Mostrando ítems 180-199 de 346
Fernández Cañellas, Dèlia (Fecha de defensa: 2023-10-09)
(English) Media producers publish large amounts of multimedia content online - both text, audio, image and video. As the online media market grows, the management and delivery of contents becomes a challenge. Semantic ...
Schulz, Henrik (Fecha de defensa: 2017-03-02)
The transcription of spontaneous speech still poses a challenge to state-of-the-art methods for automatic speech recognition. The present thesis describes the comprehensive development of a large vocabulary continuous ...
Escolano Peinado, Carlos (Fecha de defensa: 2022-03-18)
This thesis aims to study different language-specific approaches for Multilingual Machine Translation without parameter sharing and their properties compared to the current state-of-the-art based on parameter-sharing. We ...
Pujol Miró, Alba (Fecha de defensa: 2020-09-18)
The ability to capture depth information form an scene has greatly increased in the recent years. 3D sensors, traditionally high cost and low resolution sensors, are being democratized and 3D scans of indoor and outdoor ...
Lange Vega, Diego (Fecha de defensa: 2014-07-17)
This Ph.D. thesis addresses remote sensing of the atmosphere by means of lidar and S-band clear-air weather radar, and related data signal processing. Active remote sensing by means of these instruments offers unprecedented ...
Barragán Cuesta, Rubén (Fecha de defensa: 2019-07-05)
This Ph.D. thesis focuses on: (i) the design and integration of a polarimetric channel for the multi-spectral Raman lidar station of the Universitat Politècnica de Catalunya (UPC), Remote Sensing, Antennas, Microwaves and ...
Rocadenbosch Burillo, Francesc (Fecha de defensa: 1996-12-16)
LIDAR es un acrónimo de LIght Detection And Ranging. En la presente tesis, se usan técnicas basadas en lidar elástico para monitorizar la atmósfera remotamente y derivar información cuantitativa acerca de sus parámetros ...
Rezazadeh, Farhad (Fecha de defensa: 2023-11-13)
(English) The sixth-generation (6G) network's evolution necessitates advancements in algorithms and architecture to transition from an AI-native to an intrinsic trustworthy automation-native system. Network slicing creates ...
Serra Pagès, Albert (Fecha de defensa: 2016-02-05)
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 ...
Ibrahim Mohamed Badr, Asmaa (Fecha de defensa: 2023-07-18)
(English) Throughout this thesis we addressed 5G network challenges. The non-coherent optical modulation tradeoff has been addressed, as we proposed FBMC and artificial intelligence-based schemes. The proposed schemes ...
Mahajan, Ankush (Fecha de defensa: 2021-09-28)
The tremendous increase in data traffic has spurred a rapid evolution of the optical networks for a reliable, affordable, cost effective and scalable network infrastructure. To meet some of these requirements, network ...
López Bueno, David (Fecha de defensa: 2023-07-07)
(English) The power amplifier (PA) is a core element in the radio transmitters to support the required mobile and fixed broadband communication link ranges. However, the PA is a power-hungry and nonlinear by nature device. ...
Margarit Martín, Gerard (Fecha de defensa: 2007-07-11)
Els oceans mantenen una fràgil i complexa cadena que enllaça un alt nombre de factors biològics, sociològics i econòmics. Actualment, aquest ecosistema està amenaçat per l'activitat humana i uns dels punts més crítics és ...
Giménez Febrer, Pere Joan (Fecha de defensa: 2021-02-11)
In matrix completion, the objective is to recover an unknown matrix from a small subset of observed entries. Most successful methods for recovering the unknown entries are based on the assumption that the unknown full ...
Obrador Espinosa, Pere (Fecha de defensa: 2011-07-08)
Since the earliest of times, humans have been interested in recording their life experiences, for future reference and for storytelling purposes. This task of recording experiences --i.e., both image and video capture-- ...
Maya Sánchez, María del Carmen (Fecha de defensa: 2003-12-15)
En esta Tesis se utiliza una técnica de fuente adaptada para medir los parámetros de ruido de transistores de efecto campo, como MESFET y HEMT. Para ello, se ha implementado un sistema de medida en el margen de frecuencias ...
Kalfas, Georgios (Fecha de defensa: 2017-05-12)
In order to address the explosive demand for high-capacity and omnipresent wireless access, modern cell-based wireless networks are slowly adopting two major solution roadmaps. The first is the employment of small-cell ...
Mallorquí, Jordi J. (Jordi Joan) (Fecha de defensa: 1995-05-02)
El objetivo básico de la tesis ha sido el desarrollo de algoritmos de reconstrucción que permiten obtener imágenes de cuerpos biológicos de alto contraste. Los datos de entrada de los distintos algoritmos son los campos ...
Jaimes Vera, Edith Aline (Fecha de defensa: 2012-03-16)
La región de microondas en el espectro electromagnético tiene propiedades únicas que le permiten a las señales propagarse a través de la atmósfera bajo casi cualquier condición climática, ésta es la razón por la cual los ...
Heredia Vega, Julio César (Fecha de defensa: 2019-09-27)
Actualment hi ha un ús creixent de dispositius mòbils i de la necessitat d’informació i, per això, cada vegada es necessiten sistemes sense fils amb majors velocitats de dades i més amplada de banda. A més, els sistemes ...