• Energy efficiency analysis of secondary networks in cognitive radio systems 

    Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2013)
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    In this paper, we evaluate a novel contention-aware channel selection algorithm that focuses on energy efficiency improvement of a secondary network (SN) in a scenario where other non-cooperating SNs are also using the ...
  • Energy impact of outdoor small cell backhaul in green heterogeneous networks 

    Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Antonopoulos, Angelos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
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    Small cells (SCs) are expected to be densely deployed during the next few years to enhance the network capacity of future heterogeneous networks (HetNets). Due to their dense deployment, not all SCs are expected to have a ...
  • Energy-efficient context-aware user association for outdoor small cell heterogeneous networks 

    Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
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    To meet the ever-increasing traffic demands, future cellular networks are about to include a plethora of small cells (SCs), with user equipments (UEs) being able of communicating via multiple bands. Given that SCs are ...
  • Energy-efficient user association in cognitive heterogeneous networks 

    Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014-07)
    Article
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    Due to the ever increasing data traffic demands, which are directly connected to increased energy consumption, it becomes challenging for operators to achieve capacity enhancement while limiting their electric bill. To ...
  • Joint uplink and downlink cell selection in cognitive small cell heterogeneous networks 

    Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
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    In the next few years, small cells (SCs) are about to be densely deployed to achieve sustainable capacity enhancement. Due to the expected high SC density, some SCs will not have a direct connection to the core network, ...
  • Nonuniform traffic distribution model in reverse link of multilaterate/multiservie WCDMA/based systems 

    Adelantado Freixer, Ferran; Pérez Romero, Jordi; Sallent Roig, José Oriol (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-09)
    Article
    Accés obert
    This paper focuses on the modeling of the reverse link of a wideband code division multiple access system in a nonhomogeneous environment with a single cell. Multiple traffic spatial and service nonuniformities are considered ...
  • Using simulation to provide alternative solutions to the flowshop sequencing problem 

    Juan Pérez, Angel Alejandro; Guix, Antoni; Adelantado Freixer, Ferran; Fonseca Casas, Pau; Ruiz García, Rubén (2010)
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    In this paper we present SS-GNEH, a simulation-based algorithm for the Permutation Flowshop Sequencing Problem (PFSP). Given a PFSP instance, the SSGNEH algorithm incorporates a randomness criterion to the classical NEH ...