Title :
Filterbank design for oversampled subband adaptive filtering structures
Author :
Petraglia, M.R. ; Piber, P.R.V.
Author_Institution :
Fed. Univ. of Rio de Janeiro, Brazil
Abstract :
A simple design procedure for uniform DFT filterbanks used in oversampled subband adaptive filtering structures is presented. The analysis prototype filter is designed with extended bandwidth to obtain fast convergence. The synthesis prototype filter is then optimised to reduce the mean square error. The resulting improvements in the convergence performance are verified through computer simulations
Keywords :
FIR filters <oversampled subband adaptive filtering structs., filterbank design>; adaptive filters <oversampled subband adaptive filtering structs., filterbank design>; convergence of numerical methods <oversampled subband adaptive filtering structs., filterbank design>; least mean squares methods <oversampled subband adaptive filtering structs., filterbank design>; low-pass filters <oversampled subband adaptive filtering structs., filterbank design>; adaptive filtering structures; block LMS algorithm; computer simulations; echo impulse response; fast convergence; lowpass filter; mean square error; oversampled subband filtering structures; polyphase components; prototype filter; simple design procedure; synthesis filters; uniform DFT filterbanks; weighted overlap-add method;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20031056
