For the discrete-time process Xn in Problem 11.2.2, calculate an approximation to the power spectral density by finding the DFT of the truncated autocorrelation function
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Compare your DFT output against the DTFT SX (φ).
Problem 11.2.2
X(t) is a wide sense stationary process with autocorrelation function
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The process X(t) is sampled at rate 1/Ts = 4,000 Hz, yielding the discrete-time process Xn. What is the autocorrelation function RX [k] of Xn?