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Programa de Doctorat en Teoria del Senyal i Comunicacions: Recent submissions

Now showing items 81-100 of 338

    GNSS Signal processing and spatial diversity exploitation 

    García Molina, José Antonio (Date of defense: 2020-02-14)

    Global Navigation Satellite Systems (GNSS) signals are broadly used for positioning, navigation and timing (PNT) in many different applications and use cases, Athough different PNT technologies are available, GNSS is ...

    Efficient, end-to-end and self-supervised methods for speech processing and generation 

    Pascual De La Puente, Santiago (Date of defense: 2020-01-31)

    Deep learning has affected the speech processing and generation fields in many directions. First, end-to-end architectures allow the direct injection and synthesis of waveform samples. Secondly, the exploration of efficient ...

    Real-time digital signal processing for new wavelength-to-the-user optical access networks 

    Ghasemi, Saeed (Date of defense: 2019-10-31)

    Nowadays, optical access networks provide high capacity to end users with growing availability of multimedia contents that can be streamed to fixed or mobile devices. In this regard, one of the most flexible and low-cost ...

    Contribution to dimensionality reduction of digital predistorter behavioral models for RF power amplifier linearization 

    Pham, Thi Quynh Anh (Date of defense: 2019-12-18)

    The power efficiency and linearity of radio frequency (RF) power amplifiers (PAs) are critical in wireless communication systems. The main scope of PA designers is to build the RF PAs capable to maintain high efficiency ...

    Cognition procedures for optical network design and optimization 

    Notivol Calleja, Luis David (Date of defense: 2019-12-09)

    Telecom carriers have to adapt their networks to accommodate a growing volume of users, services and traffic. Thus, they have to search a continuous maximization of efficiency and reduction in costs. This thesis identifies ...

    Advanced pixel selection and optimization algorithms for Persistent Scatterer Interferometry (PSI) 

    Zhao, Feng, 1992- (Date of defense: 2019-07-26)

    Ground deformation measurements can provide valuable information for minimization of associated loss and damage caused by natural and environmental hazards. As a kind of remote sensing technique, Persistent Scatterer ...

    Atmospheric artifacts correction for InSAR using empirical model and numerical weather prediction models 

    Hu, Zhongbo (Date of defense: 2019-12-19)

    lnSAR has been proved its unprecedented ability and merits of monitoring ground deformation on large scale with centimeter to millimeter scale accuracy. However, several factors affect the reliability and accuracy of its ...

    Study of early stages of Alzheimer's disease using magnetic resonance imaging 

    Casamitjana Díaz, Adrià (Date of defense: 2019-12-20)

    Alzheimer's disease (AD) is a neurodegenerative disorder that constitutes the most common dementia pathology. It represents a global epidemic that expands exponentially as the life expectancy increases with no yet useful ...

    Nuevo método de detección espectral para sistemas multiportadoras basado en la radio cognitiva 

    Rojas Hernández, Miguel Ángel (Date of defense: 2019-11-20)

    Nowadays, the growing demand for frequency-free bands for new emerging wireless technologies and fixed frequency allocation policies in the use of the radio spectrum have resulted in a saturation of the radio frequency ...

    Integrated IT and SDN Orchestration of multi-domain multi-layer transport networks 

    Mayoral López de Lerma, Arturo (Date of defense: 2019-07-25)

    Telecom operators networks' management and control remains partitioned by technology, equipment supplier and networking layer. In some segments, the network operations are highly costly due to the need of the individual, ...

    Millimeter wave band reconfigurable circuits (from 30 to above 100 GHz) in BiCMOS-MEMS technology 

    Heredia Vega, Julio César (Date of defense: 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 ...

    Impulsive noise cancellation and channel estimation in power line communication systems 

    Shrestha, Deep (Date of defense: 2019-09-13)

    Power line communication (PLC) is considered as the most viable enabler of the smart grid. PLC exploits the power line infrastructure for data transmission and provides an economical communication backbone to support the ...

    Advanced adaptive compensation system for free-space optical communications 

    Carrizo, Carlos E. (Date of defense: 2019-09-20)

    Massive amounts of information are created daily in commercial fields like earth observation, that must be downloaded to earth ground stations in the short time of a satellite pass. Today, much of the collected information ...

    Closed form analysis of Poisson cellular networks: a stochastic geometry approach 

    Aravanis, Alexios (Date of defense: 2019-09-09)

    Ultra dense networks (UDNs) allow for efficient spatial reuse of the spectrum, giving rise to substantial capacity and power gains. In order to exploit those gains, tractable mathematical models need to be derived, allowing ...

    Next generation optical access networks and coexistence with legacy PONs 

    Velásquez Micolta, Juan Camilo (Date of defense: 2019-07-25)

    Nowadays, Fiber-to-the-Home is one of the most promising solutions to provide broadband services in access networks. However, the fiber is inefficiently used as most of the deployed systems are still based on Time Division ...

    Lidar remote sensing and co-operative observations: Processing methods and aerosol radiative transfer 

    Barragán Cuesta, Rubén (Date of defense: 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 ...

    Network virtualization in next generation cellular networks 

    Tseliou, Georgia (Date of defense: 2019-07-17)

    The complexity of operation and management of emerging cellular networks significantly increases, as they evolve to correspond to increasing QoS needs, data rates and diversity of offered services. Thus critical challenges ...

    Doppler wind LIDAR systems data processing and applications : an overview towards developing the new generation of wind remote-sensing sensors for off-shore wind farms 

    Gutiérrez Antuñano, Miguel Ángel (Date of defense: 2019-07-08)

    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 ...

    On the detection of ionospheric waves, relationship with earthquakes and tsunamis 

    Yang, Heng, 1985- (Date of defense: 2019-06-11)

    The research of this thesis addresses the detection and characterization of ionospheric waves and its application to traveling ionospheric disturbances (TIDs) induced by the natural events, such as earthquakes and tsunamis. ...

    Advanced discontinuous integral-equation schemes for the versatile electromagnetic analysis of complex structures 

    Sekulic, Ivan (Date of defense: 2019-06-13)

    Les Equacions Integrals superficials més importants són l'Equació de Camp Elèctric (EFIE), per a l'anàlisi de la dispersió electromagnètica d'objectes conductors perfectes (PEC), i la formulació Poggio–Miller–Chang–Harr ...