Zobrazeno 1 - 10
of 34
pro vyhledávání: '"Ricardo M. Campello de Souza"'
Publikováno v:
Circuits, Systems, and Signal Processing. 41:1776-1787
In this brief, we introduce a new definition for the Hilbert number transform (HNT). Our approach employs concepts related to trigonometry over finite fields and uses as a starting point a specific definition for the Fourier number transform (FNT); o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7242fe017b1292e32c02fb9ed717367
https://doi.org/10.1007/s00034-021-01834-2
https://doi.org/10.1007/s00034-021-01834-2
Publikováno v:
IEEE Transactions on Circuits and Systems II: Express Briefs. 67:775-779
The main contribution of this brief is the introduction and the characterization of a novel Chebyshev-like rational map over finite fields. The referred map is identified as $t$ -Chebyshev map and depends on the definition of a finite field tangent f
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d9e55f0f8d8fc9387bd022fad3917f4
https://doi.org/10.1109/tcsii.2019.2923879
https://doi.org/10.1109/tcsii.2019.2923879
Autor:
Gilson Jerônimo da Silva, Ricardo M. Campello de Souza, Jose R. de Oliveira Neto, Juliano B. Lima
Publikováno v:
Signal Processing. 165:72-82
In this paper, we introduce a method for computing an eigendecomposition-based discrete fractional Fourier transform (DFrFT) with reduced arithmetic complexity, when compared to the O ( N 2 ) complexity of the corresponding direct computation. Our ap
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a99ed468d1cc5d9cb32ccf0e758a4c98
https://doi.org/10.1016/j.sigpro.2019.06.032
https://doi.org/10.1016/j.sigpro.2019.06.032
Publikováno v:
Anais do XXXIX Simpósio Brasileiro de Telecomunicações e Processamento de Sinais.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd0b288e396b0cad34d516c9c5d297d7
https://doi.org/10.14209/sbrt.2021.1570726966
https://doi.org/10.14209/sbrt.2021.1570726966
Autor:
Luciano Barboza Silva, Gilson Jerônimo da Silva, Ricardo M. Campello de Souza, Hélder Barbosa
Publikováno v:
Anais de XXXVIII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::98a65d741c64903fb8b3d01ee98baae2
https://doi.org/10.14209/sbrt.2020.1570658238
https://doi.org/10.14209/sbrt.2020.1570658238
Autor:
Ricardo M. Campello de Souza, Henrique Dias Machado de Azevedo, Nadège Bouchonneau, Alex Maurício Araújo, Pedro Henrique Cavalcanti de Arruda Filho, Janardan Rohatgi
Publikováno v:
Journal of the Brazilian Society of Mechanical Sciences and Engineering. 39:3837-3848
Wind turbines are growing rapidly in size and diameter. Nowadays, most wind turbines being installed are around 100 m in height and 80–120 m in diameter. Another important characteristic of wind farms is that they are usually far from urban centers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dd22f3cda18c6b3a6af838e8eb211c29
https://doi.org/10.1007/s40430-017-0853-2
https://doi.org/10.1007/s40430-017-0853-2
Publikováno v:
IEEE Transactions on Information Theory. 63:2357-2375
In this paper, we address the problem of the universal coding of natural numbers. A new numeration system is introduced, which is based on variable- $r$ meta-Fibonacci sequences and it is a generalization of the Zeckendorf numeration system. This new
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::71055f2ef61ea10795c0f3ec57e6e921
https://doi.org/10.1109/tit.2017.2663433
https://doi.org/10.1109/tit.2017.2663433
Publikováno v:
Signal Processing. 128:409-416
In this paper, we introduce closed-form Hermite-Gaussian-like (HGL) number-theoretic transform (NTT) eigenvectors. The method for constructing such eigenvectors was inspired by a recently proposed approach, where closed-form HGL discrete Fourier tran
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1e69ea94bd4a0a64ddd6512d3781ad9b
https://doi.org/10.1016/j.sigpro.2016.04.016
https://doi.org/10.1016/j.sigpro.2016.04.016
Publikováno v:
Circuits, Systems, and Signal Processing. 36:2893-2916
In this paper, we introduce fractional number-theoretic transforms (FrNTT) based on matrix functions. In contrast to previously proposed FrNTT, our approach does not require the construction of any number-theoretic transform (NTT) eigenvectors set. T
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::99bec1d00dabdd7c412b38cb726c3a23
https://doi.org/10.1007/s00034-016-0447-8
https://doi.org/10.1007/s00034-016-0447-8
Publikováno v:
Operators and Matrices. :209-221
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5052b88c2bbe4b7d496b7ac3958222ee
https://doi.org/10.7153/oam-10-13
https://doi.org/10.7153/oam-10-13