This brief studies invertibility and inverses of linear time-varying digital filters in the form of ARMA equation with time-varying dynamic order and relative degree. It presents a necessary and sufficient condition for the d-shift invertibility of linear time-varying filters and computational procedure for obtaining the d-shift left and right inverses. A necessary and sufficient condition for stability of inverse filters is given.
No takes yet. Share an insight, caveat, or question.
Wang et al. (2000) studied this question.
Synapse has enriched 5 related papers. Consider them for comparative context: