On assessing robustness of recursive digital filters

1 March 1990

journal article
research article
Published by Wiley in European Transactions on Telecommunications

Vol. 1 (2) , 103-109
https://doi.org/10.1002/ett.4460010205

Abstract

In a recursive digital filter the need for applying rounding/truncation and overflow corrections to the signal (data) at appropriate locations causes the filter behaviour to differ in a more or less noticeable way from the desired one. The filter is said to be the more robust the less such differences are pronounced. For assessing robustness, a list of specific effects are proposed which can individually be tested. If the filter behaves properly with respect to all these tests it can be expected to behave properly also in any of the situations it will encounter during its operation. The possibility of guaranteeing robustness is discussed.

Keywords

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