Ara es mostren els items 90-109 de 115

    • Quantifying bypass traffic in partially meshed transparent optical networks 

      Comellas Colomé, Jaume; Hario, Fakhriy; Junyent Giralt, Gabriel (Springer Nature, 2023-06-28)
      Article
      Accés obert
      This work investigates the transparent bypassing capacity requirements of elastic backbone optical networks to determine the all-optical cross-connection capacity needed at network nodes. Topological parameters have been ...
    • Quantifying dynamic traffic in elastic optical networks 

      Comellas Colomé, Jaume; Vicario, L.; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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      This work is focused on the characterization of the traffic allocated in Elastic Optical backbone networks when different dynamic traffic profiles are generated. Extensive simulations are done to statistically model the ...
    • Quantitative analysis of dynamic dedicated path protection in Elastic Optical Networks 

      Comellas Colomé, Jaume; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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      A simple scheme to implement dedicated path protection in Elastic Optical Networks is proposed and evaluated under dynamic traffic conditions. It consists in splitting the spectrum available in the network links in two ...
    • Receptor optico coherente (pfsk a 2.5 gb/s) 

      Prat Gomà, Josep Joan; Roldán Andrade, Jesús; Junyent Giralt, Gabriel (1991)
      Text en actes de congrés
      Accés obert
      This paper concers the design and present results of a CPFSK optical receiver for a 2.5 Gbit/s coherent system operating at 1.55 ¡.¡m. The received CPFSK modulated signal is converted into the electrical domain by means ...
    • Receptor óptico para PSK homodino con estrcutra de PLL con decisión guiada 

      Vall-Llossera Ferran, Mercedes Magdalena; Ruiz Boqué, Sílvia; Junyent Giralt, Gabriel (Institución ferial de Madrid (IFEMA), 1988)
      Text en actes de congrés
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      The purpose of this paper is the study of homodyne optical receivers for PSK modulations, using a direct-decision’s scheme, that is a Costas loop scheme’s modification. After optimimizing receiver parameters we bound the ...
    • Receptor PSK homodino por fibra óptica: influencia del retardo en el PLL con decisión guiada 

      Ruiz Boqué, Sílvia; Junyent Giralt, Gabriel (Universidad Politécnica de Madrid (UPM), 1988)
      Text en actes de congrés
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      A delay in homodyne PSK receivers with decision-driven Phase Locked-Loop is needed to equalize the transit time in the arms. This work shows a study about the effect of this delay over the phase variance and the receiver ...
    • Resolution of moment equations in a nonlinear optical amplifier 

      Junyent Giralt, Gabriel; Usandizaga Sainz, Aranzazu (Institution of Electrical Engineers, 1987-01-02)
      Article
      Accés obert
      In the letter a new method for the resolution of the moment equations in a nonlinear optical amplifier is exposed. Results for the four first moments for the saturated and unsaturated absorption cases are presented. These ...
    • Resources optimization in GMPLS-based optical multilayer networks 

      Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo; Spadaro, Salvatore; Comellas Colomé, Jaume; Junyent Giralt, Gabriel (2009-06-09)
      Text en actes de congrés
      Accés restringit per política de l'editorial
    • Resultados funcionales del prototipo de un Sistema de comunicación óptica coherente por fibra óptica a alta velocidad 

      Prat Gomà, Josep Joan; Junyent Giralt, Gabriel; Roldán Andrade, Jesús (1992)
      Text en actes de congrés
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    • Scalable hybrid path computation procedure for PCE-based 

      Hernández Sola, Guillem; Perelló Muntan, Jordi; Agraz Bujan, Fernando; Spadaro, Salvatore; Comellas Colomé, Jaume; Junyent Giralt, Gabriel (2011)
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      In the Hierarchical Path Computation Element (H-PCE) architecture, an optimum end-to-end path is computed using a hierarchical relationship among PCEs. An H-PCE-based path computation procedure provides low network ...
    • Scalable hybrid path computation procedure for PCE-based multi-domain WSON networks 

      Hernández Sola, Guillem; Perelló Muntan, Jordi; Agraz Bujan, Fernando; Spadaro, Salvatore; Comellas Colomé, Jaume; Junyent Giralt, Gabriel (IEEE, 2011)
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      In the Hierarchical Path Computation Element (H-PCE) architecture, an optimum end-to-end path is computed using a hierarchical relationship among PCEs. An H-PCE-based path computation procedure provides low network blocking ...
    • Secciones en cascada fibra-amplificador óptico: evaluación de las prestaciones introducidas en comunicadciones por fibra óptica con detección heterodina 

      Junyent Giralt, Gabriel; Ruiz Moreno, Sergio; Ruiz Boqué, Sílvia (Consejo Superior de Investigaciones Científicas (CSIC), 1986)
      Text en actes de congrés
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      This paper deals with the performances of a coherent optical fiber transmission link with linear optical-amplifiers chains in which identical sections of attenuating fiber alternate with identical amplifiers. The overall ...
    • Sistema de ecualización con realimentación cuantizada para sistemas ópticos coherentes CPFSK de banda ancha 

      Prat Gomà, Josep Joan; Cerdà, P.; Roldán Andrade, Jesús; Junyent Giralt, Gabriel (1990)
      Text en actes de congrés
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    • Some open issues in multi-domain/multi-operator/multi-granular ASON/GMPLS networks 

      Spadaro, Salvatore; Velasco Esteban, Luis Domingo; Perelló Muntan, Jordi; Agraz Bujan, Fernando; Comellas Colomé, Jaume; Junyent Giralt, Gabriel (IEEE, 2009-07-31)
      Text en actes de congrés
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      Large optical backbone networks may be composed of several domains, each one controlled by different administrators/operators. Besides, the bandwidth granularity of these domains may be different. Label Switched Paths ...
    • Spatial partitioning for proactive spectrum fragmentation avoidance in flex-grid/SDM dynamic optical core networks 

      Comellas Colomé, Jaume; Perelló Muntan, Jordi; Solé Pareta, Josep; Junyent Giralt, Gabriel (2020-10)
      Article
      Accés obert
      Spectrum fragmentation has always been a major issue to overcome toward spectrally efficient Flex-Grid over Single-Mode Fiber dynamic optical networks and continues like so when evolving to Flex-Grid over Spatial Division ...
    • Split spectrum-enabled route and spectrum assignment in elastic optical networks 

      Pagès Cruz, Albert; Perelló Muntan, Jordi; Spadaro, Salvatore; Junyent Giralt, Gabriel (2014-07-01)
      Article
      Accés restringit per política de l'editorial
      The Split Spectrum Approach (SSA) in elastic optical networks is based on splitting a demand into smaller sub-signals when a blocking situation arises, either due to the lack of spectral resources or transmission reach ...
    • Statistical analysis of nonlinear optical amplifier in high saturation 

      Ruiz Moreno, Sergio; Junyent Giralt, Gabriel; Soneira Ferrando, M. José (1988-02)
      Article
      Accés obert
    • Survey of Faster-Than-Nyquist for Flexible Passive Optical Networks 

      Altabas, Jose Antonio; Arribas, Paula; Izquierdo, David; Sotelo, Félix; Lerín de la Santísima Trinidad, Adolfo; Fàbrega, Josep Maria; Lázaro Villa, José Antonio; Garces, Ignacio; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2015)
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      The constant growing in traffic demands has driven to look for new methods with which to reduce the occupied bandwidth and efficient use of the optical spectrum. Despite non-orthogonal signalling lead to intersymbolic ...
    • Survivable IP/MPLS-Over-WSON multilayer network optimization 

      Ruiz Ramírez, Marc; Pedrola Escribà, Òscar; Velasco Esteban, Luis Domingo; Careglio, Davide; Fernández Palacios, Juan Pedro; Junyent Giralt, Gabriel (Optical Society of America, 2011-08-01)
      Article
      Accés obert
      Network operators are facing the problem of dimensioning their networks for the expected huge IP traffic volumes while keeping constant or even reducing the connectivity prices. Therefore, new architectural solutions able ...