LTI Discrete-Time Systems in the Transform domain An lti discrete-time system is completely characterized in the time-domain by its impulse response thin We consider now the use of the dtft and the z-transform in developing the transform- domain representations of an lti system Copyright C 2001, S K. MitraCopyright © 2001, S. K. Mitra 1 LTI Discrete-Time Systems in the Transform Domain • An LTI discrete-time system is completely characterized in the time-domain by its impulse response {h[n]} • We consider now the use of the DTFT and the z-transform in developing the transform￾domain representations of an LTI system