We consider the construction of dual filters with a prescribed approximation order, that is with the ability to reproduce polynomials up to a certain degree. Specifically, we illustrate how to construct nonnegative duals when starting from a nonnegative primal filter. This construction produces filters with rational symbol, which can then be either implemented efficiently as recursive IIR filter or approximated by a Laurent polynomial.
Titolo: | Dual non-negative rational symbols with arbitrary approximation order |
Autori: | |
Data di pubblicazione: | 2004 |
Rivista: | |
Handle: | http://hdl.handle.net/20.500.12318/2517 |
Appare nelle tipologie: | 1.1 Articolo in rivista |
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