27 citations · 229 across the 64 of their papers we have counts for
5 papers · 1 filter
A Flexible Implementation of a Matrix Laurent Series-Based 16-Point Fast Fourier and Hartley Transforms
R. C. de Oliveira, H. M. de Oliveira, R. M. Campello de Souza +1
This paper describes a flexible architecture for implementing a new fast computation of the discrete Fourier and Hartley transforms, which is based on a matrix Laurent series. The…
Close Approximations for Daublets and their Spectra
V. V. Vermehren, J. E. Wesen, H. M. de Oliveira
This paper offers a new regard on compactly supported wavelets derived from FIR filters. Although being continuous wavelets, analytical formulation are lacking for such wavelets. C…
Compactly Supported Wavelets Derived From Legendre Polynomials: Spherical Harmonic Wavelets
M. M. S. Lira, H. M. de Oliveira, M. A. Carvalho +1
A new family of wavelets is introduced, which is associated with Legendre polynomials. These wavelets, termed spherical harmonic or Legendre wavelets, possess compact support. The…
A Factorization Scheme for Some Discrete Hartley Transform Matrices
H. M. de Oliveira, R. J. Cintra, R. M. Campello de Souza
Discrete transforms such as the discrete Fourier transform (DFT) and the discrete Hartley transform (DHT) are important tools in numerical analysis. The successful application of t…
Fast Finite Field Hartley Transforms Based on Hadamard Decomposition
H. M. de Oliveira, R. G. F. Távora, R. J. Cintra +1
A new transform over finite fields, the finite field Hartley transform (FFHT), was recently introduced and a number of promising applications on the design of efficient multiple ac…