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Ara es mostren els items 133-152 de 201

    • MAC-PHY enhancement for 802.11b WLAN systems via cross-layering 

      Alonso Zárate, Luis Gonzaga; Ferrús Ferré, Ramón Antonio; Agustí Comes, Ramon (Institute of Electrical and Electronics Engineers (IEEE), 2003)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      The paper analyses the performance of a novel MAC-PHY scheme for wireless local area networks (WLAN) that makes use of distributed queues and cross-layer concepts to improve radio channel utilisation. Analytical values for ...

    • 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 ...

    • Massive access in the random access channel of LTE for M2M communications: an energy perspective 

      Laya, Andrés; Alonso-Zárate, Jesús; Alonso Zárate, Luis Gonzaga; Chatzimisios, Periklis (2015)
      Text en actes de congrés
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      The capacity limits of the Random Access Channel (RACH) of Long Term Evolution (LTE) for highly dense Machineto-Machine communications are studied in this paper. We consider the case study when a high number of devices ...

    • Model based compressed sensing reconstruction algorithms for ECG telemonitoring in WBANs 

      Lalos, Aristeidis; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014-12-01)
      Article
      Accés restringit per política de l'editorial
      Wireless Body area networks (WBANs) consist of sensors that continuously monitor and transmit real time vital signals to a nearby coordinator and then to a remote terminal via the Internet. One of the most important signals ...

    • Modeling and analysis of reservation frame slotted-ALOHA in wireless machine-to-machine area networks for data collection 

      Vázquez-Gallego, Francisco; Alonso Zárate, Luis Gonzaga; Alonso-Zárate, Jesús (2015-02-09)
      Article
      Accés obert
      Reservation frame slotted-ALOHA (RFSA) was proposed in the past to manage the access to the wireless channel when devices generate long messages fragmented into small packets. In this paper, we consider an M2M area network ...

    • MQ primavera 2018 

      Alonso Zárate, Luis Gonzaga (Universitat Politècnica de Catalunya, 2018-04-03)
      Examen
      Accés restringit a la comunitat UPC

    • MQ tardor 2018 

      Alonso Zárate, Luis Gonzaga (Universitat Politècnica de Catalunya, 2018-11-05)
      Examen
      Accés restringit a la comunitat UPC

    • 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-radio cooperative retransmission scheme for reliable machine-to-machine multicast services 

      Laya Romero, Andrés Ernesto; Wang, Kun; Alonso Zárate, Luis Gonzaga; Alonso Zárate, Jesús (IEEE, 2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Mobile Machine-to-Machine (M2M) market is expected to grow dramatically in the upcoming years; predictions agree that the majority of wireless traffic will correspond to this type of communication. M2M devices deployed in ...

    • 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 ...

    • Multicast performance bounds exploiting cooperative physical layer network coding 

      Miliotis, Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2012)
      Text en actes de congrés
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      In this paper we exploit the characteristics of Physical layer Network Coding (PNC) in multicast short range networks. We present a scalable scenario of partially overlapping short range networks, where collisions are ...

    • 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 ...

    • NCMOB-MAC: a network coding-based MAC protocol with mobility support 

      Torres, Pol; Antonopoulos, Angelos; Alonso Zárate, Luis Gonzaga; Schulte, Gerrit (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      In this paper, a novel Network Coding (NC)-aided Medium Access Control (MAC) protocol with mobility support (NCMOB-MAC) is presented. The proposed protocol is compatible with Automatic Repeat reQuest (ARQ) techniques ...

    • Network planning for 802.11ad and MT-MAC 60 GHz fiber-wireless gigabit wireless local area networks over passive optical networks 

      Kalfas, George; Pleros, Nikos; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (Institute of Electrical and Electronics Engineers (IEEE), 2016-04)
      Article
      Accés obert
      We present a study concerning the network planning of 60 GHz gigabit wireless local area networks (WLANs) over existing passive optical network (PON) infrastructures. Two fiber-wireless configurations for gigabit WLAN ...

    • Non-saturation delay analysis of medium transparent MAC protocol for 5G 60GHz fiber-wireless towards 5G mmWave networks 

      Kalfas, George; Vardakas, John S.; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos; Pleros, Nikos (2017-07-04)
      Article
      Accés obert
      In this paper we demonstrate an analytical model for computing the end to end packet delay of a converged Optical/Wireless 60GHz Radio-over-Fiber (RoF) network operating under the Medium-Transparent MAC (MT-MAC) protocol. ...

    • Novel QoS scheduling and energy-saving MAC protocol for body sensor networks optimization 

      Otal, Begonya; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2010)
      Text en actes de congrés
      Accés obert

    • Offloading with IFOM: the uplink case 

      Miliotis, Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Mobile data offloading has been proposed as a solution for network congestion. However, the majority of the state-of-the-art is focused on the downlink offloading, while the change of mobile user habits, like mobile content ...

    • 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 ...