Now showing items 21-40 of 75

  • BER improvement using optical gain clamped amplifier for burst transmission and critical cases studies 

    Zannin, Marcelo; Ennser, Karin; Taccheo, Stefano; Careglio, Davide; Solé Pareta, Josep; Aracil Rico, Javier (IEEE Press and Wiley, 2009-03-22)
    Conference report
    Open Access
    This paper demonstrates significant BER improvement in burst traffic transmission using optical-gain clamped amplifiers. Critical chaotic cases are identified for peculiar burst sequences and their impact in transmission ...
  • Bursty cell stream characterization 

    Solé Pareta, Josep; Domingo Pascual, Jordi; García Vidal, Jorge (1989-01)
    External research report
    Open Access
    Traffic cell stream generated by a single source (or a single connection traffic cell stream) may be characterized by its mean traffic intensity (or normalized mean cell rate) Ai, but also by its burstiness. "Burstiness ...
  • Characterization and modeling of multicast communication in cache-coherent manycore processors 

    Abadal Cavallé, Sergi; Martinez, Raul; Solé Pareta, Josep; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (2016-01-21)
    Article
    Open Access
    The scalability of Network-on-Chip (NoC) designs has become a rising concern as we enter the manycore era. Multicast support represents a particular yet relevant case within this context, mainly due to the poor performance ...
  • Computing and communications for the software-defined metamaterial paradigm: a context analysis 

    Abadal Cavallé, Sergi; Liaskos, Christos; Tsioliaridou, Ageliki; Ioannidis, Sotiris; Pitsillides, Andreas; Solé Pareta, Josep; Alarcón Gallo, Eduardo; Cabellos Aparicio, Alberto (Institute of Electrical and Electronics Engineers (IEEE), 2017-01-01)
    Article
    Open Access
    Metamaterials are artificial structures that have recently enabled the realization of novel electromagnetic components with engineered and even unnatural functionalities. Existing metamaterials are specifically designed ...
  • Effective amplification of real WDM burst traffic using optical gain clamping 

    Zannin, Marcelo; Taccheo, Stefano; Ennser, Karin; Careglio, Davide; Solé Pareta, Josep (2008-05-04)
    Conference report
    Open Access
    Experimental studies of real optical burst traffic in WDM systems are performed with optical gain clamping for stabilizing the EDFA amplification. Impairments of power variation due to burst are shown to be negligible.
  • Elastic Networks thematic network results I: Planning and control of Flex-Grid/SDM 

    Moreno Muro, Francisco Javier; Rumipamba Zambrano, Rubén Darío; Perelló Muntan, Jordi; Pavón Mariño, Pablo; Solé Pareta, Josep; Martínez, Ricardo; Casellas Regi, Ramón; Vilalta, Ricard; Muñoz González, Raul; Mata Sáez, Javier; Ruiz Pérez, Lidia; Merayo Álvarez, Noemí; Miguel Jiménez, Ignacio de; Durán Barroso, Ramón J. (Institute of Electrical and Electronics Engineers (IEEE), 2018)
    Conference report
    Open Access
    This paper overviews the approach of the Elastic Networks research network to address different issues of planning and control of Flex-Grid/SDM optical networks. Firstly, we present the Net2Plan open-source planning tool ...
  • 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 ...
  • Energy aware paradigm for energy efficient ICT: a systemic approach 

    Ricciardi, Sergio; Careglio, Davide; Santos Boada, Germán; Solé Pareta, Josep (2010)
    Conference report
    Restricted access - publisher's policy
    In this work we describe the Energy Aware Paradigm we believe should be adopted for successfully designing and deploying energy efficient ICT (Information and Communication Technologies) based systems.
  • Energy-oriented models for WDM networks 

    Ricciardi, Sergio; Careglio, Davide; Palmieri, Francesco; Fiore, Ugo; Santos Boada, Germán; Solé Pareta, Josep (2010)
    Conference report
    Open Access
    A realistic energy-oriented model is necessary to formally characterize the energy consumption and the consequent carbon footprint of actual and future high-capacity WDM networks. The energy model describes the energy ...
  • Estudi i proposta d'esquemes d'avaluació per a dispositius ATM 

    Solé Pareta, Josep (Universitat Politècnica de Catalunya, 1991-05-17)
    Doctoral thesis
    Open Access
    Las contribuciones principales del trabajo realizado en esta tesis son: 1) estudio de la influencia del grado de rafagueo (burstiness) del trafico en el comportamiento de los dispositivos que integran una red ATM, 2) ...
  • Evaluating the feasibility of wireless Networks-on-Chip enabled by graphene 

    Abadal Cavallé, Sergi; Mestres Sugrañes, Albert; Iannazzo Soteras, Mario Enrique; Solé Pareta, Josep; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Association for Computing Machinery (ACM), 2014)
    Conference report
    Restricted access - publisher's policy
    Network-on-Chip (NoC) is currently the paradigm of choice for covering the on-chip communication needs of multicore processors. As we reach the manycore era, though, electrical interconnects present performance and power ...
  • Exploring the physical channel of diffusion-based molecular communication by simulation 

    Llatser Martí, Ignacio; Pascual, Iñaki; Garralda, N.; Cabellos Aparicio, Alberto; Pierobon, M.; Alarcón Cot, Eduardo José; Solé Pareta, Josep (IEEE, 2011)
    Conference report
    Open Access
    Diffusion-based molecular communication is a promising bio-inspired paradigm to implement nanonetworks, i.e., the interconnection of nanomachines. The peculiarities of the physical channel in diffusion-based molecular ...
  • Fundamentals of graphene-enabled wireless on-chip networking 

    Abadal Cavallé, Sergi; Llatser Martí, Ignacio; Mestres Sugrañes, Albert; Solé Pareta, Josep; Alarcón Cot, Eduardo José; Cabellos Aparicio, Alberto (Springer, 2017)
    Part of book or chapter of book
    Restricted access - publisher's policy
    The book presents the state of art in the emerging field of molecular and nanoscale communication. It gives special attention to fundamental models, and advanced methodologies and tools used in the field. It covers a wide ...
  • Generalized Cognitive Networks of Virtual Resources 

    Manzalini, A; Moiso, Corrado; Minerva, R.; Hesselbach Serra, Xavier; Solé Pareta, Josep; Botero Vega, Juan Felipe (2010)
    Conference report
    Open Access
    The pervasive distribution of digital devices (e.g., laptops, mobile phone, digital camera, music players, RFID, sensors, smart cards) will create a large distributed computational and networking environment that will ...
  • Improving IA-RWA algorithms in translucent networks by regenerator allocation 

    Marín Tordera, Eva; Martinez, R; Muñoz, R; Casellas, Ramon; Solé Pareta, Josep (IEEE, 2009)
    Conference report
    Open Access
    In this paper we present the impact of considering regenerator allocation when selecting routes and wavelengths in translucent networks. In the regular operation of translucent networks, i.e. with dynamic traffic, we assume ...
  • Initial MAC exploration for graphene-enabled wireless networks-on-chip 

    Piro, Giuseppe; Abadal Cavallé, Sergi; Mestres Sugrañes, Albert; Alarcón Cot, Eduardo José; Solé Pareta, Josep; Grieco, L. Alfredo; Boggia, Gennaro (Association for Computing Machinery (ACM), 2014)
    Conference report
    Restricted access - publisher's policy
    In the upcoming many-core era, chip multiprocessor architectures will be composed of hundreds or even thousands of processor cores, which interact among them through an on-chip communication platform for synchronization ...
  • Integració del aprenentatge cooperatiu i del ensenyament expositiu a través del campus virtual 

    Santos Boada, Germán; Solé Pareta, Josep (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2009-03-25)
    Conference report
    Open Access
    Es presenta un model per compaginar l'activitat docent expositiva i l'aprenentatge cooperatiu utilitzant les eines del campus virtual ATENEA. El mètode docent utilitzat està fonamentat en l'ús de les metodologies educatives ...
  • Keeping the packet sequence in optical packet-switched networks 

    Callegati, Franco; Careglio, Davide; Cerroni, Walter; Muretto, Giovanni; Raffaelli, Carla; Solé Pareta, Josep; Zaffoni, Paolo (2005-11-07)
    Article
    Restricted access - publisher's policy
    This paper deals with optical packet switches with limited buffer capabilities, subject to asynchronous, variable-length packets and connection-oriented operation. The focus is put on buffer scheduling policies and queuing ...
  • La fibra óptica, hoy 

    Solé Pareta, Josep (1985-11)
    Article
    Open Access
    Aplicaciones, ventajas y tipologías de la fibra óptica como una tecnología avanzada en la transmisión de datos.
  • Metaheuristic hybridizations for the regenerator placement and dimensioning problem in sub-wavelength switching optical networks 

    Pedrola Escribà, Òscar; Careglio, Davide; Klinkowski, Miroslaw; Velasco Esteban, Luis Domingo; Bergman, K.; Solé Pareta, Josep (Elsevier, 2013-02-01)
    Article
    Restricted access - publisher's policy
    Physical layer impairments severely limit the reach and capacity of optical systems, thereby hampering the deployment of transparent optical networks (i.e., no electrical signal regenerators are required). Besides, the ...