Enviaments recents

  • Design of flexible udWDM metro-access network devices assisted by high resolution complex spectroscopy 

    Altabas, Jose Antonio; Izquierdo, David; Pascual, Álvaro; Sarmiento Hernández, Samael; Lázaro Villa, José Antonio; Garces, Ignacio; Villafranca, A. (2016)
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    The new cloud services, the Internet of Things (IoT) and the convergence of mobile and optical networks in the 5G scenario are pushing up the traffic demand over the metro-access networks. Flexible ultra-dense Wavelength ...
  • Evaluating the energy efficiency of DWA algorithms in UDWDM-PONs 

    Segarra Mullerat, Josep; Sales Zaragoza, Vicente; Polo Querol, Víctor; Prat Gomà, Josep Joan (2016)
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    Ultra-Dense Wavelength Division Multiplexing (UDWDM) has been proposed for the optical access Passive Optical Network (PON) in the COst-effective COhereNt Ultra-dense-WDM-PON for lambda-To-the-user access (COCONUT) ...
  • Requirements to support cloud, video and 5G services on the telecom cloud 

    Asensio García, Adrián; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    The growth of data traffic related to datacenter (DC) interconnection and the expected explosion of services requiring intensive use of telecom networks, such as video and mobile services, are contributing to the increment ...
  • Options for cost-effective capacity upgrades in backbone optical networks 

    Shariati, Behnam; Rivas Moscoso, José Manuel; Klonidis, Dimitrios; Tomkos, Ioannis; Ben Ezra, Shalva; Jiménez, Felipe; Marom, Dan M.; Sayyad Khodashenas, Pouria; Comellas Colomé, Jaume; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    Upgrading the capacity of backbone optical networks while delivering contents to the end-users with a reduced cost per bit is a day-by-day challenge of network operators. In this paper, we first discuss several mid-term ...
  • 1Gbps full-duplex 5GHz frequency slots uDWDM flexible metro/access networks based on VCSEL-RSOA transceiver 

    Altabas, Jose Antonio; Izquierdo, David; Lázaro Villa, José Antonio; Garces, Ignacio (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    1Gbps full-duplex 5GHz frequency slot is proposed for uDWDM Flexible Metro-Access Networks. The costeffective ONU transceiver is based on VCSEL as LO for coherent reception and seed for phase-modulated RSOA, providing ...
  • 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 ...
  • Experimental demonstration of heterogeneous cross stratum broker for scientific applications 

    Castro Casales, Alberto; Pérez Vela, Alba; Gifre Renom, Lluís; Proietti, Roberto; Cen, Chen; Yin, J.; Chen, Xiaoliang; Cao, Zheng; Zhu, Zuqing; Mishra, Vinod; Velasco Esteban, Luis Domingo; Yoo, S. J. B. (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    We propose and demonstrate cross-stratum Broker orchestration for scientific applications and heterogeneous resources reservation in DCs, HPC facilities and networks belonging to different operators. Experiments were ...
  • Big data analytics in support of virtual network topology adaptability 

    Gifre Renom, Lluís; Contreras, Luis Miguel; Lopez Alvarez, Victor; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    ABNO's OAM Handler is extended with big data analytics capabilities to anticipate traffic changes in volume and direction. Predicted traffic is used as input for VNT re-optimization. Experimental assessment is realized on ...
  • Resource orchestration in SDN-based future optical data centres 

    Spadaro, Salvatore; Pagès Cruz, Albert; Agraz Bujan, Fernando; Montero, Rafael; Perelló Muntan, Jordi (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    Data center (DC) infrastructures are a key element for nowadays Internet and cloud services. However, due to the increase of traffic that DCs have to manage, optical-based network architectures are being investigated to ...
  • A simple strategy to improve spectrum use in multi-rate flexgrid optical networks 

    Comellas Colomé, Jaume; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    A 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 ...

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