Diploma in ECE Study Material | ADVANCED COMMUNICATION SYSTEMS UNIT 2 | Yuvasallinfo

34051 ADVANCED COMMUNICATION SYSTEMS

Unit-2 Syllabus

UNIT-II DIGITAL COMMUNICATION

Basic Elements Of Digital Communication System – Block Diagram-Characteristics Of Data Transmission Circuits – Bandwidth Requirement – Speed – Baud Rate – Noise – Crosstalk – Distortion.

DIGITAL CODES:

ASCII Code – EBCDIC Code – Error Detection Codes – Parity Check Codes – Redundant Codes – Error Correction Codes – Retransmission- Forward Error Correcting Code – Hamming Code – Digital Modulation Techniques – ASK, FSK, PSK, QPSK Modulation/Demodulation Techniques (Only Block Diagram And Operation).

 Important 2 Mark and 3 Mark Questions

1. What is a Digital Signal ?
2. What is an ADC ?
3. What is Noise ?
4. What is a Channel ?
5. Define Even Parity
6. What is an ASCII Code ?
7. What is OOK ?
8. Draw PSK waveform
9. What is Cross Talk ?
10. What an ARQ
11. Compare Analog and Digital Signals
12. Mention the characteristics of Digital Signal Transmission
13. Mention the Blocks in a Digital Communication System
14. Mention the uses of Equalizers
15. Explain Nyquist Rate
16. Explain Baud Rate
17. Explain about Baudot Code
18. Explain FSK
19. How can we improve the speed of a Transmission Line
20. What is the use of Twisted pair of wires ?

Important 10 Mark Questions

1. Explain Basic elements of digital communication system?
2. Explain Characteristics of digital transmission circuits?
3. Explain the Source Codes
4. Explain Error Detection Codes
5. Explain Error Detection Codes
6. Explain about Equalizers and Mention its Types
7. Explain FSK modulator, demodulator? 
8. Explain PSK modulator, demodulator? 
9. Explain QPSK modulator, demodulator?

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