Efficient implementation of class of isotropic quadratic by using Walsh-Hadamard transform

Authors
Citation
Cf. Chan, Efficient implementation of class of isotropic quadratic by using Walsh-Hadamard transform, ELECTR LETT, 35(16), 1999, pp. 1306-1308
Citations number
3
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRONICS LETTERS
ISSN journal
00135194 → ACNP
Volume
35
Issue
16
Year of publication
1999
Pages
1306 - 1308
Database
ISI
SICI code
0013-5194(19990805)35:16<1306:EIOCOI>2.0.ZU;2-M
Abstract
A method is proposed for th efficient implementation of a class of second-o rder Volterra filters where their quadratic kernels are recursively constru cted from a set of isotropic subkernels (ISKs). The quadratic kernel of thi s class of filters can be factorised into a diagonal form by a Walsh-Hadama rd transform (WHT) and be implemented using a transform-and-multiply struct ure. An algorithm for determining the quadratic ISK kernel for the nonlinea r prediction of speech signals is presented.