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Listar Teoría de la Señal y Comunicaciones por autor "Madero Ayora, María José"
Mostrando ítems 1-20 de 24
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Artículo
A bivariate volterra series model for the design of power amplifier digital predistorters
Crespo Cadenas, Carlos; Madero Ayora, María José; Becerra González, Juan Antonio (MDPI, 2021)The operation of the power amplifier (PA) in wireless transmitters presents a trade-off between linearity and power ...
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Artículo
A Doubly Orthogonal Matching Pursuit Algorithm for Sparse Predistortion of Power Amplifiers
Becerra González, Juan Antonio; Madero Ayora, María José; Reina Tosina, Luis Javier; Crespo Cadenas, Carlos; García-Frías, Javier; Arce, Gonzalo (IEEE, 2018-08)This letter presents a new method for the digital predistortion (DPD) of power amplifiers (PAs) based on sparse behavioral ...
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Artículo
A New Approach to Pruning Volterra Models for Power Amplifiers
Crespo Cadenas, Carlos; Reina Tosina, Luis Javier; Madero Ayora, María José; Muñoz-Cruzado, Jesús (IEEE, 2010-04)The objective of this paper is to present an approach to behavioral modeling that can be applied to predict the nonlinear ...
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Artículo
A Sparse-Bayesian Approach for the Design of Robust Digital Predistorters Under Power-Varying Operation
Crespo Cadenas, Carlos; Madero Ayora, María José; Becerra González, Juan Antonio; Cruces Álvarez, Sergio Antonio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2022)In this article, a sparse-Bayesian treatment is proposed to solve the crucial questions posed by power amplifier (PA) ...
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Artículo
Amplifier Nonlinear Modeling with RF Pulses
Crespo Cadenas, Carlos; Reina Tosina, Luis Javier; Madero Ayora, María José (IEEE, 2008-11)This paper proposes a Volterra kernel identification procedure for wireless amplifiers with nonlinear memory. The technique ...
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Artículo
An Impedance-Based Model for the Evaluation of IM3 in Nonlinear Amplifiers Showing Memory Effects
Madero Ayora, María José; Reina Tosina, Luis Javier; Crespo Cadenas, Carlos (Wiley, 2008-03)A simple model that captures nonlinear memory effects inwideband amplifiers is presented in this work. The model defines ...
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Artículo
An Upgraded Dual-Band Digital Predistorter Model for Power Amplifiers Linearization
Pérez Hernández, Abraham; Becerra González, Juan Antonio; Madero Ayora, María José; Crespo Cadenas, Carlos (IEEE, 2021-01)Digital predistortion (DPD) based on Volterra models is commonly employed to counteract the nonlinear distortion of power ...
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Tesis Doctoral
Analysis and experimental characterization of nonlinear circuits applied to wireless communications systems
Madero Ayora, María José (2008)La Tesis realizada pretende dar una visión amplia y detallada sobre el análisis de circuitos no lineales para comunicaciones ...
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Artículo
Circuit-level simulation of W-CDMA communication systems applied to the analysis of nonlinear distortion
Madero Ayora, María José; Reina Tosina, Luis Javier; Freire-Pérez, Ramón; Crespo Cadenas, Carlos (Wiley, 2004-11)Different circuit-level approaches to analyze the effects of non linear distortion on coded division multiple access (CDMA) ...
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Artículo
Comparative Analysis of Greedy Pursuits for the Order Reduction of Wideband Digital Predistorters
Becerra González, Juan Antonio; Madero Ayora, María José; Crespo Cadenas, Carlos (IEEE, 2019-09)This paper provides a review of greedy pursuits for optimizing Volterra-based behavioral models structure and estimating ...
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Artículo
Digital predistortion of power amplifiers using structured compressed-sensing Volterra series
Becerra González, Juan Antonio; Madero Ayora, María José; Reina Tosina, Luis Javier; Crespo Cadenas, Carlos (The Institution of Engineering and Technology, 2017-01)Digital predistortion has become an attractive technique for power amplifier linearisation whose limiting factor for using ...
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Artículo
Digital predistortion technique with in-band interference optimisation applied to DVB-T2
Allegue-Martínez, Michel; Madero Ayora, María José; Doblado, J.G.; Crespo Cadenas, Carlos; Reina Tosina, Luis Javier; Baena Lecuyer, Vicente (The Institution of Engineering and Technology, 2012-05)The efficient transmission and nonlinear modelling of orthogonal frequency division multiplexing (OFDM) signals are difficult ...
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Artículo
Experimental study of two-tone intermodulation products in a communications modulator
Madero Ayora, María José; Allegue-Martínez, Michel; Crespo Cadenas, Carlos; Reina Tosina, Luis Javier; Navarro-Lázaro, Javier (Wiley, 2011-01)This article presents the experimental nonlinear characterization of a quadrature modulator following a two‐tone test ...
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Artículo
Formal deduction of a Volterra series model for complex-valued systems
Crespo Cadenas, Carlos; Madero Ayora, María José; Reina Tosina, Luis Javier; Becerra González, Juan Antonio (Elsevier, 2017-02)This paper demonstrates a general model for nonlinear systems with complex-valued inputs and its application to communication ...
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Tesis Doctoral
Modeling and compensation of non-linear effects in wireless communications systems
Allegue-Martínez, Michel (2012)La Ingeniería de Microondas y Radiofrecuencia ha ido adquiriendo una importancia cada vez mayor en los últimos años, ...
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Artículo
Nonlinear effects in lte downlink signals and application of a compensation technique at the receiver side
Allegue-Martínez, Michel; Madero Ayora, María José; Crespo Cadenas, Carlos; Reina Tosina, Luis Javier; Bernardo, Francisco (Wiley, 2012-01)This article proposes a nonlinear compensation technique for long-term evolution downlink signals based on the memoryless ...
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Artículo
On the Optimum Number of Coefficients of Sparse Digital Predistorters: A Bayesian Approach
Becerra González, Juan Antonio; Madero Ayora, María José; Noguer, Rafael G.; Crespo Cadenas, Carlos (IEEE, 2020-12)This work presents insights on the application of the Bayesian information criterion (BIC) to fix the optimum number of ...
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Artículo
Performance of a behavioral model with long-term memory effects
Crespo Cadenas, Carlos; Reina Tosina, Luis Javier; Madero Ayora, María José (Cambridge University Press, 2013-08)This paper presents a new behavioral model for power amplifiers that accomplishes the capture of nonlinear low-frequency ...
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Artículo
Principales problemas de los profesores principiantes en la enseñanza universitaria
Madero Ayora, María José; Fondón García, Irene; Sarmiento Vega, María Auxiliadora (2010)Se presentan y discuten algunas reflexiones sobre los principales problemas que los profesores principiantes encuentran ...
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Ponencia
Simulation of nonlinear distortion in W-CDMA communication circuits
Reina Tosina, Luis Javier; Madero Ayora, María José; Crespo Cadenas, Carlos; Freire-Pérez, Ramón (Society of Photo-optical Instrumentation Engineers (SPIE), 2004-04)Different circuit-level approaches to study the effects of nonlinear distortion on coded division multiple access (CDMA) ...