Now showing items 21-40 of 115

    • Desarrollo sistemas opticos coherentes a 2.5 gb/s 

      Junyent Giralt, Gabriel (1991)
      Conference report
      Open Access
      The paper is concerning to a R&D proj ect to develop Optical Coherent Systems working at 2. 5 Gbitjs data speed and l. 55 um operating wavelength. Three are the main phases in the project plan: the Lab Model system, built ...
    • Design and implementation of a GMPLS-controlled grooming-capable optical transport network 

      Agraz Bujan, Fernando; Velasco Esteban, Luis Domingo; Perelló Muntan, Jordi; Ruiz Ramírez, Marc; Spadaro, Salvatore; Junyent Giralt, Gabriel; Comellas Colomé, Jaume (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-07)
      Article
      Open Access
      Aiming at better resource utilization, an important requirement of future optical transport networks is the capability to accommodate subwavelength client flows efficiently. This can be put into action thanks to the ...
    • Designing national IP/MPLS networks with flexgrid optical technology 

      Velasco Esteban, Luis Domingo; Wright, Paul; Lord, Andrew; Junyent Giralt, Gabriel (2012)
      Conference report
      Open Access
      We propose a two-step procedure to design flexgrid-based national networks. Locations are first partitioned into a set of metro areas interconnected through a flexgrid optical network. Next, each network is designed ...
    • Desplegament de recursos en línea per a l’avaluació i l’autoaprenentage dels alumnes, i foment de l’especialització i competències transversals en el màster MERIT 

      Pradell i Cara, Lluís; Cardama Aznar, Ángel; Canal Bienzobas, Fernando; Jofre Roca, Lluís; Junyent Giralt, Gabriel; Herranz Luis, Jaime; Mallorquí Franquet, Jordi Joan; Nadeu Camprubí, Climent; Pagès Zamora, Alba Maria; Pradell i Cara, Lluís; Rius Casals, Juan Manuel; Rodríguez Fonollosa, Javier; Romeu Robert, Jordi; Coderch Collell, Marcel; Kerans, Mary Ellen; Law, Carolyn; García Hernández, Antonio; Gutiérrez Martos, David; Hernández Bonet, Antoni; Ferrer Bosch, Anna; Pérez Trufero, Javier; Torre Lara, Jordi de la; Torres Matabosch, Núria (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-02-11)
      Conference lecture / Conference report
      Open Access
      El projecte es desenvolupa en el marc de la titulació oficial de màster MERIT del Departament de Teoria del Senyal i Comunicacions. El màster, orientat a la recerca i integrat dins del programa Erasmus Mundus, presenta ...
    • Determinación de la probabilidad de error en sistemas de comunicación digital por fibras ópticas: estudio comparativo de métodos “cuasi-exactos” 

      Casadevall Palacio, Fernando José; Junyent Giralt, Gabriel; Olmos Bonafé, Juan José; Agustí Comes, Ramon (1983)
      Conference report
      Open Access
      En este trabajo se presenta un estudio comparativo de diversos métodos para calcular la probabilidad de error en un sistema de comunicación digital por fibra óptica. Los procedimientos utilizados permiten determinar el ...
    • Digitally processed modulation formats and integrated photonics for flexible optical metro-access networks 

      Lázaro Villa, José Antonio; Schrenk, Bernhard; Malligaraj, M.; Cano Valadéz, Iván Nicolás; Parra, M.; Sridharan, Madanagurusamy; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Conference report
      Restricted access - publisher's policy
      Digitally processed modulations formats such as Nyquist-WDM are investigated for implementation of future flexible optical networks, by using integrated photonic devices and moderate speed optoelectronics. We compare ...
    • Diseño e implementacion central conmutacion optica 

      Junyent Giralt, Gabriel (1991)
      Conference report
      Open Access
      In this work we present an optical switching plan. It has been developed using Multimode Fiberoptic Switches, which use moving fiber technology. This plan can switch audio and video signals between four users.
    • Diseño óptimo del preamplificador de recepción para un sistema de transmisión de datos a alta velocidad por fibra óptica 

      Casadevall Palacio, Fernando José; Junyent Giralt, Gabriel; Agustí Comes, Ramon (1983)
      Conference report
      Open Access
      En esta comunicación se realiza el análisis y el diseño óptimo desde el punto de vista de ruido del amplificador de recepción de un sistema de transmisión de datos a alta velocidad por fibra óptica. Su estructura es la de ...
    • Diseño y realizacion receptor optico mi-dd 2.5 gb/s 

      Cerdà, P.; Roldán Andrade, Jesús; Junyent Giralt, Gabriel (1991)
      Conference report
      Open Access
      A 2.5 Gbit/s MI-DD optical receiver is designed. In order to optimize it, we considerate the noise and the intersimbol interference; hence, a realizable filtre has been studied and developed. A noise parametrization of the ...
    • Dynamic customer virtual network reconfiguration with QoS constraints and bandwidth guarantees 

      Asensio Carmona, Adrian; Ruiz Ramírez, Marc; Contreras Lizarraga, Adrián Arturo; Velasco Esteban, Luis Domingo; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Conference report
      Restricted access - publisher's policy
      An algorithm for Customer Virtual Network (CVN) reconfiguration with QoS constraints and bandwidth guarantees is presented. An MPLS virtual network supporting CVNs is pre-planned or dynamically reconfigured. Exhaustive ...
    • Dynamic restoration in multi-layer IP/MPLS-over-flexgrid networks 

      Castro Casales, Alberto; Velasco Esteban, Luis Domingo; Comellas Colomé, Jaume; Junyent Giralt, Gabriel (2013)
      Conference report
      Restricted access - publisher's policy
      The recent advances in photonic technology will allow deploying flexgrid-based optical core networks in the near future. Although that technology favors more efficient spectrum utilization, multilayer IP/MPLS-over-flexgrid ...
    • Ecualización en banda base para sistemas de transmisión digital por fibra óptica a alta velocidad: estudio comparativo de diferentes criterios de diseño 

      Casadevall Palacio, Fernando José; Junyent Giralt, Gabriel (Unión Científica Internacional de Radio (URSI), 1983)
      Conference report
      Open Access
      For data rates above 100Mb/s, multimode systems are generally modal dispersion rather than loss limited and some form of equalization is highly desired. We have investigated the performance of varius equalizers. Linear ...
    • Efficient spectrum assignment in elastic optical networks 

      Comellas Colomé, Jaume; Calzada Salvia, Xavier; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      The Elastic Optical Network (EON) architecture has been proposed in response to the large capacity and diverse traffic granularity needs of the future Internet. By breaking the fixed-grid spectrum allocation of WDM networks, ...
    • Egalisation no-lineaire en fibre optique a 140 et 560 Mbit/s 

      Junyent Giralt, Gabriel; Agustí Comes, Ramon; Casadevall Palacio, Fernando José (Institute of Electrical and Electronics Engineers (IEEE), 1982)
      Conference report
      Open Access
      Dans cet article, on introduit un égaliseur non-linéaire du type récursif avec décision dans la boucle pour compenser les effets de l'interférence entre symboles qui est présente dans un système de transmission numérique ...
    • Electronic and photonic switching in the atm era 

      Masip, J; Solé Pareta, Josep; Junyent Giralt, Gabriel (1998-09)
      Article
      Open Access
      Broadband networks require high-capacity switches in order to properly manage large amounts of traffic fluxes. Electronic and photonic technologies are being used to achieve this objective both allowing different multiplexing ...
    • Enhanced domain disjoint backward recursive TE path computation for PCE-based multi-domain networks 

      Hernández Sola, Guillem; Perelló Muntan, Jordi; Agraz Bujan, Fernando; Velasco Esteban, Luis Domingo; Spadaro, Salvatore; Junyent Giralt, Gabriel (2011-04)
      Article
      Restricted access - publisher's policy
      The ability of computing optimal routes poses new challenges when extending it to larger multi-domain network scenarios, as the quality of these computed endto-end inter-domain routes depends on the selection of the domain ...
    • Evaluación de las prestaciones de un receptor óptico coherente incluyendo ruido AM y FM 

      Ruiz Boqué, Sílvia; Junyent Giralt, Gabriel (Universidad Politécnica de Madrid (UPM), 1988)
      Conference report
      Open Access
      In this paper an evaluation of the performance of a coherent optical receiver for binary PSK has been carried out by means of the signal to noise ratio and BER calculation. Both the AM and FM noise due to transmitter and ...
    • Examen Final 

      Gené Bernaus, Joan M.; Junyent Giralt, Gabriel (Universitat Politècnica de Catalunya, 2015-01-14)
      Exam
      Restricted access to the UPC academic community
    • Examen Final 

      Junyent Giralt, Gabriel; Gené Bernaus, Joan M. (Universitat Politècnica de Catalunya, 2014-01-09)
      Exam
      Restricted access to the UPC academic community
    • Examen Final 

      Gené Bernaus, Joan M.; Junyent Giralt, Gabriel (Universitat Politècnica de Catalunya, 2015-06-19)
      Exam
      Restricted access to the UPC academic community