EC 4th Sem Digital Communication Important Questions DTE

1. Define information capacity and state Shannon's theorem?
2. List merits,demerits and applications of bipolar  signaling.
3. Write br if note on companies processor.
4. What is digital modulation?Name the types of digital modulation techniques.
5. What is multiple access method. Name types.
6. Write a note on block code?
7. List the application of optic fibre?
8. Compare analogue and digital communication system. 
9. Define quantization and quantization noise.
10.  mention the merits and demerits of of dpsk.
11.  What is multiplexing what are the advantages and disadvantages of multiplexing.
12. describe briefly about an error and name the types. What do you mean by transmission media and name the types. 
13. Explain transmitter and receiver of adaptive Delta modulation. 
14. Explain minimum shift keying transmitter. 
15. Write a brief note on block codes question mark. 
16. What is transmission media and name the types of transmission media with examples. 
17. Write a brief note on coaxial cable. 
18. Mention the advantages and disadvantages of pwm. 
19. Describe the generation of PPM. 
20. Describe briefly the adaptive Delta modulation transmitter with the help of functional block diagram.
21.  Illustrate the the nrz unipolar signalling format with an example.
22.  Describe briefly BFSK transmitter. 
23. Mention the application of QPSK question mark. 
24. Compare the the QPSK and bf ke digital modulation techniques.