Mostrando ítems 267-286 de 353
Centolanza, Giuseppe (Fecha de defensa: 2015-10-23)
The Earth is continuously monitored by sensors capable of providing diversified information about several phenomena. In particular Synthetic Aperture Radar (SAR) is able to observe the Earth in all-day and all-weather ...
Alemany Prats, Pol (Fecha de defensa: 2023-03-23)
(English) The telecommunications' systems are becoming much more intelligent and dynamic due to the expansion of the multiple network types (i.e., wired, wireless, Internet of Things (IoT) and cloud-based networks). Due ...
Blasco Coll, Andreu (Fecha de defensa: 2023-09-27)
(English) Quantum computers use the laws of quantum mechanics to do complex operations that classical computers can't solve. Quantum computers and other physical quantum systems require quantum information to be completely ...
Balcells Ventura, Jordi (Fecha de defensa: 2011-05-20)
Els serveis de telecomunicacions i sistemes radar estan migrant a freqüències mil•limètriques (MMW), on es disposa d 'una major amplada de banda i conseqüentment d'una major velocitat de transmissió de dades. Aquesta ...
Guerra Gómez, Rolando (Fecha de defensa: 2023-05-19)
(English) The Fifth-Generation (5G) of cellular networks significantly increases the performance and flexibility of the offered services to users and service providers. The strict network requirement of 5G use cases has ...
Gómez, Ismael (Fecha de defensa: 2013-12-19)
The aim of this thesis is defining and developing the concept of an efficient management of radio and computing resources in an SDR cloud. The SDR cloud breaks with today's cellular architecture. A set of distributed ...
Querol Borràs, Jorge (Fecha de defensa: 2018-11-09)
Radio-Frequency Interference (RFI) signals are undesired signals that degrade or disrupt the performance of a wireless receiver. RFI signals can be troublesome for any receiver, but they are especially threatening for ...
Tarongí Bauzá, José Miguel (Fecha de defensa: 2013-03-06)
Microwave radiometry field has been increasing its performance with higher accuracy measurements, leading to a more presence in the remote sensing field. Several space-borne, air-borne and ground-based radiometers have ...
Albonda, Haider Daami R. (Fecha de defensa: 2020-07-21)
The thesis focuses on the provision of cellular vehicle-to-everything (V2X) communications, which have attracted great interest for 5G due to the potential of improving traffic safety and enabling new services related to ...
Koutlia, Aikaterini (Fecha de defensa: 2016-05-18)
The new era of mobile communications is dictated by the user demand for robust and high speed connections, data hungry applications and seamless connectivity. Operators and researchers all over the world are challenged to ...
Datsika, Eftychia (Fecha de defensa: 2018-11-26)
As numerous mobile applications and over-the-top (OTT) services emerge and mobile Internet connectivity becomes ubiquitous, the provision of high quality of service (QoS) is more challenging for mobile network operators ...
Gregoratti, David (Fecha de defensa: 2010-06-22)
En la última década, la cooperación entre usuarios ha generado un gran interés por la posibilidad de mejorar la velocidad de transmisión en las redes de comunicaciones inalámbricas. El objetivo es formar un array con las ...
Ghasemi, Saeed (Fecha de defensa: 2019-10-31)
Nowadays, optical access networks provide high capacity to end users with growing availability of multimedia contents that can be streamed to fixed or mobile devices. In this regard, one of the most flexible and low-cost ...
Gilasgar, Mitra (Fecha de defensa: 2017-09-08)
The increasing demand for wireless products to be part of our daily lives brings the need for longer battery lifetime, smaller size and lower cost. To increase battery lifetime, high efficiency power amplifiers (PAs) are ...
Rodrigo López, Daniel (Fecha de defensa: 2013-06-14)
The explosive growth of wireless communications has brought new requirements in terms of compactness, mobility and multi-functionality that pushes antenna research. In this context, recon gurable antennas have gained a lot ...
Sales Zaragozá, Vicente (Fecha de defensa: 2017-10-25)
A new passive optical network (PON) for access, making use of ultra-dense wavelength division multiplexing (UDWDM) by densely spacing channels by a few gigahertz and introducing the "wavelength-to-the-user" concept, is ...
Vilaplana Besler, Verónica (Fecha de defensa: 2010-12-17)
One of the central problems in computer vision is the automatic recognition of object classes. In particular, the detection of the class of human faces is a problem that generates special interest due to the large number ...
Varas González, David (Fecha de defensa: 2016-11-14)
In this thesis, we exploit the hierarchical information associated with images to tackle two fundamental problems of computer vision: video object segmentation and video segmentation. In the first part of the thesis, we ...
Agustín de Dios, Adrián (Fecha de defensa: 2008-01-01)
La transmisión asistida por relay o transmisión cooperativa es una nueva técnica de diversidad espacial donde aparece un elemento nuevo (un relay o un usuario cooperativo) en la tradicional transmisión punto a punto (fuente ...
Silva, Marcos Paulo Aráujo da (Fecha de defensa: 2023-06-29)
(English) Monitoring the atmospheric boundary layer (ABL) is a matter of interest for many applications, such as weather forecasting, pollutant-dispersion models and wind energy. The ABL is the most turbulent part of the ...