Which of the following statement is not true about auto-correlation function?(a) it is non-unique description of goals(b) it is measure of both time variation and statistical dependence(c) it is an average function(d) it is defined only for periodic signalsI got this question in quiz.My question is from AM Receiver topic in division Receivers & Transducers of Analog Communications

Which of the following statement is not true about auto-correlation fu

1.	Which of the following statement is not true about auto-correlation function?(a) it is non-unique description of goals(b) it is measure of both time variation and statistical dependence(c) it is an average function(d) it is defined only for periodic signalsI got this question in quiz.My question is from AM Receiver topic in division Receivers & Transducers of Analog Communications
Answer» The CORRECT OPTION is (d) it is defined only for PERIODIC signals To explain: Auto-CORRELATION function is also known as serial-correlation. It is the correlation of a function with a delayed copy of itself. So it is a non-unique description of signals. It is used for PROCESSING signals belonging to a series of values.

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