Universitat Politècnica de Catalunya
Now showing items 250-269 of 346
Precise phase synchronization of clock or local oscillator signals over distributed systems is a recurring requirement in the design of a wide range of systems, with applications in telecommunications and, for example, in ...
It would be unaffordable if the WDM-PON technologies were directly applied for massive deployment. Hence, the potential WDM-PON is to be integrated and improved in order to adapt it for NGPON and the future 5G. The UDWDM-PON ...
In the next era of communications, where heterogeneous, asynchronous and ultra-low latency networks are drawn on the horizon, classical cryptography might be inadequate due to the excessive cost of maintaining a public-key ...
Las técnicas de Interferometría Diferencial se basan en la combinación de varias imágenes SAR con distinta separación temporal y permiten la recuperación de las componentes lineales y no-lineales del proceso de deformación ...
Radiocommunication systems have evolved significantly in recent years in order to meet present and future demands. Historically, time, frequency and more recently, spatial dimensions have been used to improve capacity and ...
In the recent years, a wide interest has been focused on research and development for the operational use of satellite remote sensing tools for Earth observation. Among different types of sensors, Synthetic Aperture Radars ...
The smart grid (SG) is the enhancement of the traditional electricity grid that allows bidirectional flow of electricity and information through the integration of advanced monitoring, communication and control technologies. ...
La investigación de los materiales constitutivos de obras de arte, en la que se encuadra esta tesis, es una de las aplicaciones de la espectroscopía Raman que ha ido creciendo en importancia en las últimas décadas. El ...
The dynamic behavior of the traffic demand, due to the advent of technologies such as cloud services or Internet of Things (IoT), is increasing. In fact, heterogeneous connections with different characteristics (bandwidth ...
The growing need for wireless connectivity is pushing the massive adoption and usage of Wireless Local Area Networks (WLANs) based on the IEEE 802.11 standard (Wi-Fi), leading to dense deployments of individual, uncoordinated ...
Les expectatives dels usuaris en relació a la quantitat i qualitat del serveis de xarxa estan creixent ràpidament. En canvi, desenvolupar e implantar nous serveis de xarxa (serveis que operen a nivell de xarxa) seguint el ...
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 ...
(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 ...
(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 ...
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 ...
(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 ...
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 ...
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 ...
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 ...
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 ...
