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2) An analog video signal with a bandwidth of 5 MHz. is sampled at one and...
A video signal has bandwidth of 4 MHz. This signal is sampled, quantized, and binary encoded...
A video signal has bandwidth of 4 MHz. This signal is sampled, quantized, and binary encoded using the PCM technique. The video signal amplitude is uniformly distributed in the range (-2, 2). If the signal is sampled at the Nyquist rate and quantized into 512 levels: (a) Determine the bit rate. (b) Determine the signal-to-quantization-noise ratio. (©) If the signal-to-quantization-noise ratio must be increased by a factor of 16, how you can achieve that? Will this affect the bit rate?...
*5. Suppose an analog signal has an absolute bandwidth of 10 KHz. It is sampled at...
*5. Suppose an analog signal has an absolute bandwidth of 10 KHz. It is sampled at the Nyquist rate and converted to a digital signal using an A/D converter such that the output signal-to-quantization noise ratio is at least 40 dB. Using your engineering judgment, choose the number of bits for the A/D converter and determine the bit rate (i.e., the number of bits/sec).
Problem 2: An analog signal is to be converted into a PCM signal that is a binary polar NRZ line ...
Problem 2: An analog signal is to be converted into a PCM signal that is a binary polar NRZ line code. The signal is transmitted over a channel that is absolutely bandlimited to B-8 kHz. Assume that the PCM quantizer has 32 steps and that the overall equivalent system transfer function He is of the raised cosine-rolloff type with r 0.5. Find the maximum symbol rate D that can be supported over this channel without causing ISI a) c) Find...
Quantization. A continuous time signal is to be sampled at a sampling rate 8kHz. It is...
Quantization. A continuous time signal is to be sampled at a sampling rate 8kHz. It is a voltage signal that varies between 10 and -10 V. We would like the quantization noise variance to be no more than 0.09. a) Design an efficient uniform quantizer that satisfies the quantization noise variance condition. For this tell me the step size, whether it is a mid-tread or mid-riser quantizer. Tell me how many levels your quantizer has. (6 marks) b) The quantized...
4) Five audio channels each with a bandwidth of 20 kHz, are sampled at a 10% higher than the Nyqu...
4) Five audio channels each with a bandwidth of 20 kHz, are sampled at a 10% higher than the Nyquist rate and quantized using a 16 bit quantizer. These five channels are then time multiplexed. a. Find the overall bit rate of the output of multiplexer (4 Marks) and b. Find the minimum bandwidth required to transmit the output of the multiplexer when using 16-QAM with a raised cosine filter with a rolloff factor of 0.25 (2 Marks)
4) Five...
Answer all parts and show all steps please. 3323 Modern Digital and Analog Communication Question A...
Answer all parts and show all steps please.
3323 Modern Digital and Analog Communication Question A compact disc (CD) records audio signals digitally by using PCM. Assume that the audio signal bandwidth equals 15 kHz (a) If signal is sampled at the Nyquist rate and the samples are uniformly digitized into L 65,536 levels and then binary-coded, determine the number of bits required to encode a sample (b) If the audio signal has average power of 0.1 W and a...
5.2-1 A compact dise (CD) records audio signals digitlly by using PCM. Let the au bandwidth...
5.2-1 A compact dise (CD) records audio signals digitlly by using PCM. Let the au bandwidth be 15 kHz. (a) If the Nyquist samples are uniformly quantized into L 65,5 (b) If the audio signal has average power of 0.1 W and peak voltage of 1 V, find the resulting (c) Determine the number of binary digits per second (bit/s) required to encode the audico (d) For practical reasons discussed in the text, signals are sampled at a rate well...
4) a. A signal g(t) = 20 cos 50nt.cos 220nt is sampled by a pulse train...
4) a. A signal g(t) = 20 cos 50nt.cos 220nt is sampled by a pulse train of frequency 250Hz. i. Calculate the Nyquist rate for the signal g(t). (4 Marks) ii. Sketch the spectrum of the resulting sampled signal. (5 Marks) iii. Specify the minimum cutoff frequency of the ideal reconstruction filter so as to recover g(t) from its sampled signal. (3 Mark) b. A signal in the frequency range 350 to 3500Hz is limited to peak to peak swing...
(5) A PCM system encodes samples using an 8-bit ADC. In the case of peak signal...
(5) A PCM system encodes samples using an 8-bit ADC. In the case of peak signal amplitude, estimate the signal to quantization noise ratio in dB (6) The output SQNR of a 10-bit PCM was found to be insufficient at 30 dB. To achieve the desired SQNR of 42 dB, an increase to the number of quantization levels was needed. Determine the fractional increase in the transmission bandwidth required. (7) A signal x(t) band-limited to 3kHz is sampled at a...
4. There is an analog signal whose bandwidith is knowm as 25 kHz. The signal is...
4. There is an analog signal whose bandwidith is knowm as 25 kHz. The signal is sampled at a rate which is 15% higher than the Nyquist rate. The sampled data are unfomly quantized with the quantization error no larger than 0.1% of the peak magnitude of the spal. Given the avalable channel bandwidth being 100 kiz, answer the following questions why? a) The roloff factory-?3. bs the Ilary (NO2) mult-ampitude signaling necessary? b) IfM-ary (M>2) is necessary, determine the...
A video signal has bandwidth of 4 MHz. This signal is sampled, quantized, and binary encoded using the PCM technique. The video signal amplitude is uniformly distributed in the range (-2, 2). If the signal is sampled at the Nyquist rate and quantized into 512 levels: (a) Determine the bit rate. (b) Determine the signal-to-quantization-noise ratio. (©) If the signal-to-quantization-noise ratio must be increased by a factor of 16, how you can achieve that? Will this affect the bit rate?...
*5. Suppose an analog signal has an absolute bandwidth of 10 KHz. It is sampled at the Nyquist rate and converted to a digital signal using an A/D converter such that the output signal-to-quantization noise ratio is at least 40 dB. Using your engineering judgment, choose the number of bits for the A/D converter and determine the bit rate (i.e., the number of bits/sec).
Problem 2: An analog signal is to be converted into a PCM signal that is a binary polar NRZ line code. The signal is transmitted over a channel that is absolutely bandlimited to B-8 kHz. Assume that the PCM quantizer has 32 steps and that the overall equivalent system transfer function He is of the raised cosine-rolloff type with r 0.5. Find the maximum symbol rate D that can be supported over this channel without causing ISI a) c) Find...
Quantization. A continuous time signal is to be sampled at a sampling rate 8kHz. It is a voltage signal that varies between 10 and -10 V. We would like the quantization noise variance to be no more than 0.09. a) Design an efficient uniform quantizer that satisfies the quantization noise variance condition. For this tell me the step size, whether it is a mid-tread or mid-riser quantizer. Tell me how many levels your quantizer has. (6 marks) b) The quantized...
4) Five audio channels each with a bandwidth of 20 kHz, are sampled at a 10% higher than the Nyquist rate and quantized using a 16 bit quantizer. These five channels are then time multiplexed. a. Find the overall bit rate of the output of multiplexer (4 Marks) and b. Find the minimum bandwidth required to transmit the output of the multiplexer when using 16-QAM with a raised cosine filter with a rolloff factor of 0.25 (2 Marks)
4) Five...
Answer all parts and show all steps please.
3323 Modern Digital and Analog Communication Question A compact disc (CD) records audio signals digitally by using PCM. Assume that the audio signal bandwidth equals 15 kHz (a) If signal is sampled at the Nyquist rate and the samples are uniformly digitized into L 65,536 levels and then binary-coded, determine the number of bits required to encode a sample (b) If the audio signal has average power of 0.1 W and a...
5.2-1 A compact dise (CD) records audio signals digitlly by using PCM. Let the au bandwidth be 15 kHz. (a) If the Nyquist samples are uniformly quantized into L 65,5 (b) If the audio signal has average power of 0.1 W and peak voltage of 1 V, find the resulting (c) Determine the number of binary digits per second (bit/s) required to encode the audico (d) For practical reasons discussed in the text, signals are sampled at a rate well...
4) a. A signal g(t) = 20 cos 50nt.cos 220nt is sampled by a pulse train of frequency 250Hz. i. Calculate the Nyquist rate for the signal g(t). (4 Marks) ii. Sketch the spectrum of the resulting sampled signal. (5 Marks) iii. Specify the minimum cutoff frequency of the ideal reconstruction filter so as to recover g(t) from its sampled signal. (3 Mark) b. A signal in the frequency range 350 to 3500Hz is limited to peak to peak swing...
(5) A PCM system encodes samples using an 8-bit ADC. In the case of peak signal amplitude, estimate the signal to quantization noise ratio in dB (6) The output SQNR of a 10-bit PCM was found to be insufficient at 30 dB. To achieve the desired SQNR of 42 dB, an increase to the number of quantization levels was needed. Determine the fractional increase in the transmission bandwidth required. (7) A signal x(t) band-limited to 3kHz is sampled at a...
4. There is an analog signal whose bandwidith is knowm as 25 kHz. The signal is sampled at a rate which is 15% higher than the Nyquist rate. The sampled data are unfomly quantized with the quantization error no larger than 0.1% of the peak magnitude of the spal. Given the avalable channel bandwidth being 100 kiz, answer the following questions why? a) The roloff factory-?3. bs the Ilary (NO2) mult-ampitude signaling necessary? b) IfM-ary (M>2) is necessary, determine the...
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