Now showing items 1-20 of 72

  • A cloud-assisted random linear network coding medium access control protocol for healthcare applications 

    Kartsakli, Elli; Antonopoulos, Angelos; Alonso, Luis; Verikoukis, Christos (MDPI, 2014-03-10)
    Article
    Open Access
    Relay sensor networks are often employed in end-to-end healthcare applications to facilitate the information flow between patient worn sensors and the medical data center. Medium access control (MAC) protocols, based on ...
  • A cloud-assisted random linear network coding medium access control protocol for healthcare applications 

    Kartsakli, Elli; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014-03)
    Article
    Open Access
    Relay sensor networks are often employed in end-to-end healthcare applications to facilitate the information flow between patient worn sensors and the medical data center. Medium access control (MAC) protocols, based on ...
  • A cross-layer scheduling algorithm for DQCA-based WLAN systems with heterogeneous voice-data traffic 

    Kartsakli, Elli; Cateura, Alex; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (ieee, 2005-09-30)
    Conference lecture
    Restricted access - publisher's policy
    This paper proposes a cross-layer priority-based scheduling algorithm for WLAN systems using the DQCA MAC protocol where heterogeneous voice-data traffic is present. In this algorithm voice users have always the highest ...
  • A near-optimum cross-layered distributed queuing protocol for wireless LAN: medium access control protocols for wireless LANs 

    Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Cateura Díaz, Alejandro; Alonso Zárate, Luis Gonzaga (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2008-02)
    Article
    Open Access
    Distributed Queuing Collision Avoidance (DQCA) is a distributed MAC protocol for WLAN systems that offers near optimum performance. The protocol implements a reservation scheme that ensures collision-free data transmissions ...
  • An energy efficient protocol architecture for m-Health systems 

    Tennina, Stefano; Kartsakli, Elli; Graziosi, Fabio; Santos, Manuel; Lalos, Aristeidis; Antonopoulos, Angelos; Mekikis, Prodromos Vasileios; Di Renzo, Marco; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
    Conference report
    Restricted access - publisher's policy
    Contemporary technologies as implemented in the field of health care have provided the everyday clinical practice with a plethora of tools to be used in various settings. However, from all established and emerging applications, ...
  • An experimental study of multi-radio platform coexistence in the 5 GHz band for railway applications 

    Vlad, Adrián; Hierro, José; González, Jesús; Martinez, R.; Navarro, Isabel; Higuera Portilla, Jorge Eduardo; Kartsakli, Elli; Collado Gómez, Juan Carlos; González Arbesú, José María; Alonso Zárate, Luis Gonzaga; Valenzuela González, José Luis; Laya Romero, Andrés Ernesto; Flores, Enrique (Springer Verlag, 2011)
    Conference report
    Restricted access - publisher's policy
    This paper studies the practical challenges that arise due to the coexistence of two wireless technologies, both operating in the license-exempt 5 GHz band. In particular, WiFi and WiMAX equipment have been used in the ...
  • A novel near-optimum medium acces control protocol for a distributed cooperative ARQ scheme in wireless networks 

    Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2008-09-30)
    Conference lecture
    Restricted access - publisher's policy
    The distributed queuing MAC protocol for cooperative networks (DQCOOP) is presented in this paper as an innovative MAC protocol designed to coordinate the relay retransmissions in a cooperative automatic retransmission ...
  • A protocol architecture for energy efficient and pervasive eHealth systems 

    Tennina, Stefano; Di Renzo, Marco; Kartsakli, Elli; Graziosi, Fabio; Lalos, Aris S.; Antonopoulos, Angelos; Mekikis, Prodromos Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2014)
    Conference report
    Restricted access - publisher's policy
    The design of new and more pervasive healthcare systems has been fostered by the increased expectancy of life in the coming years. In this field, distributed and networked wireless embedded systems, such as Wireless Sensor ...
  • A survey on M2M systems for mHealth: a wireless communications perspective 

    Kartsakli, Elli; Lalos, Aristeidis; Antonopoulos, Angelos; Tennina, Stefano; Di Renzo, Marco; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014-10-01)
    Article
    Open Access
    In the new era of connectivity, marked by the explosive number of wireless electronic devices and the need for smart and pervasive applications, Machine-to-Machine (M2M) communications are an emerging technology that enables ...
  • A threshold-selective multiuser downlink MAC scheme for 802.11n wireless networks 

    Kartsakli, Elli; Zorba, Nizar; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2010)
    Conference report
    Open Access
  • Auction-based offloading for base station switching off in Heterogeneous Networks 

    Bousia, Alexandra; Kartsakli, Elli; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    The emerging traffic demand has triggered an impressive deployment of network infrastructure, including macro Base Stations (BSs) and Small Cells (SCs), leading to increased energy consumption and expenditures. However, ...
  • Coexistence of a novel medium access control protocol for wireless ad hoc networks and the IEEE 802.11 

    Alonso Zárate, Jesús; Verikoukis, Christos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga (2010)
    Conference report
    Open Access
  • Communication recovery with emergency aerial networks 

    Mekikis, Prodromos Vasileios; Antonopoulos, Angelos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2017-08-01)
    Article
    Open Access
    In spite of the significant advancements in wireless connectivity, the static form of the network infrastructure cannot guarantee an uninterrupted operation of the ever-growing wireless consumer electronics in emergency ...
  • Connectivity analysis in clustered wireless sensor networks powered by solar energy 

    Mekikis, Prodromos Vasileios; Kartsakli, Elli; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2018-04)
    Article
    Open Access
    Emerging 5G communication paradigms, such as machine-type communication, have triggered an explosion in ad-hoc applications that require connectivity among the nodes of wireless networks. Ensuring a reliable network operation ...
  • Connectivity analysis in wireless-powered sensor networks with battery-less devices 

    Mekikis, Prodromos Vasileios; Antonopoulos, Angelos; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    The emerging Internet of Things paradigm has triggered an explosion in ad-hoc applications that require connectivity among the nodes of wireless networks. However, the channel randomness and the random deployment of such ...
  • Connectivity of large-scale WSNs in fading environments under different routing Mechanisms 

    Antonopoulos, Angelos; Alonso, Luis; Verikoukis, Christos; Lalos, Aris S.; Mekikis, Prodromos-Vasileios; Kartsakli, Elli (Institute of Electrical and Electronic Engineers, 2015-06-12)
    Conference lecture
    Open Access
    As the number of nodes in wireless sensor networks (WSNs) increases, new challenges have to be faced in order to maintain their performance. A fundamental requirement of several applications is the correct transmission of ...
  • Connectivity of large-scale WSNs in fading environments under different routing mechanisms 

    Mekikis, Prodromos Vasileios; Kartsakli, Elli; Lalos, Aristeidis; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2015)
    Conference report
    Restricted access - publisher's policy
    As the number of nodes in wireless sensor networks (WSNs) increases, new challenges have to be faced in order to maintain their performance. A fundamental requirement of several applications is the correct transmission of ...
  • Cooperation incentives for multi-operator C-RAN energy efficient sharing 

    Vincenzi, Matteo; Antonopoulos, Angelos; Kartsakli, Elli; Vardakas, John; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Restricted access - publisher's policy
    Facing the increasing energy demands associated with the perspective of fifth generation (5G) wireless networks, the Mobile Network Operators (MNOs) are motivated to gradually convert their traditional Radio Access Network ...
  • Cooperative ARQ: a medium access control (MAC) layer perspective 

    Alonso Zárate, Jesús; Kartsakli, Elli; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (INTECH, 2010)
    Part of book or chapter of book
    Open Access
  • Cooperative compressed sensing schemes for telemonitoring of vital signals in WBANs 

    Lalos, Aristeidis; Kartsakli, Elli; Antonopoulos, Angelos; Tennina, Stefano; Di Renzo, Marco; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
    Conference report
    Restricted access - publisher's policy
    Wireless Body Area Networks (WBANs) are composed of various sensors that either monitor and transmit real time vital signals or act as relays that forward the received data packets to a nearby Body Node Coordinator (BNC). ...