Ara es mostren els items 51-70 de 73

    • Machine-to-machine (M2M) communications for e-health applications 

      Kartsakli, Elli; Lalos, Aristeidis; Antonopoulos, Angelos; Tennina, Stefano; Di Renzo, Marco; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Elsevier, 2015)
      Capítol de llibre
      Accés obert
      The emerging technology of machine-to-machine (M2M) communications is bringing a paradigm shift in healthcare delivery. A broad range of e-health applications can be conceived, with considerable benefits for both patients ...
    • Multi-radio cooperative ARQ in wireless cellular networks: a MAC layer perspective 

      Alonso Zárate, Jesús; Kartsakli, Elli; Katz, Marcos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2011-05)
      Article
      Accés obert
      Multi-Radio Cooperative Automatic Retransmission Request (MCARQ) schemes are introduced in this paper within the context of hybrid networks which combine long-range and short-range communications. Since the number ...
    • Multi-tenant slicing for spectrum management on the road to 5G 

      Vincenzi, Matteo; Antonopoulos, Angelos; Kartsakli, Elli; Vardakas, John S.; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2017-10-01)
      Article
      Accés obert
      The explosive data traffic demand in the context of the 5G revolution has stressed the need for network capacity increase. As the network densification has almost reached its limits, mobile network operators are motivated ...
    • Multiobjective auction-based switching-off scheme in heterogeneous networks: to bid or not to bid? 

      Bousia, Alexandra; Kartsakli, Elli; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2016-11-01)
      Article
      Accés obert
      The emerging data traffic demand has caused a massive deployment of network infrastructure, including Base Stations (BSs) and Small Cells (SCs), leading to increased energy consumption and expenditures. However, the network ...
    • Multiuser MAC protocols for 802.11n wireless networks 

      Kartsakli, Elli; Zorba Barah, Nizar; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2009)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The emerging 802.11n standard establishes the integration of MIMO technology in WLANs with the goal of achieving high data rates. However there are still many open issues regarding MAC protocol design for MIMO based systems, ...
    • Multiuser MAC schemes for high-throughput IEEE 802.11n/ac WLANs 

      Kartsakli, Elli; Zorba, Nizar; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (InTech, 2013-12)
      Capítol de llibre
      Accés obert
      In the last decade, the Wireless Local Area Network (WLAN) market has been experiencing an impressive growth that began with the broad acceptance of the IEEE 802.11 standard [1]. Given the widespread deployment of WLANs ...
    • On the feasibility of Bluetooth, Zigbee and IEEE 802.15.4 technologies on board high speed trains 

      Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Valenzuela González, José Luis; Alonso Zárate, Luis Gonzaga (2011)
      Text en actes de congrés
      Accés obert
      This paper studies the feasibility of using low-power wireless technologies such as Bluetooth, IEEE 802.15.4 and ZigBee in high-speed railway scenarios that involve bidirectional land-to-train communication. The presented ...
    • Opportunistic scheduling using an enhanced channel state information update scheme for WLAN systems with DQCA 

      Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Valenzuela González, José Luis; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2007)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This paper studies the feasibility of using low-power wireless technologies such as Bluetooth, IEEE 802.15.4 and ZigBee in high-speed railway scenarios that involve bidirectional ground-to-train communication. The presented ...
    • Performance analysis of a cluster-based MAC protocol for wireless ad hoc networks 

      Alonso Zárate, Jesús; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2010)
      Article
      Accés obert
    • Performance enhancement of DQMAN-based wireless ad hoc networks in multi-hop scenarios 

      Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2008-05-31)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      Two mechanisms to improve the performance of wireless ad hoc networks in multi-hop scenarios wherein the distributed queuing MAC protocol for mobile ad hoc networks (DQMAN) is executed are proposed and evaluated in this ...
    • Performance evaluation of a medium access control protocol for a distributed ARQ scheme in cooperative wireless networks 

      Alonso Zárate, Jesús; Giotis, P; Kartsakli, Elli; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2008-06-30)
      Comunicació de congrés
      Accés obert
      A performance evaluation of a medium access control protocol for a distributed ARQ scheme in cooperative wireless networks is presented in this paper. The protocol under evaluation is the Persistent Relay Carrier Sensing ...
    • Persistent RCSMA: a MAC protocol for a distributed cooperative ARQ scheme in wireless networks 

      Alonso-Zárate, Jesús; Kartsakli, Elli; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (HINDAWI, 2008-04-09)
      Article
      Accés obert
      The persistent relay carrier sensing multiple access (PRCSMA) protocol is presented in this paper as a novel medium access control (MAC) protocol that allows for the execution of a distributed cooperative automatic ...
    • QoS guarantee for wireless LAN with heterogeneous traffic 

      Alonso Zárate, Luis Gonzaga; Kartsakli, Elli; Alonso Zárate, Jesús; Verikoukis, Christos (2009)
      Text en actes de congrés
      Accés obert
      Distributed Queuing Collision Avoidance (DQCA) is an efficient MAC protocol designed for infrastructure Wireless LANs. In this paper, four algorithms are proposed that alter the FIFO scheduling order of DQCA in order to ...
    • QoS-Aware energy management in body sensor nodes powered by human energy harvesting 

      Ibarra, Ernesto; Antonopoulos, Angelos; Kartsakli, Elli; Rodrigues, Joel; Verikoukis, Christos (2016-01-15)
      Article
      Accés obert
      Harvesting energy in the human environment has been identified as an effective way to charge the body sensor nodes in wireless body area networks (WBANs). In such networks, the capability of the nodes to detect events is ...
    • Reliable MAC design for ambient assisted living: moving the coordination to the cloud 

      Kartsakli, Elli; Antonopoulos, Angelos; Lalos, Aristeidis; Tennina, Stefano; Di Renzo, Marco; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2015-01)
      Article
      Accés restringit per política de l'editorial
      Ambient Assisted Living (AAL) technologies constitute a new paradigm that promises quality of life enhancements in chronic-care patients and elderly people. From a communication perspective, they involve heterogeneous ...
    • RLNC-aided cooperative compressed sensing for energy efficient vital signal telemonitoring 

      Lalos, Aristeidis; Antonopoulos, Angelos; Kartsakli, Elli; Di Renzo, Marco; Tennina, Stefano; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2015-07-01)
      Article
      Accés obert
      Wireless body area networks (WBANs) are composed of sensors that either monitor and transmit vital signals or act as relays that forward the received data to a body node coordinator (BNC). In this paper, we introduce an ...
    • Saturation throughput analysis of a passive cluster-based medium access control protocol for ad hoc wireless networks 

      Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Cateura Díaz, Alex; Alonso Zárate, Luis Gonzaga (2008)
      Text en actes de congrés
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      Several clustering algorithms have been proposed during the last decade within the context of ad hoc and sensor networks. They allow adding some organization to an otherwise disorganized network. Although the virtual ...
    • Sharing the small cells for energy efficient networking: how much does it cost? 

      Bousia, Alexandra; Kartsakli, Elli; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      The explosive data traffic demands stress the need for additional capacity in cellular systems, which can be achieved through the exploitation of Small Cells (SCs). However, the deployment of SCs implies higher energy ...
    • Stochastic modeling of wireless charged wearables for reliable health monitoring in hospital environments 

      Mekikis, Prodromos Vasileios; Antonopoulos, Angelos; Kartsakli, Elli; Passas, Nikos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      As wearables provide new health-related functionalities, they can be employed in hospitals to monitor patients and notify the medical personnel regarding their status. However, in order to be approved by the medical ...
    • Throughput analysis of a medium access control protocol for a distributed cooperative ARQ scheme in wireless networks 

      Alonso Zárate, Jesús; Kartsakli, Elli; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (2008)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      A throughput analysis of the Persistent Relay Carrier Sensing Multiple Access (PRCSMA) protocol is presented in this paper. The protocol has been designed to execute a cooperative ARQ (C-ARQ) scheme in wireless networks. ...