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Analog vs Digital Communication FAQ

The document contains questions about analog communication techniques such as amplitude modulation, frequency modulation, pulse modulation as well as digital communication techniques such as pulse code modulation, data encoding, inter-symbol interference, modulation schemes, channel coding and spread spectrum.

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nabarunpvt
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60 views2 pages

Analog vs Digital Communication FAQ

The document contains questions about analog communication techniques such as amplitude modulation, frequency modulation, pulse modulation as well as digital communication techniques such as pulse code modulation, data encoding, inter-symbol interference, modulation schemes, channel coding and spread spectrum.

Uploaded by

nabarunpvt
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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Analog Communication

1. What are the benefits of Super-heterodyning?

2. What is the fundamental difference between FDM and TDM?

3. Why FM signal is not possible to broadcast for long distance like AM?

4. What is the fundamental difference between PWM and PPM?

5. Why PAM is analog modulation but PCM is digital modulation?

6. Why FM is less noisy than AM?

7. What you will observe if the value of modulation index of NBFM is very less?

8. What is the physical significance of modulation index?

9. Based on the modulation, how do you classify amplitude modulation and explain which one is
more effective and which one is the worst?

10. What is quadrature null effect?

11. What is effective bandwidth?

12. What is the impact of power on the efficiency of AM?

13. What is the typical value of bandwidth of FM and the broadcasting range of FM?

14. Based on the broadcasting, how do you classify AM and what is the typical value of the
bandwidth of AM?

15. What is trimmer and padder?

16. What is the impact of pre-emphasis and de-emphasis on FM system?


Digital Communication

1) What is Digital communication?

2) What is Dibit?

3) What is Pulse Code Modulation?

4) Define Nyquist rate?

5) What is difference in DPCM and DM?

6) What is Quantization in Digital communication?

7) Enlist different types of Quantization?

8) What is Delta Modulation?

9) List different types of Data Encoding?

10) What is Inter Symbol Interference?

11) What is Amplitude Shift Keying and Frequency Shift Keying?

12) What is M-ary Equation?

13) What is Pseudo-Noise Sequence?

14) What is matched filter?

15) Define : mean, moment and variance of a random variable X.

16) When Granular noise occurs?

17) What is correlative coding?

18) What are eye pattern?

19) What is baseband signal receiver?

20) What is hamming distance?

21) What is convolution code?

22) What is Golay codes?

23) What is jamming margin?

24) What is frequency hopping?

25) What is line code? List some properties of Line Coding?

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