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5. A signal contains the following frequencies, 100 Hz, 247 Hz, and 750 Hz. What is...
02. a) What is Nyquist's theorem? b) An ECG signal contains c 2. What is the minimum frequency at which the sig alog converter (ADC) has a step size of 0.0075V and a fu timum quantization erro...
02. a) What is Nyquist's theorem? b) An ECG signal contains c 2. What is the minimum frequency at which the sig alog converter (ADC) has a step size of 0.0075V and a fu timum quantization error for this ADC if the ECG signal ranges signal is samples at 80 samples/second. What frequency will be "alia to 100 Hz, although no contains components with frequencies up ained at frequencies above 40 Hz. the min (1 Mark) C) A certain digital-to-analog...
consider a PCM encoder that accepts a signal with full scale voltage of 25V. The maximum...
consider a PCM encoder that accepts a signal with full scale voltage of 25V. The maximum actual quantized voltage is 24.99923706 for uniform quantization. Do not round the numbers. Go up to 9 decimal places. a. Calculate the number of bits used for quantization b. Calculate the number of quantized levels c. Calculate the normalized step size d. Calculate the actual step size e. Calculate the maximum normalized quantized voltage f. Calculate the normalized resolution g. If this encoder operates...
(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...
Q2) A unipolar 14 bit ADC measures 0 – 8 volts full scale. a. What is...
Q2) A unipolar 14 bit ADC measures 0 – 8 volts full scale. a. What is the minimum resolvable voltage (or voltage resolution)? [Hint: resolution decrease as you increase the volts full scale] b. What is the percent quantization error? [Hint: percent quantization error for unipolar 10 bit ADC, 1 V full scale is: (resolution/max voltage) x100% or (975μV/1V) x100% = 0.0975%] c. What is the percent quantization error if a 1 volt max signal is input? [Hint: same resolution...
3. With the aid of a diagram, briefly explain th ing principle of a Successive a) Approximation Analog-to-Digital Conve...
3. With the aid of a diagram, briefly explain th ing principle of a Successive a) Approximation Analog-to-Digital Converter (ADC) b) An ADC has to be designed to convert voltages in the range from -5 V to +5 V, with a resolution below (better than) 1 mV. What is the minimum number of bits required to meet this design specification? An ADC has to be designed to convert input voltage signals with frequency c) components less than or equal o...
Signal Sampling Problem Hi! Good morning, can someone help me to solve this following sampling excercise?...
Signal Sampling Problem Hi! Good morning, can someone help me to solve this following sampling excercise? A digital communication link carries binary-coded words representing samples of an input signal Xa (t) = 3 cos 600πT + 2 cos 1800 πT The link is operated at 10000 bits/s and each input sample is quantized into 1024 different voltage levels. What is the sampling frequency and the folding frequency? What is the Nyquist rate for the signal Xa (t)? What are the...
Signal Sampling Problem Hi! Good morning, can someone help me to solve this following sampling excercise?...
Signal Sampling Problem Hi! Good morning, can someone help me to solve this following sampling excercise? A digital communication link carries binary-coded words representing samples of an input signal Xa (t) = 3 cos 600πT + 2 cos 1800 πT The link is operated at 10000 bits/s and each input sample is quantized into 1024 different voltage levels. What is the sampling frequency and the folding frequency? What is the Nyquist rate for the signal Xa (t)? What are the...
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...
sa Date: Apr. 10, 2019 An 8-bit ADC has an input analog range of +5 volts....
sa Date: Apr. 10, 2019 An 8-bit ADC has an input analog range of +5 volts. The analog input signal is t)4 cos (7000Tt). The converter samples the input signal at 8 ksam/s and supplies data to computer 64 kbits/s. The computer re- construct the transmitted signal, x,(C), by using an ideal DAC on the received signal. Determine: (a) The quantizer resolution (or step) (b) Mean squared quantization error (noise) power (c) The folding frequency (d) The reconstructed signal x,...
A periodic composite signal contains frequencies from 100 to 400 KHz with a step of 20...
A periodic composite signal contains frequencies from 100 to 400 KHz with a step of 20 KHz. The peak amplitude is 100 V for the lowest and the highest signals and is 200 V for the 200-KHz signal. Assuming that the amplitudes change gradually from the minimum to the maximum, draw the frequency spectrum.
02. a) What is Nyquist's theorem? b) An ECG signal contains c 2. What is the minimum frequency at which the sig alog converter (ADC) has a step size of 0.0075V and a fu timum quantization error for this ADC if the ECG signal ranges signal is samples at 80 samples/second. What frequency will be "alia to 100 Hz, although no contains components with frequencies up ained at frequencies above 40 Hz. the min (1 Mark) C) A certain digital-to-analog...
(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...
3. With the aid of a diagram, briefly explain th ing principle of a Successive a) Approximation Analog-to-Digital Converter (ADC) b) An ADC has to be designed to convert voltages in the range from -5 V to +5 V, with a resolution below (better than) 1 mV. What is the minimum number of bits required to meet this design specification? An ADC has to be designed to convert input voltage signals with frequency c) components less than or equal o...
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...
sa Date: Apr. 10, 2019 An 8-bit ADC has an input analog range of +5 volts. The analog input signal is t)4 cos (7000Tt). The converter samples the input signal at 8 ksam/s and supplies data to computer 64 kbits/s. The computer re- construct the transmitted signal, x,(C), by using an ideal DAC on the received signal. Determine: (a) The quantizer resolution (or step) (b) Mean squared quantization error (noise) power (c) The folding frequency (d) The reconstructed signal x,...
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