- Title
- A direct optimization method for low group delay FIR filter design
- Creator
- Wu, Changzhi; Gao, David; Lay Teo, Kok
- Date
- 2013
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/39159
- Identifier
- vital:4976
- Identifier
-
https://doi.org/10.1016/j.sigpro.2013.01.015
- Identifier
- ISSN:0165-1684
- Abstract
- This paper studies the design of FIR filter with low group delay, where the desired phase response is not being approximated. It is formulated as a constrained optimization problem, which is then solved globally. Numerical experiments show that our design method can produce a filter with smaller group delay than that obtained by the existing convex optimization method used in conjunction with a minimum phase spectral factorization method under the same design criteria. Furthermore, our formulation offers us the flexibility for the trade-off between the group delay and the magnitude response directly. It also allows the feasibility of imposing constraints on the group delay. © 2013 Elsevier B.V.
- Relation
- Signal Processing Vol. 93, no. 7 (2013), p. 1764-1772
- Rights
- Copyright 2013 Elsevier B.V.
- Rights
- This metadata is freely available under a CCO license
- Subject
- 09 Engineering; 08 Information and Computing Sciences; 10 Technology; Duality; Low group delay; Semi-definite programming; Constrained optimi-zation problems; Convex optimization methods; Direct optimization; Magnitude response; Numerical experiments; Spectral factorization method; Constrained optimization; Convex optimization; FIR filters; Group delay
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