- Title
- A recursive method for the approximation of LTI systems using subband processing
- Creator
- Marelli, Damián; Fu, Minyue
- Relation
- IEEE Transactions on Signal Processing Vol. 58, Issue 3, p. 1025-1034
- Publisher Link
- http://dx.doi.org/10.1109/tsp.2009.2034933
- Publisher
- Institute of Electrical and Electronics Engineers (IEEE)
- Resource Type
- journal article
- Date
- 2010
- Description
- Using the subband technique, an LTI system can be implemented by the composition of an analysis filterbank,followed by a transfer matrix (subband model) and a synthesis filterbank. The advantage of this approach is that it offers a good tradeoff between latency and computational complexity. In this paper we propose an optimization method for approximating an LTI system using the subband technique. The proposed method includes optimal allocation of parameters from different FIR entries of the subband model, while keeping constant the total number of parameters, for a better utilization of the available coefficients. The optimization is done in a weighted least-squares sense considering either linear or logarithmic amplitude scale. Simulation results demonstrate the advantages of the proposed method when compared with classical implementation approaches using pole-zero transfer functions or segmented FFT algorithms.
- Subject
- modeling; system analysis and design; subband signal processing
- Identifier
- http://hdl.handle.net/1959.13/928757
- Identifier
- uon:10432
- Identifier
- ISSN:1053-587X
- Rights
- Copyright © 2010 IEEE. Reprinted from IEEE Transactions on Signal Processing. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Newcastle's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
- Language
- eng
- Full Text
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