Browsing by Subject "Fibres òptiques"
Now showing items 1-20 of 259
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1.25-3.125 Gb/s per user PON with RSOA as phase modulator for statistical wavelength ONU
(2015-12-15)
Article
Open AccessWe report a new scheme to support, cost efficiently, ultra-dense wavelength division multiplexing (UDWDM) for optical access networks. As validating experiment, we apply phase modulation of a reflective semiconductor optical ... -
1.3 µm SDN-enabled optical packet switch architecture for high performance and programmable data center network
(Institute of Electrical and Electronics Engineers (IEEE), 2015)
Conference report
Restricted access - publisher's policyWe demonstrate a 1.3 µm port-count scalable SDN-enabled optical packet switch architecture for programmable data-center networks. Experimental assessments of a 40Gb/s 4×4 switch system with SDN-control show <10-5 packet-loss ... -
15-dB differential link-loss UDWDM-PON with direct beat phase modulated DFBs
(2017-11-21)
Article
Open AccessIEEE A 15 dB differential link-loss ultra-dense wavelength division multiplexing passive optical network (UDWDM-PON) with two optical network units (ONU) spectrally spaced 6.25 GHz is experimentally implemented and tested. ... -
5G connected vehicles supported by optical fiber access
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policyFuture autonomous vehicle will require a high level of computation, communication, sensing and fast response actuation. Communication among vehicles, and vehicles to infrastructure, accessing to remote systems and services ... -
A column generation approach for large-scale RSA-based network planning
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyIn flexgrid-based optical networks, the problem of finding optimal route and spectrum allocation (RSA) for the demands in a traffic matrix becomes harder to solve than similar problems in fixed DWDM networks, mainly due ... -
A discrete bit loading algorithm for FBMC/OQAM
(2012-06)
Article
Restricted access - publisher's policyIn this letter the discrete rate maximization problem is investigated for FBMC/OQAM. The analysis reveals that if there is crosstalk certain bit allocations violate the power constraints. Aiming at ensuring the feasibility ... -
A frequency approach on MIMO DSP for optical communication systems
(Universitat Politècnica de Catalunya, 2013-02-28)
Master thesis (pre-Bologna period)
Open Access[ANGLÈS] Spatial Division Multiplexing (SDM) has arisen during the last years as the most promising technique to overcome the increasing necessity of capacity of the communication systems while avoiding the theoretical ... -
A multi-tenancy model based on resource capabilities and ownership for infrastructure management
(Institute of Electrical and Electronics Engineers (IEEE), 2012)
Conference report
Restricted access - publisher's policyThis paper presents a multi-tenancy model based on infrastructure resource capability virtualisation. The model, namely Resources, Ownership, Roles and Actors or RORA, approaches network and IT infrastructure virtualisation ... -
A novel distributed fiber-optic strain sensor
(2002-08)
Article
Restricted access - publisher's policyThe theory of operation of a fiber-optic-based strain sensor system, suitable for long structures, is described. The proposed sensor design is composed of several hundreds of sections separated by reflectors in order to ... -
A simple strategy to improve spectrum use in multi-rate flexgrid optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyA simple overprovisioning Spectrum Assignment strategy for flexgrid networks is demonstrated as efficient in terms of network throughput at a given blocking probability. Gain is obtained despite allocated spectrum exceeds ... -
A traffic intensity model for flexgrid optical network planning under dynamic traffic operation
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Conference report
Restricted access - publisher's policyWe obtain a model to estimate the highest traffic intensity that a flexgrid-based network can support in dynamic scenarios. A design problem is introduced to illustrate its application. Numerical results validate both ... -
Acotación de la probabilidad de error en un sistema de transmisión digital por fibra óptica
(1980)
Conference report
Open AccessDans ce papier, on a obtenu des bornes inférieure et supérieure de la probabilité d 'erreur par symbole dans un systemè de transmission numérique par Fibre Optique. Pour celà, nous avons employé une simplification de la ... -
Acotación rápida de la probabilidad de error en un sistema de transmisión digital por fibra óptica con símbolos no correlados
(Unión Científica Internacional de Radio (URSI), 1983)
Conference report
Open AccessThis paper deals with the problem of determinig an upper bound on the average conditional error probabilities in a digital optical fiber communication system with non-correlated symbols, in the presence of additive noise ... -
Adaptation of the residual signal for filter failure detection in scenarios with multiple filter types
(2019)
Conference report
Open AccessTo monitor the optical spectra of outgoing links, Optical Spectrum Analyzers (OSA) can deployed in the optical nodes acquiring the optical spectra of outgoing links and analyzing optical signals to detect ... -
Adaptive and iterative QoT estimator retraining for launch power optimization
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Conference report
Open AccessWe dynamically optimize the transponders launch powers with iterative closed control loops. We close the loop after an adaptable number of algorithm’s intermediate calculations, to monitor and retrain the QoT estimator ... -
After failure repair optimization in dynamic flexgrid optical networks
(The Optical Society (OSA), 2014)
Conference report
Restricted access - publisher's policyWe introduce the problem of reoptimizing the network after a link failure has been repaired as an effective way for reducing capacity usage and improving network performance. Numerical results show gains higher than 42%. -
All-optical communication system based on orthogonal frequency-division multiplexing (OFDM) and optical time-division multiplexing (OTDM)
(Universitat Politècnica de Catalunya, 2014-05-13)
Master thesis (pre-Bologna period)
Open Access
Covenantee: Danmarks tekniske universitet[ANGLÈS] We propose and demonstrate a novel principle that combines optical orthogonal frequency-division multiplexing (O-OFDM) and optical time-division multiplexing (OTDM). The principle is based on generating and ... -
All-optical soliton control in photonic lattices
(Universitat Politècnica de Catalunya, 2007-11-27)
Doctoral thesis
Open AccessLos solitones ópticos son paquetes de luz (haces y/o pulsos) que no se dispersan gracias al balance entre difracción/dispersión y no linealidad. Al propagarse e interactuar los unos con los otros muestran propiedades que ... -
Allocating multi-rate requests to single-rate lightpaths in Flexgrid optical networks
(Institute of Electrical and Electronics Engineers (IEEE), 2018)
Conference report
Restricted access - publisher's policySome ideas about the effect of appropriately selecting the size of the connections conveyed by multi-rate flexgrid optical networks are discussed. The main focus is on illustrating the relation between spectrum consumption ... -
Ampliació i millora de la infraestructura de la xarxa de comunicacions de dades de Lloret de Mar
(Universitat Politècnica de Catalunya, 2011-06-15)
Master thesis (pre-Bologna period)
Restricted access - author's decisionEl projecte que es desenvolupa a continuació, té com a objectiu l’ampliació i millora de la xarxa de comunicacions de dades de Lloret de Mar. Aquesta ampliació es basarà en la instal·lació d’un segment de fibra ...
