Asymptotic stability of fixed-point state-space digital filters with combinations of quantization and overflow nonlinearities

A novel criterion for the global asymptotic stability of fixed-point state-space digital filters under various combinations of quantization and overflow nonlinearities is presented. The criterion is compared with a previously reported criterion.

► Asymptotic stability criterion for fixed-point state-space digital filters is proposed.
► The criterion turns out to be an improvement over previously reported criteria.
► An example is provided to illustrate the applicability of the approach.