Digital Communication Basic Test – 3

1. What is Wiener-Khinchin theorem?

2. Autocorrelation is a function which matches

3. Autocorrelation is maximum at _______

4. Autocorrelation function of periodic signal is equal to _______

5. Autocorrelation is a _______ function.

6. Power spectral density function is a?

7. Autocorrelation is a function of

8. Power spectrum describes distribution of _________ under frequency domain.

9. Spectogram is the graph plotted against?

10. Energy spectral density defines

11. How can power spectral density of non periodic signal be calculated?

12. Autocorrelation function of white noise will have?

13. According to Parseval's theorem the energy spectral density curve is equal to?