Ricardo M. Campello de Souza

Publication Activity (10 Years)

Years Active: 1985-2022
Publications (10 Years): 31

Top Topics

Division Multiple Access

Fourier Transform

Image Encryption

Eigendecomposition

Top Venues

Signal Process.

Circuits Syst. Signal Process.

Publications

Juliano B. Lima, Marcos A. A. Gondim, Ricardo M. Campello de Souza
A Novel Approach for Defining a Hilbert Number Transform. Circuits Syst. Signal Process. 41 (3) (2022)
Juliano B. Lima, Ricardo M. Campello de Souza
Tangent Function and Chebyshev-Like Rational Maps Over Finite Fields. IEEE Trans. Circuits Syst. II Express Briefs (4) (2020)
José R. de Oliveira-Neto, Juliano B. Lima, Gilson Jerônimo da Silva Jr., Ricardo M. Campello de Souza
Computation of an eigendecomposition-based discrete fractional Fourier transform with reduced arithmetic complexity. Signal Process. 165 (2019)
Bruno Tenório Ávila, Ricardo M. Campello de Souza
Meta-Fibonacci Codes: Efficient Universal Coding of Natural Numbers. IEEE Trans. Inf. Theory 63 (4) (2017)
Paulo Hugo E. S. Lima, Juliano B. Lima, Ricardo M. Campello de Souza
Fractional Fourier, Hartley, Cosine and Sine Number-Theoretic Transforms Based on Matrix Functions. Circuits Syst. Signal Process. 36 (7) (2017)
Ricardo M. Campello de Souza, Hélio M. de Oliveira, Renato J. Cintra
Multiuser Communication Based on the DFT Eigenstructure. CoRR (2017)
Juliano B. Lima, Edmar S. da Silva, Ricardo M. Campello de Souza
Cosine transforms over fields of characteristic 2: Fast computation and application to image encryption. Signal Process. Image Commun. 54 (2017)
Juliano B. Lima, Ricardo M. Campello de Souza
Closed-form Hermite-Gaussian-like number-theoretic transform eigenvectors. Signal Process. 128 (2016)
Juliano B. Lima, Marco Barone, Ricardo M. Campello de Souza
Cosine transforms over fields of characteristic 2. Finite Fields Their Appl. 37 (2016)
Hélio M. de Oliveira, Viviane L. Sousa, A. N. Helfarne, Ricardo M. Campello de Souza
Radix-2 Fast Hartley Transform Revisited. CoRR (2015)
Juliano B. Lima, Edmar S. da Silva, Ricardo M. Campello de Souza
A finite field cosine transform-based image processing scheme for color image encryption. GlobalSIP (2015)
Ricardo M. Campello de Souza, Hélio M. de Oliveira, D. Silva
The Z Transform over Finite Fields. CoRR (2015)
Hélio M. de Oliveira, Ricardo M. Campello de Souza
Orthogonal Multilevel Spreading Sequence Design. CoRR (2015)
R. F. B. Sotero Filho, Hélio M. de Oliveira, Ricardo M. Campello de Souza
A Full Frequency Masking Vocoder for Legal Eavesdropping Conversation Recording. CoRR (2015)
Gilson Jerônimo da Silva Jr., Ricardo M. Campello de Souza, Hélio M. de Oliveira
New Algorithms for Computing a Single Component of the Discrete Fourier Transform. CoRR (2015)
Ricardo M. Campello de Souza, Eduarda S. V. Freire, Hélio M. de Oliveira
Fourier Codes. CoRR (2015)
M. M. Campello de Souza, Hélio M. de Oliveira, Ricardo M. Campello de Souza, M. M. Vasconcelos
The Discrete Cosine Transform over Prime Finite Fields. CoRR (2015)
Hélio M. de Oliveira, R. G. F. Távora, Renato J. Cintra, Ricardo M. Campello de Souza
Fast Finite Field Hartley Transforms Based on Hadamard Decomposition. CoRR (2015)
Hélio M. de Oliveira, C. M. F. Barros, Ricardo M. Campello de Souza
Fourier Codes and Hartley Codes. CoRR (2015)
E. A. Bouton, Hélio M. de Oliveira, Ricardo M. Campello de Souza, N. S. Santos-Magalhães
Genomic Imaging Based on Codongrams and a^2grams. CoRR (2015)
M. M. S. Lira, Hélio M. de Oliveira, Renato J. Cintra, Ricardo M. Campello de Souza
Wavelets for Elliptical Waveguide Problems. CoRR (2015)
M. M. S. Lira, Hélio M. de Oliveira, M. A. Carvalho Jr., Ricardo M. Campello de Souza
Compactly Supported Wavelets Derived From Legendre Polynomials: Spherical Harmonic Wavelets. CoRR (2015)
Renato J. Cintra, Vassil S. Dimitrov, Hélio M. de Oliveira, Ricardo M. Campello de Souza
Fragile Watermarking Using Finite Field Trigonometrical Transforms. CoRR (2015)
P. Carrion, Hélio M. de Oliveira, Ricardo M. Campello de Souza
A Low-throughput Wavelet-based Steganography Audio Scheme. CoRR (2015)
Hélio M. de Oliveira, Joao Paulo C. L. Miranda, Ricardo M. Campello de Souza
Spread-Spectrum Based on Finite Field Fourier Transforms. CoRR (2015)
R. C. de Oliveira, Hélio M. de Oliveira, Ricardo M. Campello de Souza, E. J. P. Santos
A Flexible Implementation of a Matrix Laurent Series-Based 16-Point Fast Fourier and Hartley Transforms. CoRR (2015)
Hélio M. de Oliveira, Renato J. Cintra, Ricardo M. Campello de Souza
Multilayer Hadamard Decomposition of Discrete Hartley Transforms. CoRR (2015)
Ricardo M. Campello de Souza, Hélio M. de Oliveira, A. N. Kauffman
The Hartley Transform in a Finite Field. CoRR (2015)
Hélio M. de Oliveira, Ricardo M. Campello de Souza, A. N. Kauffman
Efficient Multiplex for Band-Limited Channels: Galois-Field Division Multiple Access. CoRR (2015)
Hélio M. de Oliveira, Renato J. Cintra, Ricardo M. Campello de Souza
A Factorization Scheme for Some Discrete Hartley Transform Matrices. CoRR (2015)
Hélio M. de Oliveira, Ricardo M. Campello de Souza, R. C. de Oliveira
A Matrix Laurent Series-based Fast Fourier Transform for Blocklengths N=4 (mod 8). CoRR (2015)
Juliano B. Lima, Ricardo M. Campello de Souza, Paulo Hugo E. S. Lima
Fractional number-theoretic transforms based on matrix functions. ICASSP (2014)
R. C. de Oliveira, Ricardo M. Campello de Souza, Hélio M. de Oliveira
Matrix expansions for computing the discrete hartley transform for blocklength N ≡ 0 (mod 4). LATINCOM (2012)
Juliano B. Lima, Ricardo M. Campello de Souza, Daniel C. Cunha
Multiuser communication based on the discrete fractional fourier transform. ICC (2012)
Juliano B. Lima, Ricardo M. Campello de Souza
The fractional Fourier transform over finite fields. Signal Process. 92 (2) (2012)
Juliano B. Lima, Ricardo M. Campello de Souza
Histogram Uniformization for Digital Image Encryption. SIBGRAPI (2012)
Juliano B. Lima, Ricardo M. Campello de Souza
Finite field trigonometric transforms. Appl. Algebra Eng. Commun. Comput. 22 (5-6) (2011)
Juliano B. Lima, Ricardo M. Campello de Souza
The finite field fractional Fourier transform. ICASSP (2010)
Juliano B. Lima, Daniel Panario, Ricardo M. Campello de Souza
Public-key encryption based on Chebyshev polynomials over GF(q). Inf. Process. Lett. 111 (2) (2010)
Renato J. Cintra, Vassil S. Dimitrov, Hélio M. de Oliveira, Ricardo M. Campello de Souza
Fragile watermarking using finite field trigonometrical transforms. Signal Process. Image Commun. 24 (7) (2009)
Juliano B. Lima, Ricardo M. Campello de Souza, Daniel Panario
Security of public-key cryptosystems based on Chebyshev polynomials over prime finite fields. ISIT (2008)
Juliano B. Lima, Ricardo M. Campello de Souza, Hélio M. de Oliveira, M. M. Campello de Souza
Faster DTMF Decoding. ICT (2004)
M. M. Campello de Souza, Hélio M. de Oliveira, Ricardo M. Campello de Souza, M. M. Vasconcelos
The Discrete Cosine Transform over Prime Finite Fields. ICT (2004)
Ricardo M. Campello de Souza, Patrick Guy Farrell
Finite field transforms and symmetry groups. Discret. Math. 56 (2-3) (1985)