Manuel Duarte Ortigueira

Manuel Duarte Ortigueira, Margarita Rivero, Juan J. Trujillo: The Incremental Ratio Based Causal fractional Calculus. I. J. Bifurcation and Chaos 22(4) (2012)

Manuel Duarte Ortigueira, Richard L. Magin, Juan J. Trujillo, M. Pilar Velasco: A real regularised fractional derivative. Signal, Image and Video Processing 6(3): 351-358 (2012)

Carlos Matos, Manuel Duarte Ortigueira: A New Approach to Rational Discrete-Time Approximations to Continuous-Time Fractional-Order Systems. DoCEIS 2012: 251-258

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: 267-272

Manuel Duarte Ortigueira: Fractional Calculus for Scientists and Engineers. Lecture Notes in Electrical Engineering 84, Springer 2011, isbn 978-94-007-0746-7, pp. 1-152

Manuel Duarte Ortigueira, J. A. Tenreiro Machado, Juan J. Trujillo, Blas M. Vinagre: Fractional signals and systems. Signal Processing 91(3): 349 (2011)

Richard L. Magin, Manuel Duarte Ortigueira, Igor Podlubny, Juan J. Trujillo: On the fractional signals and systems. Signal Processing 91(3): 350-371 (2011)

João Caldas da Costa, Manuel Duarte Ortigueira, Arnaldo Batista: ARMA Modelling of Sleep Spindles. DoCEIS 2011: 341-348

Manuel Duarte Ortigueira, Fernando J. Coito: System initial conditions vs derivative initial conditions. Computers & Mathematics with Applications 59(5): 1782-1789 (2010)

Manuel Duarte Ortigueira: On the Fractional Linear Scale Invariant Systems. IEEE Transactions on Signal Processing 58(12): 6406-6410 (2010)

Carlos Matos, Manuel Duarte Ortigueira: Fractional Filters: An Optimization Approach. DoCEIS 2010: 361-366

Bruno Nascimento, Arnaldo Batista, Luis Brandão Alves, Manuel Duarte Ortigueira, Raul Rato: MicroECG: An Integrated Platform for the Cardiac Arrythmia Detection and Characterization. DoCEIS 2010: 367-373

Eduardo Cardoso, Arnaldo Batista, Rui Rodrigues, Manuel Duarte Ortigueira, Cristina Bárbara, Cristina Martinho, Raul Rato: A Contribution for the Automatic Sleep Classification Based on the Itakura-Saito Spectral Distance. DoCEIS 2010: 374-381

Rui Gomes, Arnaldo Batista, Manuel Duarte Ortigueira, Raul Rato, Marco Baldeiras: Railscan: A Tool for the Detection and Quantification of Rail Corrugation. DoCEIS 2010: 401-408

Manuel Duarte Ortigueira: On the Linear Scale Fractional Systems - An Application of the Fractional Quantum Derivative. ICINCO-SPSMC 2009: 196-202

Cesaltina N. E. Ricardo, Manuel Duarte Ortigueira, José António B. Gerald: Wireless Systems New quasi-orthogonal BCH-derived sequences for CDMA applications. European Transactions on Telecommunications 18(7): 803-810 (2007)

Manuel Duarte Ortigueira: Riesz potential operators and inverses via fractional centred derivatives. Int. J. Math. Mathematical Sciences 2006 (2006)

Manuel Duarte Ortigueira, José António Tenreiro Machado: Fractional calculus applications in signals and systems. Signal Processing 86(10): 2503-2504 (2006)

Manuel Duarte Ortigueira: A coherent approach to non-integer order derivatives. Signal Processing 86(10): 2505-2515 (2006)

Manuel Duarte Ortigueira, António Serralheiro: A new least-squares approach to differintegration modeling. Signal Processing 86(10): 2582-2591 (2006)

J. A. L. Inácio, José António B. Gerald, Manuel Duarte Ortigueira: New PN Even Balanced Sequences for Spread-Spectrum Systems. EURASIP J. Wireless Comm. and Networking 2005(4): 447-458 (2005)

Manuel Duarte Ortigueira, José António Tenreiro Machado: Fractional signal processing and applications. Signal Processing 83(11): 2285-2286 (2003)

Manuel Duarte Ortigueira: On the initial conditions in continuous-time fractional linear systems. Signal Processing 83(11): 2301-2309 (2003)

Manuel Duarte Ortigueira: A new symmetric fractional B-spline. Signal Processing 83(11): 2311-2318 (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: 145-148

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: 877-880

Manuel Duarte Ortigueira: The comb signal and its Fourier transform. Signal Processing 81(3): 581-592 (2001)