Ara es mostren els items 23-42 de 48

    • Inter-domain Routing in Optical Networks with Wavelength Converters 

      Beshir, Anteneh; Yannuzzi, Marcelo; Kuipers, Fernando Antonio (IEEE Computer Society Publications, 2010)
      Text en actes de congrés
      Accés obert
      With the increasing deployment of wavelengthdivision multiplexing (WDM) optical networks, the need for advanced lightpath provisioning algorithms and protocols in a multi-domain setting is becoming evident. In order to ...
    • L-Band In-Line Remote Amplification for an Extended WDM/PON Ring Architecture 

      Chatzi, Sotiria; Tomkos, Ioannis; Lázaro Villa, José Antonio; Prat Gomà, Josep Joan (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-06-28)
      Text en actes de congrés
      Accés obert
      In this paper, a study on a fully passive WDM/PON ring architecture which reaches 19 km distance, while serving more than 1000 users with symmetric several hundred Mbit/s per user is presented. The design is based on ...
    • Load-balanced wavelength assignment strategies for optical burst/packet switching networks 

      Agustí Torra, Anna; Cervelló Pastor, Cristina; Fiol Mora, Miquel Àngel (2009-03)
      Article
      Accés restringit per política de l'editorial
      Loss-free schemes are defined to ensure successful packet/burst transmissions in optical packet/burst switching networks. To this end, they rely on a collision-free routing and wavelength assignment (CF-RWA) scheme ...
    • Maximización del valor actual neto en redes ópticas 

      Cid Mena, Ana Cecilia (Universitat Politècnica de Catalunya, 2010-06)
      Projecte Final de Màster Oficial
      Accés obert
      En este trabajo se utilizan técnicas de investigación operativa y estadística para desarrollar una herramienta útil en la toma de decisiones en empresas de telecomunicaciones. Se comparan dos esquemas de particionamiento ...
    • Mesures del senyal sísmic amb diferents amplificadors de l'acondicionament d'un OBS 

      Caelles Vilà, Enric (Universitat Politècnica de Catalunya, 2007-06-28)
      Projecte/Treball Final de Carrera
      Accés obert
      Realitzat a/amb:   Sarti, Centro Tecnológico de Vilanova i la Geltrú
    • Modeling physical-layer impairments in multi-domain optical networks 

      Yannuzzi, Marcelo; Marín Tordera, Eva; Serral Gracià, René; Masip Bruin, Xavier; González de Dios, Óscar; Jimenez Chico, Javier; Verchere, Dominique (IEEE Computer Society Publications, 2011)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The advantages of optical transparency are still confined to the boundaries of a domain, since the optical signals are subject to O/E/O conversions at the border nodes that separate two optical domains. The extension ...
    • Multi-service MAC-enabled OBS networks 

      Triay Marquès, Joan; Zervas, Georgios; Cervelló Pastor, Cristina; Nejabati, Reza; Simeonidou, Dimitra (2010-03)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this paper, a novel multi-service architectural solution based on a MAC protocol for mesh OBS networks is designed and the network performance among TDM services and connectionless burst transmissions is evaluated through ...
    • Next Generation Optical Access Networks: from TDM to WDM 

      Gutiérrez González, Lluís; Garfias Hernandez, Paola; Andrade Jardín, Marilet de; Cervelló Pastor, Cristina; Sallent Ribes, Sebastián (INTECH, 2010-03)
      Capítol de llibre
      Accés obert
    • OBGP+: A Simple Approach to Drastically Improve OBGP 

      Yannuzzi, Marcelo; Masip Bruin, Xavier; Fabregó, Guillem; Sánchez López, Sergio; Solé Pareta, Josep (IEEE Computer Society Publications, 2008)
      Text en actes de congrés
      Accés obert
      During the last few years, the research community has shown an increasing interest in the subject of inter-domain routing in optical networks, so new approaches like the optical extension of BGP, namely OBGP, have arisen. ...
    • Optimization of Rayleigh-limited WDM-PONs with reflective ONU by MUX positioning and optimal ONU gain 

      López Pastor, Eduardo Tommy; Lázaro Villa, José Antonio; Arellano Pinilla, Cristina; Polo Querol, Víctor; Prat Gomà, Josep Joan (2010-01)
      Article
      Accés obert
      In this work, the influence of the distribution element position and the reflective optical network unit (ONU) gain in wavelength-division-multiplexing passive optical networks are reported. After the theoretical and ...
    • Performance issues in Optical Burst/Packet Switching 

      Klinkowski, Miroslaw; Careglio, Davide; Aracil Rico, Javier; Azodolmolky, Siamak; García Haro, Juan; Gunreben, Sebastian; Hu, Guoqiang; Izal, Mikel; Kimsas, Andreas; Veiga Gontán, Javier; Tzanakaki, Anna; Tomkos, Ioannis; Spadaro, Salvatore; Scharf, Joachim; Perelló Muntan, Jordi; Pavón Mariño, Pablo; Morató, Daniel; Magaña, Eduardo; Köhn, Martin (Springer, 2009-04-01)
      Capítol de llibre
      Accés restringit per política de l'editorial
      This chapter summarises the activities on optical packet switching (OPS) and optical burst switching (OBS) carried out by the COST 291 partners in the last 4 years. It consists of an introduction, five sections with ...
    • Performance of translucent optical networks under dynamic traffic and uncertain physical-layer information 

      Yannuzzi, Marcelo; Quagliotti, Marco; Maier, G.; Marín Tordera, Eva; Masip Bruin, Xavier; Sánchez López, Sergio; Erangoli, Walter; Tamiri, G (IEEE Computer Society Publications, 2009)
      Text en actes de congrés
      Accés obert
      This paper investigates the performance of translucent Optical Transport Networks (OTNs) under different traffic and knowledge conditions, varying from perfect knowledge to drifts and uncertainties in the physical-layer ...
    • Performance overview of the offset time emulated OBS network architecture 

      Klinkowski, Miroslaw; Careglio, Davide; Solé Pareta, Josep; Marciniak, Marian (2009-07)
      Article
      Accés obert
      Optical burst switching (OBS) control architecture considers two different models for the management of the offset time in the network. The conventional OBS (C-OBS) introduces the offset time in soft-way by delaying the ...
    • QoS-Enabled distributed access on optical burst-switched networks 

      Triay Marquès, Joan; Zervas, Georgios; Cervelló Pastor, Cristina; Nejabati, Reza; Simeonidou, Dimitra (IEEE Press. Institute of Electrical and Electronics Engineers, 2010-01)
      Comunicació de congrés
      Accés obert
      Optical Burst Switching (OBS) has been proposed as an efficient technology to cope with the ever increasing bursty traffic on the Internet. The emergence of a broad range of network-driven applications (e.g. multimedia, ...
    • Real burst traffic amplification in optically gain clamped amplifier 

      Ennser, Karin; Taccheo, Stefano; Careglio, Davide; Solé Pareta, Josep; Aracil Rico, Javier (2008-02-24)
      Comunicació de congrés
      Accés obert
      Optical burst amplification in a gain-stabilized amplifier is theoretically investigated using real burst traffic data. The results show that excellent performance are obtained for WDM transmission with negligible interplay ...
    • Regenerator allocation in translucent networks under inaccurate physical information 

      Marín Tordera, Eva; Yannuzzi, Marcelo; Masip Bruin, Xavier; Sánchez López, Sergio; Martínez, Ricardo; Muñoz, Raul; Casellas, Ramon (2009-12-14)
      Text en actes de congrés
      Accés obert
      Optimized regenerator allocation techniques select which of the already installed regenerators in a translucent network must be used in order to maximize the quality of the optical signal while minimizing the opaqueness ...
    • Regenerator allocation in WDM networks with uncertainities in the Q factor 

      Marín Tordera, Eva; Yannuzzi, Marcelo; Masip Bruin, Xavier; Serral Gracià, René; Sánchez López, Sergio (2010-06-14)
      Text en actes de congrés
      Accés obert
      The performance of the regenerator allocation algorithms in WDM networks strongly depends on the accuracy of the physical-layer information such as the Q factor. In a translucent WDM network the already installed ...
    • Sinergias en el diseño de infraestructuras de telecomunicaciones para centros de procesos de datos 

      Call Rodríguez, David (Universitat Politècnica de Catalunya, 2016)
      Projecte/Treball Final de Carrera
      Accés obert
      Los Centros de Procesamiento de Datos (CPD) constituyen una parte fundamental en el ámbito de las infraestructuras de telecomunicaciones, dado que concentran los recursos necesarios para el proceso de la información de ...
    • Sintonia tèrmica de làsers per a xarxes òptiques udWDM 

      Borotau Bosser, Pau (Universitat Politècnica de Catalunya, 2014-07-29)
      Projecte/Treball Final de Carrera
      Accés restringit per acord de confidencialitat
    • Spectrum defragmentation in elastic optical networks 

      Aragonès Sabaté, Pau (Universitat Politècnica de Catalunya, 2016-06)
      Treball Final de Grau
      Accés obert
      In the present project we have studied the concept and several techniques for spectrum defragmentation in elastic optical networks. The simulation tool used was the software named MATLAB, in which all the algorithms here ...