Manuel Duarte Ortigueira

Publication Activity (10 Years)

Years Active: 1983-2024
Publications (10 Years): 24

Top Topics

Fractional Order

Adaptive Filtering

Top Venues

Commun. Nonlinear Sci. Numer. Simul.

Signal Process.

Biomed. Signal Process. Control.

Publications

Manuel Duarte Ortigueira
Principles of fractional signal processing. Digit. Signal Process. 149 (2024)
Gabriel Bengochea, Manuel Duarte Ortigueira, Luis Verde-Star
-exponential and the solution of fractional linear time-invariant systems. Int. J. Syst. Sci. 55 (9) (2024)
Manuel Duarte Ortigueira
A Factory of Fractional Derivatives. Symmetry 16 (7) (2024)
Francisco Neves, Raul Tello Rato, Manuel Duarte Ortigueira
Trans-Boolean Cyber Physical Systems. DoCEIS (2023)
Martim Almeida, Helena Mouriño, Arnaldo G. Batista, Sara Russo, Filipa Esgalhado, Catarina R. Palma dos Reis, Fátima C. Serrano, Manuel Duarte Ortigueira
Electrohysterography extracted features dependency on anthropometric and pregnancy factors. Biomed. Signal Process. Control. 75 (2022)
Filipa Esgalhado, Valentina Vassilenko, Arnaldo Batista, Manuel Duarte Ortigueira
On the Feasibility of Real-Time HRV Estimation Using Overly Noisy PPG Signals. Comput. 11 (12) (2022)
Gabriel Bengochea, Manuel Duarte Ortigueira
Fractional derivative of power type functions. Comput. Appl. Math. 41 (8) (2022)
Müfit San, Arnaldo Batista, Sara Russo, Filipa Esgalhado, Catarina R. Palma dos Reis, Fátima C. Serrano, Manuel Duarte Ortigueira
A Preliminary Exploration of the Placental Position Influence on Uterine Electromyography Using Fractional Modelling. Sensors 22 (5) (2022)
Filipa Esgalhado, Arnaldo Batista, Valentina Vassilenko, Manuel Duarte Ortigueira
Real-Time PPG-Based HRV Implementation Using Deep Learning and Simulink. DoCEIS (2022)
Filipa Esgalhado, Arnaldo Batista, Valentina Vassilenko, Sara Russo, Manuel Duarte Ortigueira
Peak Detection and HRV Feature Evaluation on ECG and PPG Signals. Symmetry 14 (6) (2022)
Daniela Martins, Arnaldo Batista, Helena Mouriño, Sara Russo, Filipa Esgalhado, Catarina R. Palma dos Reis, Fátima C. Serrano, Manuel Duarte Ortigueira
Adaptive Filtering for the Maternal Respiration Signal Attenuation in the Uterine Electromyogram. Sensors 22 (19) (2022)
Manuel Duarte Ortigueira, Gabriel Bengochea
Bilateral Tempered Fractional Derivatives. Symmetry 13 (5) (2021)
Arnaldo G. Batista, Ricardo Cebola, Filipa Esgalhado, Sara Russo, Catarina R. Palma dos Reis, Fátima C. Serrano, Valentina Vassilenko, Manuel Duarte Ortigueira
The contractiongram: A method for the visualization of uterine contraction evolution using the electrohysterogram. Biomed. Signal Process. Control. 67 (2021)
Filipa E. Cardoso, Valentina Vassilenko, Arnaldo Batista, Paulo Bonifácio, Sergio Rico Martin, Juan Muñoz-Torrero, Manuel Duarte Ortigueira
Improvements on Signal Processing Algorithm for the VOPITB Equipment. DoCEIS (2021)
Manuel Duarte Ortigueira, J. Tenreiro Machado
On the properties of some operators under the perspective of fractional system theory. Commun. Nonlinear Sci. Numer. Simul. 82 (2020)
Filipa Esgalhado, Arnaldo Batista, Helena Mouriño, Sara Russo, Catarina R. Palma dos Reis, Fátima C. Serrano, Valentina Vassilenko, Manuel Duarte Ortigueira
Uterine contractions clustering based on electrohysterography. Comput. Biol. Medicine 123 (2020)
Filipa E. Cardoso, Arnaldo Batista, Valentina Vassilenko, Andreia Serrano, Manuel Duarte Ortigueira
Idle Tone Detection in Biomedical Signals Using Time-Frequency Techniques. DoCEIS (2020)
Manuel Duarte Ortigueira, Duarte Valério, J. Tenreiro Machado
Variable order fractional systems. Commun. Nonlinear Sci. Numer. Simul. 71 (2019)
Manuel Duarte Ortigueira, António M. Lopes, J. A. Tenreiro Machado
Corrigendum to "On the computation of the multidimensional Mittag-Leffler function" [Commun. Nonlinear Sci. Numer. Simulat. 53 (2017) 278-287]. Commun. Nonlinear Sci. Numer. Simul. 55 (2018)
Manuel Duarte Ortigueira, J. Tenreiro Machado
A critical analysis of the Caputo-Fabrizio operator. Commun. Nonlinear Sci. Numer. Simul. 59 (2018)
Dana Copot, Robin De Keyser, Eric Derom, Manuel Duarte Ortigueira, Clara M. Ionescu
Reducing bias in fractional order impedance estimation for lung function evaluation. Biomed. Signal Process. Control. 39 (2018)
Manuel Duarte Ortigueira, António M. Lopes, J. A. Tenreiro Machado
On the computation of the multidimensional Mittag-Leffler function. Commun. Nonlinear Sci. Numer. Simul. 53 (2017)
Manuel Duarte Ortigueira, Delfim F. M. Torres, Juan J. Trujillo
Exponentials and Laplace transforms on nonuniform time scales. Commun. Nonlinear Sci. Numer. Simul. 39 (2016)
Arnaldo Batista, Shirin Najdi, Daniela M. Godinho, Catarina Martins, Fátima C. Serrano, Manuel Duarte Ortigueira, Raul Tello Rato
A multichannel time-frequency and multi-wavelet toolbox for uterine electromyography processing and visualisation. Comput. Biol. Medicine 76 (2016)
Manuel Duarte Ortigueira, Clara M. Ionescu, J. Tenreiro Machado, Juan J. Trujillo
Fractional signal processing and applications. Signal Process. 107 (2015)
Manuel Duarte Ortigueira, Margarita Rivero, Juan J. Trujillo
From a generalised Helmholtz decomposition theorem to fractional Maxwell equations. Commun. Nonlinear Sci. Numer. Simul. 22 (Issues) (2015)
Manuel Duarte Ortigueira
Comments on "Discretization of fractional order differentiator over Paley-Wiener space". Appl. Math. Comput. 270 (2015)
Manuel Duarte Ortigueira, J. A. Tenreiro Machado
What is a fractional derivative? J. Comput. Phys. 293 (2015)
Valeriy Martynyuk, Manuel Duarte Ortigueira
Fractional model of an electrochemical capacitor. Signal Process. 107 (2015)
Manuel Duarte Ortigueira, Fernando J. V. Coito, Juan J. Trujillo
Discrete-time differential systems. Signal Process. 107 (2015)
Manuel Duarte Ortigueira, Juan J. Trujillo, Valery I. Martynyuk, Fernando J. V. Coito
A generalized power series and its application in the inversion of transfer functions. Signal Process. 107 (2015)
Manuel Duarte Ortigueira, J. Tenreiro Machado, Margarita Rivero, Juan J. Trujillo
Integer/fractional decomposition of the impulse response of fractional linear systems. Signal Process. 114 (2015)
Manuel Duarte Ortigueira
A simple approach to the particular solution of constant coefficient ordinary differential equations. Appl. Math. Comput. 232 (2014)
Manuel Duarte Ortigueira
Comments on "The fractional Laplace transform". Signal Image Video Process. 8 (3) (2014)
Manuel Duarte Ortigueira
On the Recursive Solution to the Normal Equations: Some Other Results [Lecture Notes]. IEEE Signal Process. Mag. 31 (2) (2014)
Manuel Duarte Ortigueira
On the particular solution of constant coefficient fractional differential equations. Appl. Math. Comput. 245 (2014)
João Caldas da Costa, Manuel Duarte Ortigueira, Arnaldo Batista, Teresa Paiva
ARMA Modelling for Sleep Disorders Diagnose. DoCEIS (2013)
Manuel Duarte Ortigueira, Margarita Rivero, Juan J. Trujillo
The Incremental Ratio Based Causal fractional Calculus. Int. J. Bifurc. Chaos 22 (4) (2012)
João Caldas da Costa, Manuel Duarte Ortigueira, Arnaldo Batista
Short Time Fourier Transform and Automatic Visual Scoring for the Detection of Sleep Spindles. DoCEIS (2012)
Carlos J. C. Matos, Manuel Duarte Ortigueira
A New Approach to Rational Discrete-Time Approximations to Continuous-Time Fractional-Order Systems. DoCEIS (2012)
Manuel Duarte Ortigueira, Richard L. Magin, Juan J. Trujillo, M. Pilar Velasco
A real regularised fractional derivative. Signal Image Video Process. 6 (3) (2012)
Richard L. Magin, Manuel Duarte Ortigueira, Igor Podlubny, Juan J. Trujillo
On the fractional signals and systems. Signal Process. 91 (3) (2011)
Manuel Duarte Ortigueira, J. A. Tenreiro Machado, Juan J. Trujillo, Blas M. Vinagre
Fractional signals and systems. Signal Process. 91 (3) (2011)
João Caldas da Costa, Manuel Duarte Ortigueira, Arnaldo Batista
ARMA Modelling of Sleep Spindles. DoCEIS (2011)
Rui Gomes, Arnaldo Batista, Manuel Duarte Ortigueira, Raul Tello Rato, Marco Baldeiras
: A Tool for the Detection and Quantification of Rail Corrugation. DoCEIS (2010)
Carlos J. C. Matos, Manuel Duarte Ortigueira
Fractional Filters: An Optimization Approach. DoCEIS (2010)
Eduardo Cardoso, Arnaldo Batista, Rui Rodrigues, Manuel Duarte Ortigueira, Cristina Bárbara, Cristina Martinho, Raul Tello Rato
A Contribution for the Automatic Sleep Classification Based on the Itakura-Saito Spectral Distance. DoCEIS (2010)
Bruno Nascimento, Arnaldo Batista, Luis Brandão Alves, Manuel Duarte Ortigueira, Raul Tello Rato
MicroECG: An Integrated Platform for the Cardiac Arrythmia Detection and Characterization. DoCEIS (2010)
Manuel Duarte Ortigueira, Fernando J. V. Coito
System initial conditions vs derivative initial conditions. Comput. Math. Appl. 59 (5) (2010)
Manuel Duarte Ortigueira
On the Fractional Linear Scale Invariant Systems. IEEE Trans. Signal Process. 58 (12) (2010)
Manuel Duarte Ortigueira
On the Linear Scale Fractional Systems - An Application of the Fractional Quantum Derivative. ICINCO-SPSMC (2009)
Cesaltina N. E. Ricardo, Manuel Duarte Ortigueira, José António Beltran Gerald
Wireless Systems New quasi-orthogonal BCH-derived sequences for CDMA applications. Eur. Trans. Telecommun. 18 (7) (2007)
Manuel Duarte Ortigueira, José António Tenreiro Machado
Fractional calculus applications in signals and systems. Signal Process. 86 (10) (2006)
Manuel Duarte Ortigueira, António Joaquim Serralheiro
A new least-squares approach to differintegration modeling. Signal Process. 86 (10) (2006)
Manuel Duarte Ortigueira
Riesz potential operators and inverses via fractional centred derivatives. Int. J. Math. Math. Sci. 2006 (2006)
Manuel Duarte Ortigueira
A coherent approach to non-integer order derivatives. Signal Process. 86 (10) (2006)
José A. L. Inácio, José António Beltran Gerald, Manuel Duarte Ortigueira
New PN Even Balanced Sequences for Spread-Spectrum Systems. EURASIP J. Wirel. Commun. Netw. 2005 (3) (2005)
M. Unterweissacher, João Goes, Nuno F. Paulino, Guiomar Evans, Manuel Duarte Ortigueira
Efficient digital self-calibration of video-rate pipeline ADCs using white Gaussian noise. ISCAS (1) (2003)
Manuel Duarte Ortigueira, José António Tenreiro Machado
Fractional signal processing and applications. Signal Process. 83 (11) (2003)
Manuel Duarte Ortigueira
On the initial conditions in continuous-time fractional linear systems. Signal Process. 83 (11) (2003)
Guiomar Evans, João Goes, Adolfo Steiger-Garção, Manuel Duarte Ortigueira, Nuno F. Paulino, Jilseph Lopes Silva
Low-voltage low-power CMOS analogue circuits for Gaussian and uniform noise generation. ISCAS (1) (2003)
Manuel Duarte Ortigueira
A new symmetric fractional B-spline. Signal Process. 83 (11) (2003)
Manuel Duarte Ortigueira, Arnaldo G. Batista
A signal processing view of differintegration. ECC (2001)
Manuel Duarte Ortigueira, Carlos J. C. Matos
New results on fractional linear prediction. ECC (2001)
Manuel Duarte Ortigueira
The comb signal and its Fourier transform. Signal Process. 81 (3) (2001)
Manuel Duarte Ortigueira
Fractional discrete-time linear systems. ICASSP (1997)
Manuel Duarte Ortigueira
A new algorithm for the factorization and inversion of recursively generated matrices. Signal Process. 52 (1) (1996)
Manuel Duarte Ortigueira
ARMA realization from the reflection coefficient sequence. Signal Process. 32 (3) (1993)
Manuel Duarte Ortigueira, Miguel Angel Lagunas
Eigendecomposition versus singular value decomposition in adaptive array signal processing. Signal Process. 25 (1) (1991)
Manuel Duarte Ortigueira, Miguel Angel Lagunas
A weighted min-norm method with a recursive implementation. ICASSP (1990)
Manuel Duarte Ortigueira, José M. Tribolet
A framework for the evaluation of spectral analysis techniques. ICASSP (1984)
Manuel Duarte Ortigueira, José M. Tribolet
On the double Levinson recursion formulation of ARMA spectral estimation. ICASSP (1983)