Enviaments recents

  • Practical spectral efficiency estimation for optical networking 

    Gené Bernaus, Joan M.; Perelló Muntan, Jordi; Cho, Junho; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    Assigning the right spectral resources is the key to flex-grid optical networking. Finding the optimal spectral allocation is a daunting task, as there are many variables at play that make accurate network models very ...
  • Evaluating the impact of the guard band width on the benefits of probabilistic constellation shaping in future flex-grid over multicore fibre optical backbone networks 

    Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Cho, Junho; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    Probabilistic constellation shaping (PCS) has emerged as an advanced modulation technique that provides a fine-grained software-defined trade-off between achievable spectral efficiency (SE) and transmission reach to deliver ...
  • Reducing the number of transceivers with probabilistic constellation shaping in flex-grid over MCF optical backbone networks 

    Perelló Muntan, Jordi; Gené Bernaus, Joan M.; Cho, Junho; Spadaro, Salvatore (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    This paper quantifies the potential reduction in the number of required transceivers that the use of probabilistic constellation shaping (PCS) can bring to Flex-Grid over multicore fiber (MCF) optical backbone networks, ...
  • Distributed architecture supporting intelligent optical measurement aggregation and streaming event telemetry 

    González Pacheco, Pol; Casellas Regi, Ramon; Pedreno Manresa, José Juan; Autenrieth, Achim; Boitier, Fabien; Shariati, Mohammad Behnam; Fischer, Johannes Karl; Ruiz Ramírez, Marc; Comellas Colomé, Jaume; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    A distributed telemetry system integrating optical measurement and event data collection is demonstrated. Measurements of optical spectra from Nokia Bell Labs, of optical transponders from ADVA and SDN controller events ...
  • Experimental validation of deep learning-based models for optical time domain analysis 

    Devigili, Mariano; Sequeira, Diogo Gonçalo; Santos, Caio; Ruiz Ramírez, Marc; Shariati, Mohammad Behnam; Costa, Nelson; Napoli, Antonio; Fischer, Johannes Karl; Pedro, João; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Comunicació de congrés
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    Optical constellations generated by Deep Learning models trained with datasets generated through simulation are compared to experimentally collected ones. The obtained high accuracy enables its application for optical time ...
  • Optical interconnection for datacenters: To switch or not to switch 

    Comellas Colomé, Jaume; Junyent Giralt, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    Optical interconnection is seen as a promising solution to alleviate the congestion problems inside datacenters. Previously reported studies focus solely on optical circuit switching to establish connections. In this work ...
  • Secure optical communications based on fast cryptography 

    Velasco Esteban, Luis Domingo; Iqbal, Masab; Ruiz Ramírez, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    Although security solutions, like Advanced Encryption Standard (AES) and ChaCha, are common at the packet layer, secure transmission at the optical layer is still not implemented. The reason is that such cryptographic ...
  • Using a SNR digital twin for failure management 

    Velasco Esteban, Luis Domingo; Barzegar, Sima; Ruiz Ramírez, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    The development of Digital Twins to represent the optical transport network might enable multiple applications for network operation, including automation and fault management. In this work, we use GNPy as a Signal to Noise ...
  • PILOT: A methodology for modeling the performance of packet connections 

    Comellas Colomé, Jaume; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    Network Services automation requires predictable Quality of Service (QoS) performance, measured in terms of throughput, delay and jitter, to allow making proactive decisions. QoS is typically guaranteed by overprovisioning ...
  • Dynamic traffic prediction model retraining for autonomous network operation 

    Tabatabaeimehr, Fatemehsadat; Velasco Esteban, Luis Domingo; Ruiz Ramírez, Marc; Khalili, Hamkeh; Aparicio Pardo, Ramón (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    In general, the availability of an accurate machine learning (ML) model plays a particularly important role in the development of new networking solutions and is one of the main drivers for the development of 5G and beyond ...
  • A distributed telemetry architecture for optical networks 

    González Pacheco, Pol; Velasco Esteban, Luis Domingo; Ruiz Ramírez, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2023)
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    A distributed telemetry system is proposed with agents receiving and analyzing data before sending to a centralized manager. Intelligent data aggregation on optical constellations telemetry largely reduces data rate without ...
  • Dynamic subcarrier allocation for P2MP connections 

    Shakespear Miles, Hailey Josephine; Ruiz Ramírez, Marc; Velasco Esteban, Luis Domingo (Institute of Electrical and Electronics Engineers (IEEE), 2023)
    Text en actes de congrés
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    This paper proposes a solution for dynamically allocating subcarriers in a point-to-multipoint connection in the upstream direction. Using Digital Subcarrier Multiplexing a single carrier can be divided into several ...

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