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Browse Journals & Magazines > Signal Processing, IEEE Trans ...> Volume:43 Issue:1 Help

Levinson-type algorithms for polynomial fitting and for Cholesky and Q factors of Hankel and Vandermonde matrices

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2 Author(s)
Porsani, M.J. ; Programa de Pesquisa e Pos-Graduacao em Geofisica, Univ. Federal da Bahia, Salvador, Brazil ; Ulrych, T.J.

This paper presents Levinson (1947)-type algorithms for (i) polynomial fitting (ii) obtaining a Q decomposition of Vandermonde matrices and a Cholesky factorization of Hankel matrices (iii) obtaining the inverse of Hankel matrices. The algorithm for the least-squares solution of Hankel systems of equations requires 3n2+9n+3 multiply and divide operation (MDO). The algorithm for obtaining an orthogonal representation of an (m×n) Vandermonde matrix X and computing the Cholesky factors F of Hankel matrices requires 5mn+n2 +2n-3m MDO, and the algorithm for generating the inverse of Hankel matrices requires 3(n2+n-2)/2 MDO. Our algorithms have been tested by means of fitting of polynomials of various orders and Fortran versions of all subroutines are provided in the Appendix

Published in:
Signal Processing, IEEE Transactions on  (Volume:43 ,  Issue: 1 )

Date of Publication: Jan 1995

Page(s):
63 - 70
ISSN :
1053-587X
INSPEC Accession Number:
4889121
Digital Object Identifier :
10.1109/78.365286
Product Type:
Journals & Magazines
Date of Current Version :
06 August 2002
Issue Date :
Jan 1995
Sponsored by :
IEEE Signal Processing Society

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