If you want to implement a discrete-time state-space model in Simulink, you can use the 'Discrete State-Space' block. The following documentation page provides additional information on how to use this block:
Also, you could use the 'Kalman Filter' block in Simulink to estimate the states of the system; one thing to note is that the block is slightly different than the 'kalman' function. This documentation page provides some helpful information on the differences between the block and the function:
