Ara mostrant els elements 125-144 de 347
Izquierdo Fernández, Benjamín (Data de defensa: 2011-09-22)
Introduction of wireless communications systems in railway communications are at the origin of this thesis. Ifercat, the company in charge of the development of Línia 9 of Barcelona Metro, decided that wireless systems ...
Villarino Villarino, Ramón María (Data de defensa: 2004-09-08)
El estudio de la medida de la salinidad del océano junto con la humedad del terreno constituyen dos de las aplicaciones más importantes dentro del mundo de la teledetección que no han sido estudiadas hasta la fecha. ...
Oikonomakou, Maria (Data de defensa: 2019-04-10)
During the recent years, a huge augmentation of the data traffic volume has been noticed, while a further steep increase is expected in the following years. As a result, questions have been raised over the years about the ...
Miliotis, Vasileios (Data de defensa: 2016-03-11)
Mobile data offloading has been proposed as a solution for the network congestion problem that is continuously aggravating due to the increase in mobile data demand. The concept of offloading refers to the exploitation of ...
Sharifi, Leila (Data de defensa: 2016-11-23)
Energy has been emerged as a first-class computing resource in modern systems. The trend has primarily led to the strong focus on reducing the energy consumption of data centers, coupled with the growing awareness of the ...
Liesegang Maria, Sergi (Data de defensa: 2022-11-07)
In the last few years, a lot of effort has been put into the development of the fifth generation of cellular networks (5G). Given the vast heterogeneity of devices coexisting in these networks, new approaches have been ...
Predojev, Tatiana (Data de defensa: 2014-10-06)
Esta tesis estudia sistemas Machine-to-Machine (M2M) en los que se ejecutan tareas de manera autónoma sin, o con mínima intervención humana. Los sistemas M2M están formados por dispositivos desplegados en un entorno que ...
Nogueiras Rodríguez, Albino (Data de defensa: 1999-11-22)
En esta tesis se aborda el entrenamiento discriminativo de unidades subléxicas utilizando bases de datos de propósito geneal. Las unidades subléxicas son la base de funcionamiento de los sistemas de reconocimiento de grandes ...
Calvo Fullana, Miguel (Data de defensa: 2017-07-25)
Long thought to be an unattainable ambition, self-sustainable and green-powered wireless networks are rapidly becoming a reality. This is driven by recent hardware improvements in what is known as Energy Harvesting (EH). ...
Castanys Tutzó, Mireia (Data de defensa: 2009-04-24)
L'espectroscòpia Raman és una tècnica fotònica molt emprada per l'anàlisi i la caracterització de materials. Entre les seves aplicacions destaca el seu ús en l'estudi del patrimoni cultural, on s'aplica per exemple en ...
Krkotic, Patrick (Data de defensa: 2022-11-25)
(English) The Future Circular Hadron Collider (FCC-hh) is a proposal for a 100-kilometre-long particle accelerator with collision energy substantially higher than previous colliders to expand the Large Hadron Collider (LHC) ...
Monerris Belda, Alessandra (Data de defensa: 2009-09-07)
Tot i que l'aigua retinguda pel sòl constitueix una petita fracció del volum total d'aigua que hi ha a la Terra, l'humitat del sòl juga un paper important als models climàtics i hídrics. La radiometria en banda L (1.400 a ...
Mesodiakaki, Agapi (Data de defensa: 2015-11-09)
The main objective of this thesis is to propose and evaluate medium access layer algorithms, that will exploit different types of cognition to provide energy and spectrum efficiency enhancement. In particular, two main ...
Ntontin, Konstantinos (Data de defensa: 2015-11-03)
As the data rate demands of the cellular users increase, together with their number, it is expected that unprecedented capacity demands should be met in wireless networks in the forthcoming years. However, the energy ...
Barrios Porras, Ricardo (Data de defensa: 2013-05-17)
Free-space optical (FSO) communications is drawing increasing attention as a promising technology to overcome bandwidth shortage, of an evermore crowded wireless marketplace. Currently radio-frequency (RF) technology ...
Espinosa Duró, Virginia (Data de defensa: 2013-06-14)
Face recognition (FR) has been extensively studied, due to both scientific fundamental challenges and current and potential applications where human identification is needed. FR systems have the benefits of their non ...
Bartolomé Calvo, Diego (Data de defensa: 2005-01-12)
Aquesta tesi es dedica a l'anàlisi de la justícia a la capa física en entorns de comunicacions amb múltiples antenes i diversos usuaris, cosa que implica un nou punt de vista sobre problemas tradicionals. Malgrat això, el ...
Butko, Taras (Data de defensa: 2011-07-08)
The detection of the Acoustic Events (AEs) naturally produced in a meeting room may help to describe the human and social activity. The automatic description of interactions between humans and environment can be useful for ...
Sacristán Murga, Daniel Francisco (Data de defensa: 2012-07-19)
This dissertation deals with the proper design of efficient feedback strategies for Multiple-Input Multiple-Output (MIMO) communication systems. MIMO systems outperform single antenna systems in terms of achievable throughput ...
Rey Micolau, Francesc (Data de defensa: 2006-05-12)
(Català) En els sistemes de comunicacions on el transmissor disposa de certa informació sobre l'estat del canal (CSI), es possible dissenyar esquemes lineals de precodificació que assignin la potència de manera òptima ...