Browsing by Contributor "Prat Gomà, Josep Joan"
Now showing items 21-35 of 35
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Next generation optical access networks and coexistence with legacy PONs
(Universitat Politècnica de Catalunya, 2019-07-25)
Doctoral thesis
Open AccessNowadays, 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 ... -
Photonic devices for next generation fiber-to-the-home access network
(Universitat Politècnica de Catalunya, 2016-02-22)
Doctoral thesis
Open AccessIt 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 ... -
Platform to control and monitor a microcontroller remotely
(Universitat Politècnica de Catalunya, 2017-06)
Bachelor thesis
Open Access
Covenantee: Hochschule AalenThis project is going to modify a communication between monitoring software and a microcontroller. Currently this communication is carried out physically with a cable. Our goal is to remove this cable and implement a ... -
Real-time digital signal processing for new wavelength-to-the-user optical access networks
(Universitat Politècnica de Catalunya, 2019-10-31)
Doctoral thesis
Open AccessNowadays, 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 ... -
Redes de acceso UDWDM operadas con láseres aleatorios de sintonía limitada
(Universitat Politècnica de Catalunya, 2017-10-25)
Doctoral thesis
Open AccessA new passive optical network (PON) for access, making use of ultra-dense wavelength division multiplexing (UDWDM) by densely spacing channels by a few gigahertz and introducing the "wavelength-to-the-user" concept, is ... -
Regeneración de señales digitales de alta velocidad para paquetes ópticos a ráfagas
(Universitat Politècnica de Catalunya, 2011-05-03)
Master thesis (pre-Bologna period)
Open AccessCatalà: En aquest projecte, es desenvoluparà un sistema novedós pel qual es podrà recuperar la informació de les baixes freqüències a partir de les altes. Gràcies a aquest sistema, es presentaran multitud de possibilitats ... -
Single sideband techniques for next generation low-cost UD-WDM coherent PONs
(Universitat Politècnica de Catalunya, 2021-09-23)
Master thesis
Open AccessIn this thesis, two applications for splitter-based, coherent passive optical networks (PONs) are investigated. Coherent technologies enable ultra-dense wavelength division multiplexing (UD-WDM), increasing the dedicated ... -
Sintonia tèrmica de làsers per a xarxes òptiques udWDM
(Universitat Politècnica de Catalunya, 2014-07-29)
Master thesis (pre-Bologna period)
Restricted access - confidentiality agreement -
Sistema de detecció òptica coherent homodina amb tècniques D.S.P.
(Universitat Politècnica de Catalunya, 2012-06-27)
Master thesis (pre-Bologna period)
Open Access[ANGLÈS] The project presented in this paper is to design a coherent optical receiver homodyne type with signal processing DSP (Digital signal Processing) Optical systems generally fall into IMDD direct detection systems ... -
Sistema de monitorización de redes ópticas de acceso con multiplexación en longitud de onda
(Universitat Politècnica de Catalunya, 2014-07-29)
Master thesis (pre-Bologna period)
Open Access[ANGLÈS] The fiber to the home (FTTH) is already implemented in our cities and new systems are being developed in order to get more profit of the high bandwidth of the fiber. Nowadays, the works have time division multiplexing ... -
Techno-Economic Analysis of ETAPA-EP GPON Network
(Universitat Politècnica de Catalunya, 2015-04-30)
Master thesis
Restricted access - publisher's policy[ANGLÈS] Trend of telecommunications companies worldwide goes toward implementation of FTTH systems, telecommunications companies in Ecuador, CNT-EP (nationally) and ETAPA-EP (locally) have come to deploy GPON networks in ... -
Thermal characterization and stabilization of DFB lasers for access networks
(Universitat Politècnica de Catalunya, 2021-12-09)
Master thesis
Open AccessCurrent optical communication schema are based on TDMA. New schema have been proposed that are based on WDM. A WDM based scheme needs all lasers to be stable at a fixed wavelength. The wavelength of a laser can be modified ... -
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 ... -
Wavelength shifting for ultra-dense homodyne coherent optical access networks
(Universitat Politècnica de Catalunya, 2020-07)
Bachelor thesis
Open AccessIn this work, a splitter based coherent passive optical network (PON) architecture for access over a single fibre is proposed. This PON enables ultra-dense wavelength division multiplexing (ud-WDM) while using a single ... -
WDM/TDM PON bidirectional networks single-fiber/wavelength RSOA-based ONUs layer 1/2 optimization
(Universitat Politècnica de Catalunya, 2013-09-12)
Doctoral thesis
Open AccessThis Thesis proposes the design and the optimization of a hybrid WDM/TDM PON at the L1 (PHY) and L2 (MAC) layers, in terms of minimum deployment cost and enhanced performance for Greenfield NGPON. The particular case of ...
