How to obtain output data sample given the input data samples and a transfer function in Z-domain?

Hi Everyone,

Let us suppose that I have an array that corresponds to my input data and I have a system represented by the transfer function . What would be the most straighforward way to obtain the output samples in Matlab?

[Hayden Garmon]

I would use Isim, it is a good tool for simulatuing an input x through a transfer function

[Johann Baader]

Hi Hayden. But then, how do you set the transfer function? I have seen examples in the Laplace (s) domain. How do I treat z in my case?

[Johann Baader]

Notice that I would like to have the samples.

Answer 1

[Paul]

G=tf(2,[1 1],-1,'Variable','z^-1')

G =
 
     2
  --------
  1 + z^-1
 
Sample time: unspecified
Discrete-time transfer function.

y = lsim(G,x);