Adaptive filtering using fast affine projection adaptation

Details Adaptive filtering using fast affine projection adaptation Adaptive filtering using fast affine projection adaptation

H - Electricity

03

H

H03H 21/00 (2006.01) G10K 11/175 (2006.01) H04B 3/23 (2006.01) H04M 1/20 (2006.01)

Patent

CA 2573568

A method of adaptive filtering using fast affine projection (FAP) that allows for direct solution of the projected error vector from the autocorrelation matrix using a backward and forward recursion technique or LDLT factorization of the autocorrelation matrix followed by forward substitution, scaling and backward substitution. The method results in less computational complexity in the implementation, while still having good stability and fast convergence.

Procédé de filtrage adaptatif utilisant une projection affine rapide (FAP) qui prévoit une solution directe du vecteur d~erreur projeté provenant de la matrice d~autocorrélation utilisant une technique de récursivité arrière et avant ou une factorisation LDLT de la matrice d~autocorrélation suivie par une substitution avant, une mise à l~échelle et une substitution arrière. Le procédé aboutit à une complexité calculatoire inférieure dans la mise en AEuvre tout en ayant toujours une bonne stabilité et une convergence rapide.

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