Causality Condition of a Discrete- Time LTI System et xi[n] and xln be two input sequences 21」forn O The corresponding output samples atn=no of an lti system with an impulse response hnd are then given by Copyright C 2001, S.K. MitraCopyright © 2001, S. K. Mitra 6 Causality Condition of a Discrete-Time LTI System • Let and be two input sequences with • The corresponding output samples at of an LTI system with an impulse response {h[n]} are then given by x [n] 1 x [n] 2 x [n] x [n] 1 = 2 n  no for n = no