2. Fig shown below shows a PCM wave in which the amplitude levels of +1 volt and -1volts are used to represent binary symbols 1 and 0 respectively. The code word usedconsists of three bits. Find the sampled version of an analog signal from which thisPCM wave is derived before and after the smoothing LPF.+10-10 0 10 10TཁྱTb..........t

Step 1: Decode the PCM WaveThe PCM waveform provided represents a digital sequence where each sample…

Answered: 2. Fig shown below shows a PCM wave in…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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a. Puise of the used in the process of converting analog signal to digital signal 3- step method (sampling, quantizing, and coding). Assuming we have a sinusoidal signal with values ranging from -2V to +2V. i. Calculate the number of bits required to represent a sample of the signal if the resulting quantization signal is to have a maximum step size, NV of 0.125V. ii. Calculate the Signal-to-Noise Ratio, SNRq due to the quantization process.
1)to VRMs value to generate a signal with a peak voltage of 10 V with a signal generator in a multisim program..................... must be entered. 2)) the frequency of the signal generator to produce a signal with a period of 10ms...................... must be entered as. What should come to the dotted line?
Given the figure below, discuss how the circuit recovers the original information from the input AM signal. Original information or modulating signal AM signal R,
dv. An SCR has specified value of dt as 157 V/us. If a sinusoidal noise signal of frequency 500 kHz appears. The maximum allowed peak value of noise signal for not triggering the SCR, is (a) 50 V (b) 25 V (c) 100 V (d) 150 V
5. A signal is expected to have a frequency of fm 1000 Hz. (a) (b) (c) signal? What minimum sampling frequency is required in order to accurately measure this What frequencies would be experimentally observed if the signal were sampled at 1500 Hz? Show the folding diagram and label it up to 4500 Hz. At what frequency would the signal, fm 1000 Hz, be observed as if sampling at 1500 Hz? Also list and show on the folding diagram, the lowest four frequencies that would be aliased and also observed at the same alias frequency as the expected signal.
Solve the 2nd question i.e. the value of the output signal is equal to.......
What will be the output SNR for a PCM system with 16 levels in the quantizer. Assume full scale sinusoidal signal amplitude is presented.
This question from Digital Communication 1 Course.
4. Signal conditioning element basically takes the output of the sensing element and converts it into a form more suitable for further processing, usually in the form of a DC voltage, DC current or variable frequency AC voltage. The output of the sensing element is usually too small to operate an indicator or a recorder. Therefore, it is suitably processed and modified in the signal conditioning element so as to obtain the output in the desired form that is amplify the signal and filtering the unwanted signal. i. Describe the aliasing phenomenon. ii. Suggest a solution to minimize the effect of aliasing.
(Aliasing) An analog-to-digital converter samples a 20 Hz voltage signal at 100 samples/s. a. What is the frequency of the sampled signal? Is it aliased? b. Now suppose a second, 60 Hz signal, caused by line noise, is added to the original signal. To what frequency is this this line noise aliased? c. If the sampling rate is lowered to 50 samples/s, what frequencies are now present in the sampled signal? Power Supply -width
Consider a uniform quantisation scheme where a 8-bit analogue to digital converter (ADC) is used to represent a signal that has 2 V peak to peak voltage. (a) How many quantisation levels can be obtained? (b) Show that the maximum signal to quantisation noise ratio of the uniform scheme is given by 1.76 +6.02R for an R-bit ADC (c) Thus find the maximum quantisation error of the 8-bit ADC (d) What is the smallest ADC (in terms of number of bits) required obtain a signal to quantisation noise ratio limit of 40 dB
For the circuit of Figure 2. Carry out the analysis in DC and small signal with wwwwwww wwwww www wwwwwwwwwwwwwww Vt=0.7 V, Kn(W/L) = 4 mA/V. Ignore the Early effect. Determine: (a) The current in DC ID. www.www (b) The gains vo/v₁, io/ii (c) The input resistance Rin and output resistance Rout. wwwwwwwwwww 1/ 0.6 k w o Ca ΙΜΩ www.11 12 V 0.51 k Figura 2: wwwwwwwwwwwwwwww • 2.7 ΚΩ Ca +₁₁ U 4.7 k

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