Suppose we want to digitize a low-pass analog signal with a bandwidth of 20 KHz and...
Suppose we want to digitize a low-pass analog signal with a bandwidth of 20 KHz and then transmit the digitized signal through a 128 Kbps link. What would be the SNR (dB) as a result of quantization error?
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Suppose we want to digitize a low-pass analog signal with a
bandwidth of 20 KHz and...
A low-pass signal with a bandwidth of 250 KHz was sampled at the Nyquist rate using...
A low-pass signal with a bandwidth of 250 KHz was sampled at the Nyquist rate using 512 levels of quantization to generate a PCM signal. a) Calculate the bit rate of the digitized signal b) Calculate the quantization error as SNR(db) c) What is the bandwidth of the PCM signal if it was sent using NRZ line coding?
*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).
Figure 1: PDF of X(t) 4. Signal X(t) has a bandwidth of 10 kHz, and its amplitude at any time i...
Please show all your working and steps and formular used. Thank
you
Figure 1: PDF of X(t) 4. Signal X(t) has a bandwidth of 10 kHz, and its amplitude at any time is a random variable whose PDF is showing in Figure 1. We want to transmit this signal using a uniform PCM system (a) Show that a (b) Determine the power in X(t) (c) What is the SQNR is decibels if a PCM system with 128 level is employed....
The following periodic signal is input to an ideal low pass filter of bandwidth 25 KHz. 1. x(t) 2...
The following periodic signal is input to an ideal low pass filter of bandwidth 25 KHz. 1. x(t) 2 a) Determine the average power of the signal x(t). b) If T 0.1 ms, give the output of the filter as a function of time, y(t) e) Determine the average power of the signal y(t) d) Determine the bandwidth of the signal y(), considered as a baseband signal. e) Now assume that the signal x() (with T-0.1 ms) is instead input...
In an effort to digitize an analog signal Y(t), we would like to select the right...
In an effort to digitize an analog signal Y(t), we would like to select the right sampling rate for the following signal: Y (t)= 4sin(251)t + 4sin (751) a) Select the right sampling rate for this signal. b) What will happen if the sampling rate from the above answer (a), is used to sample the following signal Y= 3sin(2507). c) Discuss if Aliasing is happening for answer (b) and if yes why? What will be the observing Aliasing Frequency?
A signal sampled at 10 kHz needs to be low-pass filtered to pass frequencies below 1...
A signal sampled at 10 kHz needs to be low-pass filtered to pass frequencies below 1 kHz and attenuate frequencies above 1.5 kHz with attenuation level of 0.01% (i.e., by a factor 0.000. Maximum passband ripple allowed is 0.1 dB. Use an FIR filter. Indicate if windowing is need and if so, choose an appropriate window. How many taps are needed? What are the values of the FIR filter at center tap and the ones next to the center tap...
KS31603 SULIT/CONFIDENTIAL QUESTION 4 (20 marks) (a) A message signal has a peak voltage of 1V...
KS31603 SULIT/CONFIDENTIAL QUESTION 4 (20 marks) (a) A message signal has a peak voltage of 1V and its average power is 125 mW. Design a PCM system (find minimum value of R of the R bit A/D) with uniform quantization to achieve at least a signal to quantization noise ratio of 36 dB. What is the signal to quantization noise ratio obtained in your design? [6 marks] (b) If the signal is sampled at 9kHz in 4(a), what is the...
Using the windowing functions discussed in class, design a low-pass FIR filter with a cutoff freq...
Using the windowing functions discussed in class, design a
low-pass FIR filter with a cutoff frequency of 2 kHz, a minimum
stop band attenuation of 40 dB, and a transition width of 200Hz.
The sampling frequency is 10kHz.
1. Using the windowing functions discussed in class, design a low-pass FIR filter with a cutoff frequency of 2 kHz, a minimum stop band attenuation of 40 dB, and a transition width of 200 Hz. The sampling frequency is 10 kHz 2....
Question 1 The noise floor, also known as additive white Gaussian noise (AWGN), is a continuous...
Question 1 The noise floor, also known as additive white Gaussian noise (AWGN), is a continuous noise level that appears over a wide spectrum when viewed in the frequency domain. True False 10 points Question 2 When considering the impact of impulse noise, we find that it is more devastating to a digital communications link, than an analog one. Therefore, error control methods should be used on all digital links. True False 10 points Question 3 When two transmitters operate...
The representation of a p(t) signal in the frequency spectrum that we want to exemplify is...
The representation of a p(t) signal in the frequency spectrum that we want to exemplify is P(f) and is shown as follows. ei P(f) = (N) S1 f 1 - 530 515KHz S/ f 15 545KHz 10 otherwise We want to record this signal by passing it through an analog to digital converter (ADC) with sampling rate of 100 KHz. Will there be an overlap? Why is that? If there is an overlap, what should be the minimum sampling 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).
Please show all your working and steps and formular used. Thank
you
Figure 1: PDF of X(t) 4. Signal X(t) has a bandwidth of 10 kHz, and its amplitude at any time is a random variable whose PDF is showing in Figure 1. We want to transmit this signal using a uniform PCM system (a) Show that a (b) Determine the power in X(t) (c) What is the SQNR is decibels if a PCM system with 128 level is employed....
The following periodic signal is input to an ideal low pass filter of bandwidth 25 KHz. 1. x(t) 2 a) Determine the average power of the signal x(t). b) If T 0.1 ms, give the output of the filter as a function of time, y(t) e) Determine the average power of the signal y(t) d) Determine the bandwidth of the signal y(), considered as a baseband signal. e) Now assume that the signal x() (with T-0.1 ms) is instead input...
In an effort to digitize an analog signal Y(t), we would like to select the right sampling rate for the following signal: Y (t)= 4sin(251)t + 4sin (751) a) Select the right sampling rate for this signal. b) What will happen if the sampling rate from the above answer (a), is used to sample the following signal Y= 3sin(2507). c) Discuss if Aliasing is happening for answer (b) and if yes why? What will be the observing Aliasing Frequency?
KS31603 SULIT/CONFIDENTIAL QUESTION 4 (20 marks) (a) A message signal has a peak voltage of 1V and its average power is 125 mW. Design a PCM system (find minimum value of R of the R bit A/D) with uniform quantization to achieve at least a signal to quantization noise ratio of 36 dB. What is the signal to quantization noise ratio obtained in your design? [6 marks] (b) If the signal is sampled at 9kHz in 4(a), what is the...
Using the windowing functions discussed in class, design a
low-pass FIR filter with a cutoff frequency of 2 kHz, a minimum
stop band attenuation of 40 dB, and a transition width of 200Hz.
The sampling frequency is 10kHz.
1. Using the windowing functions discussed in class, design a low-pass FIR filter with a cutoff frequency of 2 kHz, a minimum stop band attenuation of 40 dB, and a transition width of 200 Hz. The sampling frequency is 10 kHz 2....
The representation of a p(t) signal in the frequency spectrum that we want to exemplify is P(f) and is shown as follows. ei P(f) = (N) S1 f 1 - 530 515KHz S/ f 15 545KHz 10 otherwise We want to record this signal by passing it through an analog to digital converter (ADC) with sampling rate of 100 KHz. Will there be an overlap? Why is that? If there is an overlap, what should be the minimum sampling rate...
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