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A Unifying Framework for Finite Wordlength Realizations.

By Thibault Hilaire, Philippe Chevrel and James F. Whidborne


A general framework for the analysis of the finite wordlength (FWL) effects of linear time-invariant digital filter implementations is proposed. By means of a special implicit system description, all realization forms can be described. An algebraic characterization of the equivalent classes is provided, which enables a search for realizations that minimize the FWL effects to be made. Two suitable FWL coefficient sensitivity measures are proposed for use within the framework, these being a transfer function sensitivity measure and a pole sensitivity measure. An illustrative example is presented

Publisher: IEEE
Year: 2007
DOI identifier: 10.1109/TCSI.2007.902408
OAI identifier:
Provided by: Cranfield CERES

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