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Design of Digital Filters with Amplitude and Group Delay Specifications
Ansvarig organisation
2001 (Engelska)Konferensbidrag, Publicerat paper (Refereegranskat) Published
Abstract [en]

This paper considers the design of a digital filter with prescribed magnitude and group delay specifications. First, we outline the derivation of the phase and group delay functions of an Nth order digital Laguerre filter and show that the group delay function of the filter can be written as a ratio of quadratic functions in the filter coefficients. Then, we formulate our filter design problem as a constrained L2 space minimization problem in which the performance requirement on the group delay and magnitude in the passband are treated as constraints while minimizing the L2 norm of the error function between the designed and the desired filters. Methods for solving the proposed nonlinear optimization problem axe outlined. Numerical results are presented to illustrate the usefulness of the proposed method. As a special case, corresponding results for general FIR filters axe also derived

Ort, förlag, år, upplaga, sidor
Singapore: IEEE , 2001.
Nyckelord [en]
delay filters, digital filters, filtering theory, FIR filters, minimisation, optimisation, digital filter design, magnitude specifications, group delay specifications, amplitude specifications, phase functions, Nth order digital Laguerre filter, quadratic functions, filter coefficients, passband, constrained L2 space minimization problem, nonlinear optimization problem, FIR filters, numerical results
Nationell ämneskategori
Signalbehandling
Identifikatorer
URN: urn:nbn:se:bth-10127Lokalt ID: oai:bth.se:forskinfo3B43CFB5259AF458C1256C6E003EAC8DISBN: 0-7803-7011-2 (tryckt)OAI: oai:DiVA.org:bth-10127DiVA, id: diva2:838167
Konferens
11th IEEE Signal Processing Workshop on Statistical Signal Processing
Tillgänglig från: 2012-09-18 Skapad: 2002-11-11 Senast uppdaterad: 2015-06-30Bibliografiskt granskad

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