Z{x[n]} = Σ x[n] z^{-n} maps discrete-time sequences to complex z-plane functions. Discrete analogue of Laplace transform. Region-of-convergence determines stability. Backbone of digital signal processing + control systems.
Z{x[n]} = Σ x[n] z^{-n} maps discrete-time sequences to complex z-plane functions. Discrete analogue of Laplace transform. Region-of-convergence determines stability. Backbone of digital signal processing + control systems.