Departament de Teoria del Senyal i Comunicacions
Recent Submissions
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Transmission impairments mitigation in next generation coherent optical access networks
(Universitat Politècnica de Catalunya, 2021-09-08)
Doctoral thesis
Open AccessWorldwide, the coherent technologies have revolutionized the optical communication systems, significantly increasing the capacity of the fiber channel owing to transmission of advanced modulation formats and effective ... -
Machine learning assisted QoT estimation for optical networks optimization
(Universitat Politècnica de Catalunya, 2021-09-28)
Doctoral thesis
Open AccessThe 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 ... -
Development of novel instruments and techniques for passive microwave remote sensing
(Universitat Politècnica de Catalunya, 2021-06-17)
Doctoral thesis
Open AccessEarth Observation using satellites has helped to better model our planet. The goal of such systems is to provide large data sets to help to understand the effects of our actions on the climate, to predict storms in near ... -
Wireless sensors embedded in high permittivity lossy media
(Universitat Politècnica de Catalunya, 2021-06-29)
Doctoral thesis
Open AccessThe design of wireless sensors for operation embedded in a medium with high losses creates a series of additional constraints that should be taken into consideration at design stage to enhance sensor performance. In such ... -
Sports broadcasting and multiple object tracking with deep learning methods
(Universitat Politècnica de Catalunya, 2021-03-17)
Doctoral thesis
Open AccessSince less than a decade ago, deep learning techniques started to dominate many different fields, revolutionizing the possibilities of artificial intelligence. Seeing their potential, industrial sectors started to invest ... -
Nonlinear analysis of electro-acoustic frequency-selective devices for communications
(Universitat Politècnica de Catalunya, 2021-03-09)
Doctoral thesis
Open AccessNowadays, mobile devices have become a key technology in our lives, making us become part of a connected world, in which millions of mobile handsets are sold every year. In order to satisfy the user demands, many mobile ... -
Synthesis of acoustic wave filters : ladder and transversal topologies : towards a practical implementation
(Universitat Politècnica de Catalunya, 2021-02-05)
Doctoral thesis
Open AccessThe meteoric growth of the mobile communication market for the last three decades has been strongly related with the evolution of the electroacoustic (EA) filter technology. With way over 5 billion cell phone users worldwide ... -
Matrix completion with prior information in reproducing kernel Hilbert spaces
(Universitat Politècnica de Catalunya, 2021-02-11)
Doctoral thesis
Open AccessIn 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 ... -
Self-supervised deep learning approaches to speaker recognition
(Universitat Politècnica de Catalunya, 2021-01-11)
Doctoral thesis
Open AccessIn speaker recognition, i-vectors have been the state-of-the-art unsupervised technique over the last few years, whereas x-vectors is becoming the state-of-the-art supervised technique, these days. Recent advances in Deep ... -
Injection of linguistic knowledge into neural text generation models
(Universitat Politècnica de Catalunya, 2020-12-14)
Doctoral thesis
Open AccessLanguage is an organic construct. It emanates from the need for communication and changes through time, influenced by multiple factors. The resulting language structures are a mix of regular syntactic and morphological ... -
From hypothesis testing of quantum channels to secret sharing
(Universitat Politècnica de Catalunya, 2020-12-14)
Doctoral thesis
Open AccessThe present thesis has three major thrusts: the first thrust presents a broad investigation of asymptotic binary hypothesis testing, when each hypothesis represents asymptotically many independent instances of a quantum ... -
Design and performance analysis of advanced GNSS-R instruments back-end
(Universitat Politècnica de Catalunya, 2020-12-21)
Doctoral thesis
Open AccessGNSS reflectometry (GNSS-R) is a set of techniques that uses the reflected GNSS signals over the Earth’s surface as opportunity signals for remote sensing applications. In 1993, the European Space Agency (ESA) suggested ...
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