In MATLAB, u(n) is a function that generates a unit step signal. This signal has a value of 0 for all negative values of n, and a value of 1 for all positive values of n.
To write u(n) in MATLAB, you can use the heaviside function. This function takes in a value of n and returns 0 if n is negative, and 1 if n is positive.
In MATLAB, autocorrelation is a measure of the similarity between a signal and a time-delayed version of itself. It is commonly used in signal processing and time series analysis to identify patterns and relationships in data.
To calculate autocorrelation in MATLAB, you can use the xcorr function. This function takes in two signals and returns the cross-correlation between them. For autocorrelation, you can input the same signal twice.
To plot the autocorrelation function in MATLAB, you can use the xcorr function in combination with the plot function. The xcorr function will return the autocorrelation values, and the plot function can be used to create a graph of these values.