Now showing items 1-20 of 321

    A Bayesian approach to robust identification: application to fault detection 

    Fernández Canti, Rosa Ma. (Date of defense: 2013-02-07)

    In the Control Engineering field, the so-called Robust Identification techniques deal with the problem of obtaining not only a nominal model of the plant, but also an estimate of the uncertainty associated to the nominal ...

    A Convex Decomposition Perspective on Dynamic Bandwidth Allocation and Applications 

    Morell Pérez, Antoni (Date of defense: 2008-09-23)

    Tradicionalment, les tècniques d'accés múltiple en sistemes de comunicacions multi-usuari han estat desenvolupades o bé orientades a la connexió o bé orientades al tràfic. En el primer cas, l'objectiu és establir tants ...

    A Distributed and Heuristic Policy-based Management Architecture for Large-Scale Grids 

    Magaña Perdomo, Edgar (Date of defense: 2008-05-30)

    The aim of this thesis is to design and implement a new Grid Resource Management methodology, where non-massive resources owners would be able to share their resources and integrate human collaboration across multiple ...

    A methodological approach to policy refinement in policy-based management systems 

    Rubio Loyola, Javier (Date of defense: 2007-06-29)

    En la actualidad se están realizando diversos esfuerzos para realizar la visión fu-turista de las redes de telecomunicación autogestionadas. La gestión basada en políticas ha sido reconocida como una herramienta potencial ...

    A multi-microphone approach to speech processing in a smart-room environment 

    Abad Gareta, Alberto (Date of defense: 2007-06-29)

    Els avenços recents en tecnologia informàtica i processament de la parla i del llenguatge, entre altres, han fet possible que noves maneres de comunicació entre les persones i les màquines comencin a semblar factibles. ...

    Achievable rates for Gaussian Channels with multiple relays 

    Coso Sánchez, Aitor del (Date of defense: 2008-09-12)

    Los canales múltiple-entrada-múltiple-salida (MIMO) han sido ampliamente propuestos para superar los desvanecimientos aleatorios de canal en comunicaciones inalámbricas no selectivas en frecuencia. Basados en equipar tanto ...

    Acoustic event detection and classification 

    Temko, Andriy (Date of defense: 2007-01-23)

    L'activitat humana que té lloc en sales de reunions o aules d'ensenyament es veu reflectida en una rica varietat d'events acústics, ja siguin produïts pel cos humà o per objectes que les persones manegen. Per això, la ...

    Acoustic event detection and localization using distributed microphone arrays 

    Chakraborty, Rupayan (Date of defense: 2013-12-18)

    Automatic acoustic scene analysis is a complex task that involves several functionalities: detection (time), localization (space), separation, recognition, etc. This thesis focuses on both acoustic event detection (AED) ...

    Adaptive pre-distortion for nonlinear high power amplifiers in OFDM systems 

    Durney Wasaff, Hugo Ivan (Date of defense: 2004-07-22)

    El acelerado crecimiento de las comunicaciones a través de plataformas de transmisión en banda ancha por vía alámbrica e inalámbrica, sumado al uso cada vez más extenso de modulaciones de amplitud no constante que, debido ...

    Adaptive radio resource management for ofdma-based macro- and femtocell networks 

    Bezerra Rodrigues, Emanuel (Date of defense: 2011-07-06)

    Las demandas y expectativas de los usuarios y operadores móviles crecen sin parar y, consecuentemente, los nuevos estándares han incorporado tecnologías de acceso de radio cada vez más eficientes. Las especificaciones ...

    Advanced adaptive compensation system for free-space optical communications 

    Carrizo, Carlos E. (Date of defense: 2019-09-20)

    Massive amounts of information are created daily in commercial fields like earth observation, that must be downloaded to earth ground stations in the short time of a satellite pass. Today, much of the collected information ...

    Advanced discontinuous integral-equation schemes for the versatile electromagnetic analysis of complex structures 

    Sekulic, Ivan (Date of defense: 2019-06-13)

    Les Equacions Integrals superficials més importants són l'Equació de Camp Elèctric (EFIE), per a l'anàlisi de la dispersió electromagnètica d'objectes conductors perfectes (PEC), i la formulació Poggio–Miller–Chang–Harr ...

    Advanced GNSS-R instruments for altimetric and scatterometric applications 

    Onrubia Ibáñez, Raúl (Date of defense: 2020-03-13)

    This work is the result of more than eight years during a bachelor thesis, a master thesis, and the Ph.D. thesis dedicated to the development of the Microwave Interferometric Reflectometer (MIR) instrument. It summarizes ...

    Advanced methods for earth observation data synergy for geophysical parameter retrieval 

    Herbert, Christoph Josef (Date of defense: 2022-07-15)

    The first part of the thesis focuses on the analysis of relevant factors to estimate the response time between satellite-based and in-situ soil moisture (SM) using a Dynamic Time Warping (DTW). DTW was applied to the SMOS ...

    Advanced optical technologies for phytoplankton discrimination : application in adaptive ocean sampling networks 

    Fernández Aymerich, Ismael (Date of defense: 2016-01-25)

    There is a lack on ocean dynamics understanding, and that lead oceanographers to the need of acquiring more reliable data to study ocean characteristics. Oceanographic measurements are difficult and expensive but essential ...

    Advanced pixel selection and optimization algorithms for Persistent Scatterer Interferometry (PSI) 

    Zhao, Feng, 1992- (Date of defense: 2019-07-26)

    Ground deformation measurements can provide valuable information for minimization of associated loss and damage caused by natural and environmental hazards. As a kind of remote sensing technique, Persistent Scatterer ...

    Advanced routing mechanisms in ASON/GMPLS networks 

    Agraz Bujan, Fernando (Date of defense: 2012-10-01)

    Current network infrastructures are supported on a layered model whereby heterogeneous data traffic can be seamlessly transported. In this architecture, where client/server relationships are established between adjacent ...

    Advanced signal processing techniques for robust state estimation applications in smart grids 

    Tsitsimelis, Achilleas (Date of defense: 2020-10-14)

    Since their inception, more than one century ago, electrical grids have played the role of a critical infrastructure. During the majority of this time, power systems have not faced radical changes. In contrast, over the ...

    All-optical soliton control in photonic lattices 

    Xu, Zhiyong (Date of defense: 2007-11-27)

    Los solitones ópticos son paquetes de luz (haces y/o pulsos) que no se dispersan gracias al balance entre difracción/dispersión y no linealidad. Al propagarse e interactuar los unos con los otros muestran propiedades que ...

    Allocation designs for massive multiple access with interference cancellation 

    Molina Oliveras, Francesc (Date of defense: 2021-10-06)

    In the transition towards the next generation of wireless technology systems, the increasing number of devices curbs the potential of current wireless networks to cope with such increases in network density. Wireless ...