matlab code for autocorrelation function

afifar · Dec 7, 2012

i wanna ask about matlab code for autocorrelation function.

if an input is wide-sense stasioner with autocorrelation function is R_XX(t)=10e^(-2|t|).

what is matlab code for that function ?

kingslayer · Dec 8, 2012

If you are asking the code to compute that Rxx(t) function it is very easy to do that in Matlab:

Code:

% Define range of t in the interval [-1;1] with steps of 0.01
t = [-1:.01:1];
% Compute the function with input vector t (with absolute values)
R = 10 * exp(-2 * abs(t));

afifar · Dec 11, 2012

kingslayer said:
If you are asking the code to compute that Rxx(t) function it is very easy to do that in Matlab:

Code:

% Define range of t in the interval [-1;1] with steps of 0.01 t = [-1:.01:1]; % Compute the function with input vector t (with absolute values) R = 10 * exp(-2 * abs(t));

Is that all ? how can i decide the mean of output ?

kingslayer · Dec 12, 2012

Yes, that's all! This is Matlab ;-)

To get the average of a vector (in this case R), just use the following built-in function

Code:

avg = mean(R);

matlab code for autocorrelation function

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matlab code for autocorrelation function

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