Efficient filtering structure for spline interpolation and decimation

Autor(es)

Lamb, D. ^[1] ; Chamon, L. F. O. ^[1] ; Nascimento, V. H. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Elect Syst, BR-05508 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ELECTRONICS LETTERS; v. 52, n. 1, p. 39-40, JAN 8 2016.
• Citações Web of Science: 6

Resumo

An efficient structure for spline-based fractional delay filtering for interpolation/decimation is introduced. Inspired by the Newton structures for Lagrange interpolation, it requires less than half the number of operations of a typical Farrow implementation. Moreover, it displays better frequency response characteristics than Lagrange-based filters. To obtain this structure, a matrix form of the Farrow transfer function is proposed and used to derive state-space transformations between the Lagrange-Farrow structure and its Newton counterpart. These transformations are then applied to the spline polynomial, giving rise to the efficient Newton-like spline filtering method. (AU)

• Processo FAPESP: 14/04256-2 - Algoritmos de baixo custo computacional para estimação de parâmetros
• Beneficiário: Vitor Heloiz Nascimento
• Modalidade de apoio: Auxílio à Pesquisa - Regular