Programa de Doctorat en Teoria del Senyal i Comunicacions: Enviaments recents
Ara mostrant els elements 1-20 de 359
The DCT as the basis for nonlinear signal processing and task-oriented communications
(English) This dissertation addresses two fundamental and increasingly connected challenges in modern information processing: nonlinear learning and task-oriented communications. Both fields require compact, interpretable ...
Development of innovative land applications for ESA's HydroGNSS mission
(English) The research presented in this paper-based dissertation focuses on the development of products for the ESA HydroGNSS mission, including the Level 2 surface inundation algorithm, the exploitation of the coherent ...
Radar-based techniques for continuous monitoring of soil moisture and vegetation using time series analysis
(English) Ongoing changes in climate and weather patterns have emphasized the need for improved observation and understanding of rapid land–atmosphere interactions, particularly those related to the water cycle. This thesis ...
AI-driven multi-antenna designs for next generations of wireless communication systems
(English) As wireless networks evolve toward sixth-generation (6G) systems, the integration of advanced technologies like massive MIMO, millimeter-wave communication, intelligent reflecting surfaces, and massive multiple ...
Synergy between ground-based remote-sensing instruments for retrieving microphysical-optical-radiative properties of atmospheric aerosols
(English) The improvements in retrieving microphysical, optical, and radiative properties of aerosols can contribute to more detailed local observations and research, support local or global climate modeling and air quality ...
Magnetohydrodynamics enhanced radio blackout mitigation system for spacecraft during planetary entries
(English) Spacecraft entering planetary atmospheres are enveloped by a plasma layer with high levels of ionization, caused by the extreme temperatures in the shock layer. The charged particles in the plasma interact with ...
Neural network-based data processing for satellite imagery in small satellite earth observation missions
(English) The increasing availability and miniaturization of satellite sensors have enabled CubeSats to emerge as powerful platforms for Earth Observation (EO). Despite their reduced size and low cost, CubeSats can provide ...
Surface impedance characterization of high-temperature superconducting coated conductors for potential application in the future circular collider beam screen
(English) The Future Circular Hadron Collider (FCC-hh) is a proposed hadron-hadron collider, with a center-of-mass collision energy of 100 TeV in an approximately 100-km long circular tunnel, aiming to push the frontiers ...
Algorithms for high performance computing applied to simulation of ensembles of nanoparticles
(English) The objective of this thesis is to increase the computational efficiency of integral equation based methods for solving the electromagnetic scattering problem by incorporating random computations. Randomization ...
Development of accelerated fully focused SAR altimetry algorithms
(English) The capability to measure ocean surface topography from space emerged in the 1970s with satellite radar altimeters. Since then, it has become essential in Earth observation, supporting a range of applications, ...
Simple coherent technologies for next-generation edge optical networks
(English) Optical fiber communications have revolutionized the telecommunications networks in all segments, leveraging a wide set of advantages ranging from THz capacity to low-loss, security and form factor. In long-haul ...
From pixels to graphs: cell-based digital pathology image analysis
(English) Histopathology is the gold standard for cancer diagnosis, where pathologists examine tissue samples to assess cellular morphology, tissue architecture, and biomarker expression. The digitization of histological ...
Contextual speech recognition
(English) Although Automatic Speech Recognition (ASR) technology has achieved remarkable improvements in transcription accuracy in recent years, it still struggles to correctly transcribe certain words. In particular, ...
Instance-level recognition for image understanding
(English) Image understanding is a fundamental task in computer vision as it aims to enable machines to visually comprehend the real world. In this thesis, the task of image understanding is addressed through the combination ...
New methods for radio frequency interference mitigation in microwave radiometry
(English) Radio Frequency Interference (RFI) has emerged as the most critical challenge to the effective exploitation of the microwave spectrum for Earth observation. RFI consists of non-natural emissions that obscure the ...
Ground-based GEOSAR system using DVB-S/S2 signals of opportunity and FPGA based correlators
(English) The SAR satellite missions from Geostationary Orbits (GEOSAR) offer short revisit times of less than 24 hours, which are essential for monitoring fast-evolving phenomena. A first mission has recently been launched ...
Contextualization of spatio-temporal action localization systems and media content applications
(English) Spatio-temporal action localization is a field of computer vision that determines both the spatial and temporal locations of actions taking place within a video. This particular task is one of the cornerstones ...
Qualitative algorithm for microwave colonoscopy
(English) This thesis develops and validates an innovative algorithm for colorectal cancer (CRC) detection using microwaves, integrating it into endoscopic procedures. Validation includes ex-vivo, in-vivo, and clinical ...
Ionospheric scintillation in GNSS signals: a tool for earth observation
(English) This PhD thesis is intended to study ionospheric scintillation and its relationship with some of its sources, in particular the observed correlation between the ionospheric perturbation and the lithosphere. ...
Contributions to RFI detection, mitigation, and excision for GNSS receivers and spaceborne microwave radiometers
(English) Radio Frequency Interference (RFI) poses significant challenges to remote sensing systems, particularly affecting Global Navigation Satellite System-Reflectometry (GNSS-R) and microwave radiometry. This thesis ...
