IIR digital filtering of non-uniformly sampled signals via state representation

Laurent Fesquet (1) , Brigitte Bidégaray-Fesquet (2)

1 TIMA - Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés
2 EDP - Equations aux Dérivées Partielles

This article describes a new kind of processing chain based on a non-uniform sampling scheme provided by a level-crossing ADC. The chain implements IIR filters which process directly the non-uniform samples without resampling in a regular scheme. The non-uniformity in the sample times leads to choose a state representation for the filters. The stability is studied and the performances of various numerical schemes used to implement the filters in this representation are compared.

Mots clés: IIR-elliptic-filter; non-uniformly sampled signal processing

Domaines: Micro et nanotechnologies/Microélectronique; Analyse numérique [math.NA]; Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Laurent Fesquet, Brigitte Bidégaray-Fesquet. IIR digital filtering of non-uniformly sampled signals via state representation. Signal Processing, 2010, 90 (10), pp.2811-2821. ⟨10.1016/j.sigpro.2010.03.030⟩. ⟨hal-00493354⟩