Now showing items 43-62 of 353
Closas Gómez, Pau (Date of defense: 2009-06-15)
Aquesta tesi gira al voltant del disseny de receptors per a sistemes globals de navegació per satèl·lit (Global Navigation Satellite Systems, GNSS). El terme GNSS fa referència a tots aquells sistemes de navegació basats ...
Vázquez Oliver, Miguel Ángel (Date of defense: 2014-01-24)
In order to provide wireless services for the current demand of high data rate mobile applications, more spectrally efficient systems are needed. As a matter of fact, the current wireless systems are limited by a frequency ...
Zarrinkhat, Faezeh (Date of defense: 2022-12-20)
(English) Bio-sensing technology has progressed rapidly over the past years due to their plethora of applications such as disease diagnosis, drug monitoring detection of pollutants, and disease-causing micro-organisms. ...
Ribó i Vedrilla, Serni (Date of defense: 2005-06-30)
La missió SMOS de l'Agència Europea de l'Espai (ESA) té com a objectiu mesurar la humitat del sòl i la salinitat dels oceans, paràmetres fonamentals per tal d'entendre el canvi climàtic global.<br/>MIRAS (Radiòmetre de ...
González Arbesú, José María (Date of defense: 2000-04-06)
La presente Tesis Doctoral toma como base los trabajos iniciados por investigaciones de la Universidad de Colorado(USA) orientados hacia la medida de las correintes superficiales inducidas por radiaciones electromagneticas ...
Kalalas, Charalampos (Date of defense: 2018-07-19)
The next-generation electric power system, known as smart grid, relies on a robust and reliable underlying communication infrastructure to improve the efficiency of electricity distribution. Cellular networks, e.g., LTE/LTE-A ...
Wolf, Martin (Date of defense: 2013-11-11)
If speech is acquired by a close-talking microphone in a controlled and noise-free environment, current state-of-the-art recognition systems often show an acceptable error rate. The use of close-talking microphones, however, ...
Pascual Iserte, Antonio (Date of defense: 2005-02-17)
Esta tesis aborda el problema del diseño de sistemas multiantena, donde el caso más general corresponde a un canal multi-input-multi-output (MIMO) con un transmisor y un receptor con más de una antena. La ventaja de estos ...
Chochol, Marcin (Date of defense: 2013-11-25)
Nowadays, due to huge deployment of optical transport networks, a continuous increase towards higher data rates up to 100 Gb/s and beyond is observed. Furthermore, an evolution of the current optical networks is forecasted, ...
Schrenk, Bernhard (Date of defense: 2011-04-28)
El estudio e investigación en el campo de las redes ópticas de acceso han sido fomentadas en años recientes debido a la continua migración de Servicios multimedia que son ofrecidos a través de Internet. Aunque los dispositivos ...
Aravanis, Alexios (Date of defense: 2019-09-09)
Ultra dense networks (UDNs) allow for efficient spatial reuse of the spectrum, giving rise to substantial capacity and power gains. In order to exploit those gains, tractable mathematical models need to be derived, allowing ...
Manso Fernández Argüelles, Carlos Agustín (Date of defense: 2023-05-18)
(English) Transport networks are segmented by different technologies and domains, what makes difficult automated end-to-end operations and making direct human intervention needed to deploy connectivity services. On top ...
Pereira, Roberto Matheus Pinheiro (Date of defense: 2023-12-19)
(English) In many modern signal processing applications, traditional machine learning and pattern recognition methods heavily rely on the having a sufficiently large amount of data samples to correctly estimate the underlying ...
Notivol Calleja, Luis David (Date of defense: 2019-12-09)
Telecom carriers have to adapt their networks to accommodate a growing volume of users, services and traffic. Thus, they have to search a continuous maximization of efficiency and reduction in costs. This thesis identifies ...
Raschellà, Alessandro (Date of defense: 2015-05-27)
Cognitive Radio (CR) paradigm represents an innovative solution to mitigate the spectrum scarcity problem by enabling Dynamic Spectrum Access (DSA), defined in order to conciliate the existing conflicts between the ...
Berbakov, Lazar (Date of defense: 2013-07-11)
In recent years, wireless sensor networks have attracted considerable attention in the research community. Their development, induced by technological advances in microelectronics, wireless networking and battery fabrication, ...
Valles Sales, Araceli (Date of defense: 2014-09-25)
The development of new materials impacts on all branches of engineering and, in particular, in aerospace engineering. Metallic glasses (MG) are relatively newcomers to the world of materials science and have excellent ...
Pastore, Adriano (Date of defense: 2014-07-26)
The present thesis studies information rates for reliable transmission of information over fading channels in the realistic situation where the receiver has only imperfect channel-state knowledge. Of particular interest ...
Lagunas Targarona, Eva (Date of defense: 2014-03-07)
Signal acquisition is a main topic in signal processing. The well-known Shannon-Nyquist theorem lies at the heart of any conventional analog to digital converters stating that any signal has to be sampled with a constant ...
Salvador, Amaia (Date of defense: 2019-06-27)
In the past decade, deep neural networks have revolutionized computer vision. High performing deep neural architectures trained for visual recognition tasks have pushed the field towards methods relying on learned image ...