Exploració per tema "IEEE 802.11 (Protocol)"

Ara es mostren els items 21-33 de 33

    • Localización en redes WLAN 802.11: desarrollo e implementación de una solución basada en traps SNMP 

      García Villegas, Eduard; Vidal Ferré, Rafael (Universidad de Las Palmas de Gran Canaria, Servicio de Publicaciones, 2003-09)
      Text en actes de congrés
      Accés obert
      The growth of WLANs and hence, the increase of mobile data terminals, bring about a visible proliferation of location-based services. This scenario also carries the need for location management systems that are device ...

    • Multiple lookup table predistortion for adaptive modulation 

      Gilabert Pinal, Pere Lluís; Bertran Albertí, Eduardo; Montoro López, Gabriel (Institute of Electrical and Electronics Engineers (IEEE), 2005-12)
      Article
      Accés obert
      This paper presents a multiple LUT digital adaptive predistorter based on a Hammerstein model that uses the return channel to feed back information from the receiver, concretely the bit error rate (BER), in order to ...

    • Multipolling and OFDMA Reservation Protocol for IEEE 802.11 Networks 

      Pérez Díaz de Cerio, David; Valenzuela González, José Luis; Villares Piera, Nemesio Javier (Institute of Electrical and Electronic Engineers, 2009)
      Text en actes de congrés
      Accés obert
      This paper presents an efficient multipolling scheme that improves the IEEE 802.11 MAC protocol efficiency and does not suffer from the hidden terminal problem or inefficient channel usage problems. To design an efficient ...

    • Outdoor IEEE 802.11g cellular network performance 

      López Aguilera, M. Elena; Casademont Serra, Jordi; Cotrina Navau, Josep (Institute of Electrical and Electronics Engineers, 2004)
      Text en actes de congrés
      Accés obert
      Most studies about the performance of IEEE 802.11 are limited to a single cell environment. Nevertheless, the idea of designing an outdoor cellular network based on WLAN IEEE 802.11 is very attractive, due to the several ...

    • Performance enhancement of outdoor IEEE 802.11 cellular networks 

      López Aguilera, M. Elena; Casademont Serra, Jordi; Rojas Espinosa, Alfonso; Cotrina Navau, Josep (ACTA Press, 2005-07)
      Text en actes de congrés
      Accés obert
      Most studies about the performance of IEEE 802.11 are limited to a single cell environment. Nevertheless, the idea of designing an outdoor cellular network based on WLAN IEEE 802.11 results very attractive, due to the ...

    • Performance enhancement of WLAN IEEE 802.11 for asymmetric traffic 

      López Aguilera, M. Elena; Casademont Serra, Jordi; Cotrina Navau, Josep; Rojas Espinosa, Alfonso (Institute of Electrical and Electronics Engineers, 2005)
      Text en actes de congrés
      Accés obert
      Most studies about the performance of IEEE 802.11 consider scenarios of ad-hoc topology and networks where all stations have the same traffic load (symmetric traffic conditions). This paper presents a study of performance ...

    • Seguridad en WLAN 802.11: evaluación de las contramedidas para combatir el ataque de falsificación 

      García Dueñas, Mireia (Universitat Politècnica de Catalunya, 2010-05-28)
      Treball Final de Grau
      Accés obert

    • Simulacions de xarxes IEEE 802.11 amb ns-3 

      Salvador Falumí, Lluís (Universitat Politècnica de Catalunya, 2009-07-23)
      Treball Final de Grau
      Accés obert

    • Simulation and Improvement of the Handover process in IEEE 802.11p based VANETs (Vehicle Ad-hoc NETworks) 

      Urmeneta Arbusa, Pablo (Universitat Politècnica de Catalunya, 2010-11)
      Projecte/Treball Final de Carrera
      Accés obert
      This research focuses on the study of the handover process and the di erent simulation environments available in order to generate valid results for the optimization of seamless handover in VANET networks. Handover ...

    • Sobre la justicia en las redes IEEE 802.11e: desincronización de su mecanismo de acceso al medio 

      López Aguilera, M. Elena; Casademont Serra, Jordi; Cotrina Navau, Josep (Institute of Electrical and Electronics Engineers, 2007-10)
      Article
      Accés obert
      Since the advent of the first IEEE 802.11 standard, several papers have proposed means of providing QoS to IEEE 802.11 networks and evaluate various traffic-prioritization mechanisms. Nevertheless, studies on the assignment ...

    • Study of asymmetric traffic influence on IEEE 802.11 WLAN family, enhancement proposals 

      López Aguilera, M. Elena; Casademont Serra, Jordi; Cotrina Navau, Josep (Institute of Electrical and Electronics Engineers, 2004-04)
      Text en actes de congrés
      Accés obert
      This paper is focused on the study of WLAN performance in IEEE 802.11 networks that are in a situation of asymmetric traffic, where the access point (AP) transmits much more than the user stations (US). This situation is ...

    • Transmit power control mechanisms in IEEE 802.11 cellular networks 

      López Aguilera, M. Elena; Casademont Serra, Jordi (Association for Computing Machinery, 2006)
      Text en actes de congrés
      Accés obert
      Actually, Wireless Local Area Networks (WLAN) are being extensively deployed in many places to provide easy access to Internet. Moreover, networks that span large buildings or campuses must comprise multiple cells. ...

    • Wireless technology applied to GIS 

      Casademont Serra, Jordi; López Aguilera, M. Elena; Paradells Aspas, Josep; Rojas Espinosa, Alfonso; Calveras Augé, Anna M.; Barceló Arroyo, Francisco; Cotrina Navau, Josep (Elsevier, 2004-07)
      Article
      Accés restringit per política de l'editorial
      At present, there is a growing interest in wireless applications, due to the fact that the technology begins to support them at reasonable costs. In this paper, we present the technology currently available for use in ...