Plot step response of discrete signal

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Luke Brown
Luke Brown on 22 Sep 2021
Edited: Shayan Sepahvand on 22 Sep 2021
Is there a way to plot the step response of y[n] = y[n-2]+x[n-1]?

Answers (1)

Shayan Sepahvand
Shayan Sepahvand on 22 Sep 2021
Edited: Shayan Sepahvand on 22 Sep 2021
Dear Luke,
If you take the z-transform of both sides, you will get:
then define a vector using ones(.) and set it as X. For example,
X = ones(100,1);
then use this code
Y = filter([0, 1], [1, 0, -1], X);
Finally it seems a good idea to plot Y with;
stem(Y)

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