GATE 2021 EC – Question 31
The autocorrelation function $R_X(\tau)$ of a wide-sense stationary random process $X(t)$ is shown in the figure.
The average power of $X(t)$ is ________.
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Show answer and explanation
Correct answer: 2
Explanation
The average power of a WSS process equals its autocorrelation at zero lag, $P=R_X(0)$. The triangle in the figure peaks at $2$ for $\tau=0$, so $P=2$.