Alternative to nested Memory blocks for keep track of previous N samples

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Davide Fabbroni
Davide Fabbroni 2016-10-13
编辑： Davide Fabbroni 2016-10-13
Hi everyone!
I need to calculate the ONLINE windowed median of a signal in Simulink. Let's say that I want to perform the median in a window of 50 samples. 50 nested Memory block is not a good idea :)
To be more specific, right now, I have a MATLAB Function that calculates something like
x(k) = f(u(k))
I want to extend this operation by keeping track of the x and use the last N samples recursively to calculate a windowed median. Something like
x_m(k) = f(x(k), x(k-1), ... , x(k-N))
I don't have any Statistic Toolbox that contain some blocks that do what I want, so any other suggestion?

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