Departament de Teoria del Senyal i Comunicacions: Enviaments recents
Ara mostrant els elements 141-160 de 355
Nuevas técnicas diagnósticas de las enfermedades respiratorias : análisis de imagen
In the present thesis 3 detailed studies were carried out that spring from 3 different diagnostic techniques that include bronoscopy, tuberculine bacillus infection diagnosis, and the control of oxygen therapy in chronic ...
Texture analysis and physical interpretation of polarimetric SAR data
This thesis is dedicated to the study of texture analysis and physical interpretation of PolSAR data. As the starting point, a complete survey of the statistical models for PolSAR data is conducted. All the models are ...
Atmospheric-boundary-layer height retrieval using microwave radiometer and lidar sensors : algorithms and error estimation
The Atmospheric Boundary Layer Height (ABLH) is an important parameter in weather forecasting, meteorology, avionics, and air-quality and dispersion models. Local development of the Atmospheric Boundary Layer (ABL) over ...
Resource management techniques for sustainable networks with energy harvesting nodes
his dissertation proposes novel techniques for assigning resources of wireless networks by considering that the coverage radii are small, implying that some power consumption sinks not considered so far shouldnow be ...
Radio resource management strategies for interference mitigation in 4G heterogeneous wireless networks
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 ...
Do-it-yourself instruments and data processing methods for developing marine citizen observatories
Water is the most important resource for living on planet Earth, covering more than 70% of its surface. The oceans represent more than 97% of the planet total water and they are where more than the 99.5% of the living ...
Transmission strategies for interfering networks with finite rate and outdated channel feedback
The emergence of very capable mobile terminals, e.g. smartphones or tablets, has dramatically increased the demand of wireless data traffic in recent years. Current growth forecasts elucidate that wireless communication ...
Link level performance evaluation and link abstraction for LTE/LTE-advanced downlink
Els objectius principals d'aquesta tesis són l'avaluació del rendiment a nivell d'enllaç i l'estudi de l'abstracció de l'enllaç pel LTE/LTE-Advanced DL. S’ha desenvolupat un simulador del nivell d'enllaç E-UTRA DL basat ...
High-resolution space-borne and ground-based SAR persistent scatterer interferometry for landslide monitoring
Every year, with the onset of spring rains and snow melting, landslides represent one of the major threats to human life and infrastructures in natural environments. In this context, different surveying techniques, such ...
Optimization of positioning capabilities in wireless sensor networks : from power efficiency to medium access
In Wireless Sensor Networks (WSN), the ability of sensor nodes to know its position is an enabler for a wide variety of applications for monitoring, control, and automation. Often, sensor data is meaningful only if its ...
Photonic devices for next generation fiber-to-the-home access network
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 ...
Design of energy efficient network planning schemes for LTE-based cellular networks
The rapid expansion of mobile services and the emerging demand for multimedia applications have led to an impressive traffic growth. To this end, Mobile Network Operators (MNOs) seek to extend their infrastructure by ...
Graph-based techniques for compression and reconstruction of sparse sources
The main goal of this thesis is to develop lossless compression schemes for analog and binary sources. All the considered compression schemes have as common feature that the encoder can be represented by a graph, so they ...
Advanced optical technologies for phytoplankton discrimination : application in adaptive ocean sampling networks
There is a lack on ocean dynamics understanding, and that lead oceanographers to the need of acquiring more reliable data to study ocean characteristics. Oceanographic measurements are difficult and expensive but essential ...
Next generation multibeam satellite systems
Satellite communication will play a central role towards fulfilling next generation 5G communication requirements. As a matter of fact, anytime-anywhere connectivity cannot be conceived without the presence of the satellite ...
Next generation passive optical networks based on orthogonal frequency division multiplexing techniques
In recent decades, the industry of communications has acquired huge significance, and nowadays constitutes an essential tool for the society information. Thus, the exponential growth in demand of broadband services and ...
Synthesis and design of dissipative filters with improved performance
Connect, upload, download, share and transfer anything at anytime and anywhere is not a futuristic vision and is indeed a real demand on current and future wireless and fixed communication systems. From the point of view ...
Exploiting spatial modulation and analog network coding for the design of energy-efficient wireless networks
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 ...
Exploiting cognition for energy and spectrum efficient wireless networks
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 ...
Dispositivos de medición de frecuencia reconfigurables = Reconfigurable frequency measurement devices
This thesis presents reconfigurable microwave discriminators used for the development of reconfigurable measurement circuits with high miniaturization, low power consumption, reduced weight and cost. The concept is ...
