4. Which of the following is not true regarding auto-correlation function?
(a)It is an average function (b)It is defined only for periodic signals (c)It is measure of both time variation and statistical dependence (d)It is non-unique description of signals
Answer
Answer : (b)
Explanation
Explanation : No answer description available for this question. Let us discuss.
Analog Communications » Exercise - 16. The auto-correlation function is - (a) An odd function in t0 (b) An even function in t0 (c) An exponential function in t0 (d) None of the above
Analog Communications » Exercise - 18. The auto-correlation function of white noise is a - (a) Step function (b) Impulse function (c) Gaussian function (d) Constant
Analog Communications » Exercise - 17. The auto-correlation function of a signal (t) at to = 0 is equal to - (a) Zero (b) Infinite (c) Average voltage of the signal (d) Average power of the signal
Analog Communications » Exercise - 15. For a periodic function, the spectral density and auto-correlation functions are - (a) Fourier transform pair (b) Laplace transform pair (c) one and the same thing (d) None of the above