3 (a) A PCM system uses an uniform quantizer followed by a 7-bit binary encoder. The bi rate of the system is equal to 50 Mbps. Find the message signal bandwidth for which the system operates satisfactorily. (b) Justify the need for non-uniform quantization, mentioning any typical application. Also draw the system block diagram.

3 (a) A PCM system uses an uniform quantizer followed by a 7-bit binary encoder. The bi rate of the system is equal to 50 Mbps. Find the message signal bandwidth for which the system operates satisfactorily. (b) Justify the need for non-uniform quantization, mentioning any typical application. Also draw the system block diagram.

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

ChapterS: Safety, Basic Electricity And Ohm's Law

Section: Chapter Questions

Problem 8RQ: What is an MSDS?

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Discussion: 1. What are the advantages of PCM system over other types of modulation systems? 2. What are the types of representing binary numbers? 3. The central operation in the generating PCM is the Digital to Analog (A/D) converter. Describe briefly the several techniques that are used in success system. 4. What is meant by the Quantization Partition and Quantization Codebook? 5. Discuss the obtained results.
Q2/ The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of ±0.1% (full scale). The analog voltage waveform has a bandwidth of 100 Hz and an amplitude range of -10 to +10 volts. Find the minimum sampling rate required. i) ii) Find minimum bit rate required in the PCM signal. Find the number of bits in each PCM word. iii) iv) Find the minimum absolute channel bandwidth required for the transmission of the PCM signal.
The information in an analog waveform, whose maximum frequency fm-D4000HZ, is to be transmitted using a 16-level PAM system. The quantization must not exceed +1% of the peak-to peak analog signal. (a) What is the minimum number of bits per sample or bits per PCM word that should be used in this system? (b) What is the minimum required sampling rate, and what is the resulting bit rate? (c) What is the 16-ary PAM symbol Transmission rate?
Problem 2: The information in an analog signal voltage waveform is to be transmitted over a PCM system with an accuracy of ± 0.1 % of the peak-to-peak analog signal. The analog voltage waveform has a bandwidth of 100 Hz and an amplitude range of – 10 to + 10 Volts. Determine the minimum sampling rate required. b. Determine the number of bits in each PCM word. c. Determine the minimum bit rate required in the PCM system. d. Determine the minimum absolute channel bandwidth required for the transmission of the PCM signal.
Exercise 1 e) Design a circuit that will detect the three-bit binary code at its input. The output must be logic HIGH to indicate the corresponding binary code. (Hint: decoder circuit). f) Design a circuit that will detect the three-bit binary code at its input. The output must be logic LOW to indicate the corresponding binary code. (Hint: decoder circuit).
1. What are the advantages of PCM system over other types of modulation systems? 2. What are the types of representing binary numbers? 3. The central operation in the generating PCM is the Digital to Analog (A/D) converter. Describe briefly the several techniques that are used in success system. 4. What is meant by the Quantization Partition and Quantization Codebook? 5. Discuss the obtained results.
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16. The ________ demodulator reverses the process of modulation, thereby recovering the original binary data signal.A. QAMB. ISMC. FSKD. BER
Consider the baseband signaling of the textual message 'OK' (excluding the quotes) in a wired DCS using binary line codes. Assume to bit duration is 1 ms. (a) Covert the message "OK" into a bit stream based on the 6-bit ASCII standard. (b) Describe mathematically and plot the non-return to zero code. evel (NRZ-L) line Stu (c) Describe mathematically and plot the bi-o-L (Manchester) line code. (d) escribe mathematically and plot the bipolar level line code.
4. This problem addresses the digitization of a television signal using pulse-code modulation. The signal bandwidth is 4.5 MHz. Specifications of the modulator include the following: Sampling: 15% in excess of the Nyquist rate Quantization: uniform with 1024 levels Encoding: binary Determine (a) the Nyquist rate, and (b) the minimum permissible bit rate.
Q4/ A PCM system uses a uniform quantizer followed by a 7-bits binary encoder. The bit rate of the system is equal to 50 ×10°bitss/sec. i) What is the maximum message signal bandwidth for which the system operates satisfactorily? ii) Calculate the output signal to quantization noise ratio when a full load sinusoidal modulating wave of frequency 1 MHz is applied to the input.
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