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Stable, causal, perfect reconstruction, IIR uniform DFT filter banks

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1 Author(s)
Klouche-Djedid, A. ; Dept. of Eng., Warwick Univ., Coventry, UK

A simple design procedure for stable, causal and perfect reconstruction infinite impulse response parallel uniform discrete Fourier transform filter banks (DFT FBs) based on a new polyphase decomposition, the `polyphase-oversampled' FB, is presented. The proposed design results in causal and stable analysis and synthesis filters that are all derived from a single prototype filter, resulting in efficient realisations. A discussion of the FB numerical properties and some design examples are provided

Published in:

Electronics Letters  (Volume:34 ,  Issue: 17 )