Now showing items 1-16 of 16

    • Energy and spectrum efficient user association in 5G heterogeneous networks 

      Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      Due to the dense small cell deployment to cope with the increased data traffic of fifth generation (5G) networks, the direct backhaul (BH) connection of all small cells to the core network becomes challenging. To that end, ...
    • Energy and spectrum efficient user association in millimeter wave backhaul small cell networks 

      Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Di Renzo, Marco; Verikoukis, Christos (2017-02)
      Article
      Open Access
      Macrocells are expected to be densely overlaid by small cells (SCs) to meet increasing capacity demands. Due to their dense deployment, some SCs will not be connected directly to the core network, and thus, they may forward ...
    • Energy efficiency analysis of secondary networks in cognitive radio systems 

      Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2013)
      Conference report
      Restricted access - publisher's policy
      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 efficient line-of-sight millimeter wave small cell backhaul: 60, 70, 80 or 140 GHz? 

      Mesodiakaki, Agapi; Kassler, Andreas; Zola, Enrica Valeria; Ferndahl, Mattias; Cai, Tao (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      Spectrum scarcity together with high capacity demands make the use of millimeter wave (mmWave) frequencies an interesting alternative for next generation, i.e., fifth generation (5G), networks. Although mmWave is expected ...
    • 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)
      Conference report
      Restricted access - publisher's policy
      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-and spectrum-efficient user association in millimeter-wave backhaul small-cell networks 

      Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; di Renzo, Marco; Verikoukis, Christos (2017-02-01)
      Article
      Open Access
      Macrocells are expected to be densely overlaid by small cells (SCs) to meet increasing capacity demands. Due to their dense deployment, some SCs will not be connected directly to the core network, and thus, they may forward ...
    • Energy-efficient contention-aware channel selection in cognitive radio Ad-Hoc networks 

      Mesodiakaki, Agapi; Adelantado, Ferran; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2012)
      Conference report
      Restricted access - publisher's policy
      In this paper, we propose a novel contention-aware channel selection algorithm that focuses on throughput and energy efficiency improvement in Cognitive Radio Ad-Hoc Networks (CRAHNs). Specifically, we study the operation ...
    • Energy-efficient context-aware user association for outdoor small cell heterogeneous networks 

      Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
      Conference report
      Restricted access - publisher's policy
      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
      Restricted access - publisher's policy
      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 ...
    • Exploiting cognition for energy and spectrum efficient wireless networks 

      Mesodiakaki, Agapi (Universitat Politècnica de Catalunya, 2015-11-09)
      Doctoral thesis
      Open Access
      The main objective of this thesis is to propose and evaluate medium access layer algorithms, that will exploit different types of cognition to provide energy and spectrum efficiency enhancement. In particular, two main ...
    • Joint uplink and downlink cell selection in cognitive small cell heterogeneous networks 

      Mesodiakaki, Agapi; Adelantado Freixer, Ferran; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
      Conference report
      Restricted access - publisher's policy
      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, ...
    • Joint user association and backhaul routing for green 5G mesh millimeter wave backhaul networks 

      Mesodiakaki, Agapi; Zola, Enrica Valeria; Kassler, Andreas (2017)
      Conference report
      Restricted access - publisher's policy
      With the advance of fifth generation (5G) networks, network density needs to grow significantly in order to meet the required capacity demands. A massive deployment of small cells may lead to a high cost for providing fiber ...
    • Optimal user association, backhaul routing and switching off in 5G heterogeneous networks with mesh millimeter wave backhaul links 

      Mesodiakaki, Agapi; Zola, Enrica Valeria; Santos, Ricardo; Kassler, Andreas (Elsevier, 2018-05-26)
      Article
      Open Access
      Next generation, i.e., fifth generation (5G), cellular networks will provide a significant higher capacity per area to support the ever-increasing traffic demands. In order to achieve that, many small cells need to be ...
    • Performance analysis of a cognitive radio contention-aware channel selection algorithm 

      Mesodiakaki, Agapi (2015-07)
      Article
      Open Access
      In cognitive radio (CR) networks, due to the ever increasing traffic demands and the limited spectrum resources, it is very likely for several secondary networks (SNs) to coexist and opportunistically use the same primary ...
    • User association in 5G heterogeneous networks with mesh millimeter wave backhaul links 

      Mesodiakaki, Agapi; Zola, Enrica Valeria; Kassler, Andreas (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Open Access
      Fifth generation (5G) wireless networks will target at energy and spectrum efficient solutions to cope with the increasing demands in capacity and energy efficiency. To achieve this joint goal, dense networks of small ...
    • WSN4QoL: WSNs for remote patient monitoring in e-Health applications 

      Tennina, Stefano; Santos, Manuel; Mesodiakaki, Agapi; Mekikis, Prodromos Vasileios; Antonopoulos, Angelos; di Renzo, Marco; Stavridis, Athanasios; Graziosi, Fabio; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Restricted access - publisher's policy
      Contemporary technologies as implemented in the field of healthcare have provided the everyday clinical practice with a plethora of tools to be used in various settings. In this field, distributed and networked embedded ...