October 2018
Intermediate to advanced
555 pages
17h 33m
English
Content preview from Principles of Synchronous Digital Hierarchy
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66 Principles of Synchronous Digital Hierarchy
5. What is a sample in the context of digital technology? Explain sam-
pling process with a sketch.
6. Explain the sampling theorem. What is the signicance of 8-kHz
sampling rate?
7. How is PWM different from TDM?
8. Compare various features of PAM, PWM, and PPM systems.
9. Describe the stages involved in PCM. Why is this system called
digital?
10. What is quantization? Work out bit values for the sequence 11101110.
11. How many quantization levels are enough for speech signal and
why? Explain the quantization process with a sketch.
12. Describe the essential components of a PCM communication link.
What are the major constraints?
13. What is quantization noise ...
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