18. A television signal (video and audio) has a bandwidth of 4.5 MHz. This signal is sampled, quantized, and binary coded to obtain a PCM signal. (a) What is the sampling rate if the signal is to be sampled at a rate 20% above the Nyquist rate. (b) If the samples are quantized into 1024 levels, determine the number of binary pulses required to encode each sample. (c) Determine the binary pulse rate (bits per second) of the binary-coded signal, and the minimum bandwidth required to transmit this signal.
18. A television signal (video and audio) has a bandwidth of 4.5 MHz. This signal is sampled, quantized, and binary coded to obtain a PCM signal. (a) What is the sampling rate if the signal is to be sampled at a rate 20% above the Nyquist rate. (b) If the samples are quantized into 1024 levels, determine the number of binary pulses required to encode each sample. (c) Determine the binary pulse rate (bits per second) of the binary-coded signal, and the minimum bandwidth required to transmit this signal.
Introductory Circuit Analysis (13th Edition)
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Author:Robert L. Boylestad
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Chapter1: Introduction
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Transcribed Image Text:18. A television signal (video and audio) has a bandwidth of 4.5 MHz. This signal is sampled,
quantized, and binary coded to obtain a PCM signal.
(a) What is the sampling rate if the signal is to be sampled at a rate 20% above the Nyquist rate.
(b) If the samples are quantized into 1024 levels, determine the number of binary pulses required
to encode each sample.
(c) Determine the binary pulse rate (bits per second) of the binary-coded signal, and
the minimum bandwidth required to transmit this signal.
19. An analog signal is sampled at the Nyquist rate fs
20K and quantized into L=1024 levels.
Find Bit-rate and the time duration Tb of one bit of the binary encoded signal.
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