(t) and m2(t) from the modulated signal at point c.
Introductory Circuit Analysis (13th Edition)
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ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
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Question
![Two signals m(t) and m2(t), both band-limited to 5000 Hz, are to be
transmitted simultaneously over a channel by the multiplexing scheme shown below. The signal
at point b is the multiplexed signal, which then modulates a carrier. The modulated signal at
point c is transmitted over a channel.
M¡(f)
m¡(t)
b
-5000
To
5000
f →
Σ
M2(f)\
m2(t)
а
2 cos 40000TI
-5000
5000
2 cos 30000nt
(a)
Sketch signal spectra at points a, b, and c with frequencies clearly marked.
(b)
What are the bandwidth of the signals at points a, b, and c, respectively?
(c)
Plot a receiver diagram to recover signals m1(t) and m2(t) from the modulated
signal at point c.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F03f00886-5b68-487c-98b2-407f8302b5ec%2F6d25b1f0-8adf-478c-84e8-1e0cff524add%2Fmin0h23_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Two signals m(t) and m2(t), both band-limited to 5000 Hz, are to be
transmitted simultaneously over a channel by the multiplexing scheme shown below. The signal
at point b is the multiplexed signal, which then modulates a carrier. The modulated signal at
point c is transmitted over a channel.
M¡(f)
m¡(t)
b
-5000
To
5000
f →
Σ
M2(f)\
m2(t)
а
2 cos 40000TI
-5000
5000
2 cos 30000nt
(a)
Sketch signal spectra at points a, b, and c with frequencies clearly marked.
(b)
What are the bandwidth of the signals at points a, b, and c, respectively?
(c)
Plot a receiver diagram to recover signals m1(t) and m2(t) from the modulated
signal at point c.
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