Interconnection of state space structures and wave digital filters

State space structures (SSSs) and wave digital filters (WDFs) are two major paradigms for the realization of digital filters. Both approaches are well established, but there are no proven methods for a mixed design of digital filters consisting of parts which are realized as SSSs and parts realized...

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Bibliographic Details
Published in:IEEE transactions on circuits and systems. 2, Analog and digital signal processing Analog and digital signal processing, 2005-02, Vol.52 (2), p.90-93
Main Authors: Petrausch, S., Rabenstein, R.
Format: Article
Language:English
Subjects:
Added delay
Adders
Circuits
Construction
Design engineering
Design methodology
Digital filters
Equations
Finite wordlength effects
Interconnection
Nonlinear filters
Ports
Propagation delay
Robust stability
Space environment
Spacecraft
State space structures (SSSs)
State-space methods
wave digital filters (WDFs)
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Summary:State space structures (SSSs) and wave digital filters (WDFs) are two major paradigms for the realization of digital filters. Both approaches are well established, but there are no proven methods for a mixed design of digital filters consisting of parts which are realized as SSSs and parts realized as WDFs. This contribution shows how to add a wave port to the conventional SS representation. This wave port allows to interconnect SSSs and WDFs without creating delay-free loops. Such interconnections allow to build discrete-time structures by reusing existing designs from both classes of digital filters.
ISSN:1549-7747
1057-7130
1558-3791
DOI:10.1109/TCSII.2004.840286