Now showing items 192-211 of 346

    Marine applications of SAR polarimetry 

    Margarit Martín, Gerard (Date of defense: 2007-07-11)

    Els oceans mantenen una fràgil i complexa cadena que enllaça un alt nombre de factors biològics, sociològics i econòmics. Actualment, aquest ecosistema està amenaçat per l'activitat humana i uns dels punts més crítics és ...

    Matrix completion with prior information in reproducing kernel Hilbert spaces 

    Giménez Febrer, Pere Joan (Date of defense: 2021-02-11)

    In matrix completion, the objective is to recover an unknown matrix from a small subset of observed entries. Most successful methods for recovering the unknown entries are based on the assumption that the unknown full ...

    Media aesthetics based multimedia storytelling. 

    Obrador Espinosa, Pere (Date of defense: 2011-07-08)

    Since the earliest of times, humans have been interested in recording their life experiences, for future reference and for storytelling purposes. This task of recording experiences --i.e., both image and video capture-- ...

    Medida de parámetros de ruido de dispositivos activos basada en fuente adaptada 

    Maya Sánchez, María del Carmen (Date of defense: 2003-12-15)

    En esta Tesis se utiliza una técnica de fuente adaptada para medir los parámetros de ruido de transistores de efecto campo, como MESFET y HEMT. Para ello, se ha implementado un sistema de medida en el margen de frecuencias ...

    Medium-transparent MAC protocols for converged optical wireless networks 

    Kalfas, Georgios (Date of defense: 2017-05-12)

    In order to address the explosive demand for high-capacity and omnipresent wireless access, modern cell-based wireless networks are slowly adopting two major solution roadmaps. The first is the employment of small-cell ...

    Métodos numéricos para aplicaciones biomédicas: problemas directo e inverso electromagnéticos 

    Mallorquí, Jordi J. (Jordi Joan) (Date of defense: 1995-05-02)

    El objetivo básico de la tesis ha sido el desarrollo de algoritmos de reconstrucción que permiten obtener imágenes de cuerpos biológicos de alto contraste. Los datos de entrada de los distintos algoritmos son los campos ...

    Micromachined polymer based components for highly integrated millimeterwave subsystems 

    Jaimes Vera, Edith Aline (Date of defense: 2012-03-16)

    La región de microondas en el espectro electromagnético tiene propiedades únicas que le permiten a las señales propagarse a través de la atmósfera bajo casi cualquier condición climática, ésta es la razón por la cual los ...

    Millimeter wave band reconfigurable circuits (from 30 to above 100 GHz) in BiCMOS-MEMS technology 

    Heredia Vega, Julio César (Date of defense: 2019-09-27)

    Actualment hi ha un ús creixent de dispositius mòbils i de la necessitat d’informació i, per això, cada vegada es necessiten sistemes sense fils amb majors velocitats de dades i més amplada de banda. A més, els sistemes ...

    Millimeter-wave and terahertz imaging techniques 

    Nova Lavado, Enrique (Date of defense: 2013-07-22)

    This thesis presents the development and assessment of imaging techniques in the millimeterwave (mmW) and terahertz frequency bands. In the first part of the thesis, the development of a 94 GHz passive screener based on a ...

    MIMO designs for filter bank multicarrier and multiantenna systems based on OQAM 

    Caus López, Màrius (Date of defense: 2013-12-18)

    From the perspective of increasingly data rate requirements in mobile communications, it is deemed necessary to do further research so that the future goals can be reached. To that end, the radio-based communications are ...

    Mobile 5G millimeter-wave multi-antenna systems 

    Ballesteros Sánchez, Christian (Date of defense: 2022-07-21)

    Massive antenna architectures and millimeter-wave bands appear on the horizon as the enabling technologies of future broadband wireless links, promising unprecedented spectral efficiency and data rates. In the recently ...

    Modelos matemáticos para reguladores conmutados continua-continua con lazo de control de corriente 

    Poveda López, Alberto (Date of defense: 1988-04-25)

    Se desarrolla un tratamiento unificado para la síntesis y la modelación de este tipo de reguladores que facilita y sistematiza el diseño de los mismos. Su síntesis permite explicar la existencia de realizaciones ya conocidas ...

    Monocular depth estimation in images and sequences using occlusion cues 

    Palou Visa, Guillem (Date of defense: 2014-02-21)

    When humans observe a scene, they are able to perfectly distinguish the different parts composing it. Moreover, humans can easily reconstruct the spatial position of these parts and conceive a consistent structure. The ...

    Multi Look-Up Table Digital Predistortion for RF Power Amplifier Linearization 

    Gilabert Pinal, Pere Lluís (Date of defense: 2008-02-12)

    Aquesta Tesi Doctoral se centra en el disseny d'un nou linealitzador de Predistorsió Digital (Digital Predistortion - DPD) capaç de compensar la dinàmica i els efectes no lineals introduïts pels Amplificadors de Potència ...

    Multi-antenna multi-frequency microwave imaging systems for biomedical applications 

    Guardiola Garcia, Marta (Date of defense: 2013-10-31)

    Medical imaging refers to several different technologies that are used to view the human body in order to diagnose, monitor, or treat medical conditions. Each type of technology gives different information about the area ...

    Multi-view depth coding based on a region representation combining color and depth information 

    Maceira Duch, Marc (Date of defense: 2017-06-21)

    Depth map data is used to supplement the color data in multi-view sequences. As depth maps present distinct Characteristics than natural color images, new coding techniques are required to represent their smooth regions ...

    Multidimensional and temporal SAR data representation and processing based on binary partition trees 

    Alonso González, Alberto (Date of defense: 2014-06-13)

    This thesis deals with the processing of different types of multidimensional SAR data for distinct applications. Instead of handling the original pixels of the image, which correspond to very local information and are ...

    Multidimensional speckle noise. Modelling and filtering related to sar data. 

    López Martinez, Carlos (Date of defense: 2003-06-02)

    Los Radares de Apertura Sintética, o sistemas SAR, representan el mejorejemplo de sistemas activos de teledetección por microondas. Debido a su naturaleza coherente, un sistema SAR es capaz de adquirir información dedispersión ...

    Multifunctional metamaterial designs for antenna applications 

    Ferrer González, Pere Josep (Date of defense: 2015-07-17)

    Over the last decades, Metamaterials (MTMs) have caught the attention of the scientific community. Metamaterials are basically artificially engineered materials which can provide unusual electromagnetic properties not ...

    Multilevel adaptive cross approximation and direct evaluation method for fast and accurate discretization of electromagnetic integral equations 

    Tamayo Palau, José María (Date of defense: 2011-02-17)

    El Método de los Momentos (MoM) ha sido ampliamente utilizado en las últimas décadas para la discretización y la solución de las formulaciones de ecuación integral que aparecen en muchos problemas electromagnéticos de ...