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  • Three years of an intensive programme: experiences, observations and learning points  Open access

     Myrup , J.; Gutiérrez-López, J.; Kirikova, M.; Zabludowski, L.; Comellas, J.
    International Symposium on Project Approaches in Engineering Education
    p. 206-213
    Presentation's date: 2015-07-07
    Presentation of work at congresses
    Access to the full text
  • Improving link spectrum utilization in Flexgrid optical networks  Open access

     Comellas, J.; Junyent, G.
    Journal of optical communications and networking
    Vol. 7, num. 7, p. 618-627
    DOI: 10.1364/JOCN.7.000618
    Date of publication: 2015-07-01
    Journal article
    Access to the full text
  • Using spectrum management techniques to differentiate services in elastic optical networks

     Comellas, J.; Asensio, A.; Ruiz, M.; Junyent, G.; Velasco, L.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2015.7193554
    Presentation's date: 2015-07
    Presentation of work at congresses
  • Impact of filter sharpness on the performance of elastic optical networks

     Sayyad, P.; Rivas-Moscoso, J.; Klonidis, D.; Tomkos, I.; Behnam Shariati, M.; Comellas, J.
    IEEE International Conference on Communications
    p. 5192-5197
    DOI: 10.1109/ICC.2015.7249148
    Presentation's date: 2015-06-11
    Presentation of work at congresses
  • On the benefits of multi-path recovery in flexgrid optical networks

     Castro, A.; Velasco, L.; Comellas, J.; Junyent, G.
    Photonic network communications
    Vol. 28, num. 3, p. 251-263
    DOI: 10.1007/s11107-014-0443-5
    Date of publication: 2014-12-01
    Journal article
  • A comparison of elastic and multi-rate optical networks performance

     Sayyad, P.; Pomares, D.; Perello, J.; Spadaro, S.; Comellas, J.
    International Conference on Transparent Optical Networks
    p. 6876268-1-6876268-4
    DOI: 10.1109/ICTON.2014.6876268
    Presentation's date: 2014-07
    Presentation of work at congresses
  • On the performance of dynamic source aggregation of sub-wavelength connections in EONs

     Sayyad, P.; Comellas, J.; Perello, J.; Spadaro, S.; Junyent, G.
    International Conference on Transparent Optical Networks
    p. 6876273-1-6876273-4
    DOI: 10.1109/ICTON.2014.6876273
    Presentation's date: 2014-07
    Presentation of work at congresses
  • Dynamic Routing and Spectrum Allocation in Elastic Optical Networks  Open access

     Sayyad, P.
    Department of Signal Theory and Communications, Universitat Politècnica de Catalunya
    Theses
  • Using spectrum fragmentation to better allocate time-varying connections in elastic optical networks

     Sayyad, P.; Comellas, J.; Spadaro, S.; Perello, J.; Junyent, G.
    Journal of optical communications and networking
    Vol. 6, num. 5, p. 433-440
    DOI: 10.1364/JOCN.6.000433
    Date of publication: 2014-05-01
    Journal article
  • Optimal route, spectrum, and modulation level assignment in split-spectrum-enabled dynamic elastic optical networks

     Pages, A.; Perello, J.; Spadaro, S.; Comellas, J.
    Journal of optical communications and networking
    Vol. 6, num. 2, p. 114-126
    DOI: 10.1364/JOCN.6.000114
    Date of publication: 2014-02-01
    Journal article
  • Experimental assessment of bulk path restoration in multi-layer networks using PCE-based global concurrent optimization

     Castro, A.; Martínez, R.; Casellas, R.; Velasco, L.; Muñoz, R.; Vilalta, R.; Comellas, J.
    Journal of lightwave technology
    Vol. 32, num. 1, p. 81-90
    DOI: 10.1109/JLT.2013.2290588
    Date of publication: 2014-01-01
    Journal article
  • Grup de comunicacions òptiques

     Junyent, G.; Prat, J.; Ruiz-Moreno, S.; Soneira, M.J.; Spadaro, S.; Santos, M.; Gene, J. M.; Lazaro, J.A.; Velasco, L.; Perez-Pueyo, R.; Segarra, J.; Polo, V.; Agraz, F.; Ruiz, M.; Cano, I.; Sales, V.; Sayyad, P.; Pages, A.; Castro, A.; Gifre, L.; Tabares, J.; Escayola, F.; Chu, G.; Comellas, J.
    Competitive project
  • Wavelength Selective Switches time requirements for shared path protection in ASON/GMPLS rings

     Velasco, L.; Spadaro, S.; Comellas, J.; Junyent, G.
    European Conference on Optical Communication
    p. 1-2
    Presentation of work at congresses
  • A GRASP with path-relinking heuristic for the survivable IP/MPLS-over-WSON multi-layer network optimization problem

     Pedrola, O.; Ruiz, M.; Velasco, L.; Careglio, D.; González de Dios , O.; Comellas, J.
    Computers & operations research
    Vol. 40, num. 12, p. 3174-3187
    DOI: 10.1016/j.cor.2011.10.026
    Date of publication: 2013-12
    Journal article
  • Multi-gigabit European Research and Education Network and Associated Services

     Junyent, G.; Gifre, L.; Castro, A.; Asensio, A.; Comellas, J.; Ruiz, M.; Velasco, L.
    Competitive project
  • An elastic networks OMNeT++-based simulator

     Asensio, A.; Castro, A.; Velasco, L.; Comellas, J.
    International Conference on Transparent Optical Networks
    p. Tu.C1.2-1-Tu.C1.2-4
    DOI: 10.1109/ICTON.2013.6602814
    Presentation's date: 2013-06
    Presentation of work at congresses
  • Global concurrent optimization: advantages and opportunities in flexgrid-based networks

     Castro, A.; Velasco, L.; Comellas, J.; Junyent, G.
    International Conference on Transparent Optical Networks
    p. Mo.C4.1-1-Mo.C4.1-4
    DOI: 10.1109/ICTON.2013.6602714
    Presentation's date: 2013-06
    Presentation of work at congresses
  • A column generation approach for large-scale RSA-based network planning

     Ruiz, M.; Zotkiewicz, M.; Velasco, L.; Comellas, J.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2013.6603034
    Presentation's date: 2013-06
    Presentation of work at congresses
  • Impact of aggregation level on the performance of dynamic lightpath adaptation under time-varying traffic

     Klinkowski, M.; Ruiz, M.; Asensio, A.; Lopez, V.; Castro, A.; Velasco, L.; Comellas, J.
    International Conference on Optical Network Design and Modeling
    p. 184-189
    Presentation's date: 2013-04
    Presentation of work at congresses
  • A traffic intensity model for flexgrid optical network planning under dynamic traffic operation

     Ruiz, M.; Velasco, L.; Comellas, J.; Junyent, G.
    Optical Fiber Communications Conference and Exposition and National Fiber Optic Engineers Conference
    DOI: 10.1364/OFC.2013.OTu3A.6
    Presentation's date: 2013-03
    Presentation of work at congresses
  • Dynamic restoration in multi-layer IP/MPLS-over-flexgrid networks

     Castro, A.; Velasco, L.; Comellas, J.; Junyent, G.
    Design of Reliable Communication Networks (DRCN)
    p. 155-162
    Presentation's date: 2013-03
    Presentation of work at congresses
  • Elastic spectrum allocation for time-varying traffic in flexgrid optical networks

     Klinkowski, M.; Ruiz, M.; Velasco, L.; Careglio, D.; López, V.; Comellas, J.
    IEEE journal on selected areas in communications
    Vol. 31, num. 1, p. 26-38
    DOI: 10.1109/JSAC.2013.130104
    Date of publication: 2013-01
    Journal article
  • Extending the flexgrid optical core towards the edges

     Velasco, L.; Ruiz, M.; Castro, A.; Comellas, J.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2013.6602717
    Presentation of work at congresses
  • Experimental validation of dynamic restoration in GMPLS-controlled multi-layer networks using PCE-based global concurrent optimization

     Martínez, R.; Castro, A.; Casellas, R.; Muñoz, R.; Velasco, L.; Vilalta, R.; Comellas, J.
    Optical Fiber Communications Conference and Exposition and National Fiber Optic Engineers Conference
    p. 1-3
    DOI: 10.1364/OFC.2013.OW4G.3
    Presentation's date: 2013
    Presentation of work at congresses
  • Modeling the routing and spectrum allocation problem for flexgrid optical networks

     Velasco, L.; Klinkowski, M.; Ruiz, M.; Comellas, J.
    Photonic network communications
    Vol. 24, num. 3, p. 177-186
    DOI: 10.1007/s11107-012-0378-7
    Date of publication: 2012-12
    Journal article
  • Industry-Driven Elastic and Adaptive Lambda Infrastructure for Service and Transport Networks

     Ruiz, M.; Castro, A.; Comellas, J.; Junyent, G.; Gifre, L.; Asensio, A.; Velasco, L.
    Competitive project
  • Experimental evaluation of a dynamic PCE-based regenerator-efficient IA-RWA algorithm in translucent WSON  Open access

     Castro, A.; Martínez, R.; Velasco, L.; Casellas, R.; Muñoz, R.; Comellas, J.
    European Conference and Exhibition on Optical Communication
    p. 1-3
    DOI: 10.1364/ECEOC.2012.Tu.4.D.3
    Presentation's date: 2012-09
    Presentation of work at congresses
    Access to the full text
  • On the performance of flexgrid-based optical networks

     Velasco, L.; Ruiz, M.; Pedrola, O.; Castro, A.; Klinkowski, M.; Careglio, D.; Comellas, J.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2012.6254418
    Presentation's date: 2012-07
    Presentation of work at congresses
  • Single-path provisioning with multi-path recovery in flexgrid optical networks

     Castro, A.; Velasco, L.; Ruiz, M.; Comellas, J.
    International Congress on Ultra Modern Telecommunications and Control Systems and Workshops
    p. 745-751
    DOI: 10.1109/ICUMT.2012.6459763
    Presentation's date: 2012-05-03
    Presentation of work at congresses
  • Value optimization of survivable multilayer IP/MPLS-over-WSON networks

     Velasco, L.; González de Dios , O.; Ricciardi, S.; Castro, A.; Muñoz, F.; Careglio, D.; Comellas, J.
    Photonic network communications
    Vol. 23, num. 3, p. 246-258
    DOI: 10.1007/s11107-011-0354-7
    Date of publication: 2012-05-01
    Journal article
  • Enhanced optical networks featuring adaptable and highly scalable multi-granular transport services

     Ruiz, M.; Junyent, G.; Comellas, J.; Gene, J. M.; Conesa, J.; Velasco, L.; Perello, J.; Agraz, F.; Hernández-Sola, G.; Pages, A.; Sayyad, P.; Castro, A.; Spadaro, S.
    Competitive project
  • Enhanced Optical Networks Featuring Adaptable and Highly Scalable Multi-granular Transport Services (ELASTIC) - TEC2011-27310

     Junyent, G.; Spadaro, S.; Comellas, J.; Gene, J. M.; Velasco, L.; Perello, J.; Conesa, J.; Agraz, F.; Ruiz, M.; Hernández-Sola, G.; Pages, A.; Sayyad, P.
    Competitive project
  • Path-based recovery in flexgrid optical networks

     Castro, A.; Ruiz, M.; Velasco, L.; Junyent, G.; Comellas, J.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2012.6254479
    Presentation's date: 2012
    Presentation of work at congresses
  • Optical network net present value optimization in shared path protection environments

     Ruiz, M.; Velasco, L.; Comellas, J.; Junyent, G.
    Design of Reliable Communication Networks
    p. 38-45
    DOI: 10.1109/DRCN.2011.6076883
    Presentation's date: 2011-10-10
    Presentation of work at congresses
  • A GRASP-based heuristic to design the GMPLS control plane network topology with resilience guarantees

     Ruiz, M.; Velasco, L.; Junyent, G.; Comellas, J.
    International Conference on Transparent Optical Networks
    p. Mo.B3.4-1-Mo.B3.4-4
    DOI: 10.1109/ICTON.2011.5970780
    Presentation's date: 2011-06-28
    Presentation of work at congresses
  • Scalable hybrid path computation procedure for PCE-based

     Hernández-Sola, G.; Perello, J.; Agraz, F.; Spadaro, S.; Comellas, J.; Junyent, G.
    International Conference on Transparent Optical Networks
    p. 1-4
    Presentation's date: 2011-06-27
    Presentation of work at congresses
  • NORMA: Network Operator Revenues Maximization

     Velasco, L.; Ruiz, M.; Comellas, J.; Junyent, G.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2011.5970938
    Presentation's date: 2011-05-27
    Presentation of work at congresses
  • A feedback-based hybrid OBS/OCS architecture with fast-over-slow capability  Open access

     Sayyad, P.; Perello, J.; Spadaro, S.; Comellas, J.; Junyent, G.
    International Conference on Optical Network Design and Modeling
    Presentation's date: 2011-02-08
    Presentation of work at congresses
    Access to the full text
  • Service and resource differentiation in shared-path protection environments to maximize network operator's revenues  Open access

     Velasco, L.; Ruiz, M.; Perello, J.; Spadaro, S.; Comellas, J.
    Journal of optical communications and networking
    Vol. 3, num. 2, p. 117-126
    DOI: 10.1364/JOCN.3.000117
    Date of publication: 2011-02
    Journal article
    Access to the full text
  • GMPLS control plane network design with resilience guarantees

     Ruiz, M.; Perello, J.; Velasco, L.; Spadaro, S.; Comellas, J.; Junyent, G.
    Journal of lightwave technology
    Vol. 29, num. 1, p. 37-47
    DOI: 10.1109/JLT.2010.2090648
    Date of publication: 2011-01-01
    Journal article
  • Scalable hybrid path computation procedure for PCE-based multi-domain WSON networks

     Hernández-Sola, G.; Perello, J.; Agraz, F.; Spadaro, S.; Comellas, J.; Junyent, G.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2011.5970767
    Presentation's date: 2011
    Presentation of work at congresses
  • Deployment and validation of GMPLS-controlled multi-layer integrated routing over the ASON/GMPLS CARISMA test-bed

     Agraz, F.; Velasco, L.; Perello, J.; Ruiz, M.; Spadaro, S.; Junyent, G.; Comellas, J.
    Journal of networks
    Vol. 5, num. 11, p. 1321-1327
    DOI: 10.4304/jnw.5.11.1321-132
    Date of publication: 2010-11
    Journal article
  • Experimental UpdateLess Evolutive Routing

     Junyent, G.; Comellas, J.; Albert Cabellos-Aparicio; Careglio, D.; Perello, J.; Solé-Pareta, J.; Agraz, F.; Joan-Arinyo, R.; Spadaro, S.
    Competitive project
  • Scalable path computation flooding approach for PCE-based multi-domain networks

     Perello, J.; Hernández-Sola, G.; Agraz, F.; Spadaro, S.; Comellas, J.
    ETRI journal
    Vol. 32, num. 4, p. 622-625
    DOI: 10.4218/etrij.10.0210.0063
    Date of publication: 2010-08
    Journal article
  • projecte GEYSERS

     Spadaro, S.; Junyent, G.; Comellas, J.; Perello, J.
    Competitive project
  • Analysis of traffic engineering information dissemination strategies in PCE-based multi-domain optical networks  Open access

     Spadaro, S.; Perello, J.; Hernández-Sola, G.; Moreno, A.; Agraz, F.; Comellas, J.; Junyent, G.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2010.5549261
    Presentation's date: 2010-06-28
    Presentation of work at congresses
    Access to the full text
  • Performance evaluation of a hybrid OBS/OCS network with QoS differentiation based on packet loss/delay requirements  Open access

     Perello, J.; Guinea, N.; Spadaro, S.; Junyent, G.; Comellas, J.
    International Conference on Transparent Optical Networks
    p. 1-4
    DOI: 10.1109/ICTON.2010.5549287
    Presentation's date: 2010-06-28
    Presentation of work at congresses
    Access to the full text
  • Proceso de inversión de competencias genéricas en los nuevos planes de estudios de grado de la ETSETB de acuerdo con el modelo CDIO  Open access

     Bragos, R.; Alarcon, E.; Cabrera, M.; Calveras, A.; Comellas, J.; O'callaghan, J.; Pegueroles, J.; Prat, L.; Saez, G.; Sarda, J.; Sayrol, E.
    Congreso de Tecnologías Aplicadas a la Enseñanza de la Electrónica
    p. 1-9
    Presentation's date: 2010-04-13
    Presentation of work at congresses
    Access to the full text
  • Scalable, Tunable and Resilient Optical Networks Guaranteeing Extremely-high Speed Transport

     Spadaro, S.; Solé-Pareta, J.; Perello, J.; Careglio, D.; Velasco, L.; Ruiz, M.; Junyent, G.; Comellas, J.
    Competitive project
  • Mixed integration of CDIO skills into telecommunication engineering curricula

     Sayrol, E.; Bragos, R.; Alarcon, E.; Cabrera, M.; Calveras, A.; Comellas, J.; O'callaghan, J.; Pegueroles, J.; Pla, E.; Prat, L.; Saez, G.; Sarda, J.; Tallon, C.
    Elektronika ir elektrotechnika
    Vol. 6, num. 102, p. 127-130
    Date of publication: 2010
    Journal article