A-The samples è analog signal s(t) = 10 cos (20 pi't) cos (200 pi*t) is sampled at the r rate a- The maximum frequency component present in the analog signal. b-Nyquist rate. per seconds. Determine the following: B-An analog signal having single frequency as 3 kHz is sampled with 5 kHz signa Describe its frequency spectrum. What will be the output if the sampled signals a passed through a low-pass filter having cutoff frequency at 2.5 kHz? Q21 A-Di of Tf the
A-The samples è analog signal s(t) = 10 cos (20 pi't) cos (200 pi*t) is sampled at the r rate a- The maximum frequency component present in the analog signal. b-Nyquist rate. per seconds. Determine the following: B-An analog signal having single frequency as 3 kHz is sampled with 5 kHz signa Describe its frequency spectrum. What will be the output if the sampled signals a passed through a low-pass filter having cutoff frequency at 2.5 kHz? Q21 A-Di of Tf the
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![A-The analog signal s(t) = 10 cos (20 pit) cos (200 pi*t) is sampled at the rate of 250
samples per seconds. Determine the following:
a- The maximum frequency component present in the analog signal.
b-Nyquist rate.
B- An analog signal having single frequency as 3 kHz is sampled with 5 kHz signal.
Describe its frequency spectrum. What will be the output if the sampled signals are
passed through a low-pass filter having cutoff frequency at 2.5 kHz?
Q2] A-Discrete samples of an analog signal are uniformly quantized to PCM. If the
maximum value of the analog sample is to be represented within 0.05%
B- Show that the signal-to-quantization noise ratio in an n-bit binary PCM system,
accuracy, find the minimum number of binary digits required per sample.
where n is the number of bits uniquely assigned to each of the L quantization
levels (L = 2n) is 1.76+6n dB with a sinusoidal analog signal input.
15
Q3] A- A delta modulator system is designed to operate at fi ve times the Nyquist
rate for an analog information signal band-limited to 3 kHz. The quantizing
step-size is 40 mV. Determine the maximum allowable amplitude of input
analog signal for which the delta modulator does not experience slope-
overload distortion.
B-Compute the Signal-to-quantization noise ratio (So/Nq) for PCM and DM
system for the speech signal which has a bandwidth of 3200 Hz. Assume n=2
in a code-word. Comment on the result.
Q4] A- Given the binary data sequence 1 1 1 0 0 1 0, outline the transmitted
sequence of rectangular pulses using the line coding techniques or digital
data signaling formats as (a) unipolar RZ, (b) polar NRZ, (c) polar RZ, (d)
Manchester, and (e) bipolar RZ-AMI.
B- The binary data 101 10001 is transmitted over a baseband channel. The line-
coding waveforms illustrated in Figure 1. Could you explain the line coding
for the three waveforms? If yes, Explain?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fe18dead6-3f28-4ef1-ae8c-3ae1f0415b5f%2Fb5690036-fe81-43f5-8c75-15ebff46afaf%2F6k6jk4t_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A-The analog signal s(t) = 10 cos (20 pit) cos (200 pi*t) is sampled at the rate of 250
samples per seconds. Determine the following:
a- The maximum frequency component present in the analog signal.
b-Nyquist rate.
B- An analog signal having single frequency as 3 kHz is sampled with 5 kHz signal.
Describe its frequency spectrum. What will be the output if the sampled signals are
passed through a low-pass filter having cutoff frequency at 2.5 kHz?
Q2] A-Discrete samples of an analog signal are uniformly quantized to PCM. If the
maximum value of the analog sample is to be represented within 0.05%
B- Show that the signal-to-quantization noise ratio in an n-bit binary PCM system,
accuracy, find the minimum number of binary digits required per sample.
where n is the number of bits uniquely assigned to each of the L quantization
levels (L = 2n) is 1.76+6n dB with a sinusoidal analog signal input.
15
Q3] A- A delta modulator system is designed to operate at fi ve times the Nyquist
rate for an analog information signal band-limited to 3 kHz. The quantizing
step-size is 40 mV. Determine the maximum allowable amplitude of input
analog signal for which the delta modulator does not experience slope-
overload distortion.
B-Compute the Signal-to-quantization noise ratio (So/Nq) for PCM and DM
system for the speech signal which has a bandwidth of 3200 Hz. Assume n=2
in a code-word. Comment on the result.
Q4] A- Given the binary data sequence 1 1 1 0 0 1 0, outline the transmitted
sequence of rectangular pulses using the line coding techniques or digital
data signaling formats as (a) unipolar RZ, (b) polar NRZ, (c) polar RZ, (d)
Manchester, and (e) bipolar RZ-AMI.
B- The binary data 101 10001 is transmitted over a baseband channel. The line-
coding waveforms illustrated in Figure 1. Could you explain the line coding
for the three waveforms? If yes, Explain?
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