Exploració per tema "MAC"

Ara es mostren els items 10-29 de 39

    • Decodificación de canal asistida por protocolo 

      Moreno Lozano, Daniel (Universitat Politècnica de Catalunya, 2016)
      Projecte/Treball Final de Carrera
      Accés obert
      This document describes how the channel decoder at Physical layer of a communication system can benefit from information brought either by careful examination of the standard, or by already received packets. In all ...

    • Desenvolupament d’un sistema de transmissio sense fils basat en DQ 

      Bardina Fons, Oriol (Universitat Politècnica de Catalunya, 2014-05-29)
      Projecte/Treball Final de Carrera
      Accés obert
      DQ is a high performance access protocol for wireless communications networks which reaches collision-free data transmissions by gathering the random access requests in a small time window and completely avoiding the ...

    • Design, implementation, and verification of an FPGA-based control system for a permanent-magnet motor drive built upon a three-phase four-level active-clamped inverter 

      García Rojas, Gabriel (Universitat Politècnica de Catalunya, 2015-05)
      Projecte Final de Màster Oficial
      Accés obert
      [ANGLÈS] The present work summarizes the work and knowledge acquired by the author during its Master’s Thesis in the Research Group in Power Electronics, GREP. The development is based on the Multilevel Active-Clamped (MAC) ...

    • Duo-MAC: Energy and time constrained data delivery MAC protocol in wireless sensor networks 

      Doudou, Messaoud; Alaei, Mohammad; Djenouri, Djamel; Barceló Ordinas, José María; Badache, Nadjib (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We present Duo-MAC, an asynchronous cascading wake-up scheduled MAC protocol for heterogeneous traffic forwarding in low-power wireless networks. Duo-MAC deals with energy-delay minimization problem and copes with transmission ...

    • Enhancement proposal for WLAN IEEE 802.11e: desynchronization of its working procedure 

      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
      Up to the present, several studies have been performed in order to provide prioritization of stations or classes of service for WLAN IEEE 802.11. The IEEE 802.11e draft specification aims to extend the original IEEE 802.11 ...

    • Evaluación de IEEE 802.11g en un entorno celular exterior 

      López Aguilera, M. Elena; Casademont Serra, Jordi; Cotrina Navau, Josep (2004-11)
      Text en actes de congrés
      Accés obert
      La mayoría de estudios que se encargan de analizar el comportamiento de IEEE 802.11 se encuentran limitados a entornos unicelulares. Sin embargo, la idea de diseñar una red celular basada en IEEE 802.11 resulta muy ...

    • Evaluación de protocolos MAC cooperativos para sistemas de transmisión inalámbricos 

      Cepedello Cepedello, Angel (Universitat Politècnica de Catalunya, 2010-04-21)
      Treball Final de Grau
      Accés obert

    • Evaluating wireless LAN access methods in presence of transmission errors 

      López Aguilera, M. Elena; Heusse, Martin; Rousseau, Franck; Duda, Andrzej; Casademont Serra, Jordi (Institute of Electrical and Electronics Engineers, 2006-04)
      Text en actes de congrés
      Accés obert
      Several modifications of the IEEE 802.11 DCF access method have been proposed recently to improve the performance of wireless LANs. Up to now, such proposals have only been compared under ideal channel conditions. In this ...

    • eVTOL aircraft concept - Wing and canard study and design 

      Von Arend Sallarés, Guillermo (Universitat Politècnica de Catalunya, 2023-02-14)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   ONAerospace
      The evolution of urban air mobility is pushing the boundaries of air transportation as we currently know it: in the forthcoming years, the first iterations of personal air vehicles will emerge, making air travel cheaper ...

    • Fairness enhancement in a self-configuring cluster-based wireless ad hoc network 

      Alonso Zárate, Jesús; Verikoukis, Christos; Alonso Zárate, Luis Gonzaga (Institute of Electrical and Electronics Engineers (IEEE), 2005)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this paper we analyze an unfairness problem arisen when implementing the self-configuring clusterbased DQCA AD HOC MAC protocol in a near-static topology. When there is a low relative mobility among terminals and ...

    • HEH-BMAC: hybrid polling MAC protocol for WBANs operated by human energy harvesting 

      Ibarra, Ernesto; Antonopoulos, Angelos; Kartsakli, Elli; Verikoukis, Christos (2015-02-01)
      Article
      Accés obert
      This paper introduces human energy harvesting medium access control (MAC) protocol (HEH-BMAC), a hybrid polling MAC suitable for wireless body area networks powered by human energy harvesting. The proposed protocol combines ...

    • Implementación de un protocolo MAC multisalto de bajo consumo para redes de sensores inalámbricos 

      Corral Blanch, Víctor (Universitat Politècnica de Catalunya, 2011-02-24)
      Projecte/Treball Final de Carrera
      Accés obert
      Català: Les xarxes de sensors sense fil comencen a convertir-se en quelcom habitual dins les noves tendències d'investigació, degut al gran nombre d'aplicacions que tenen. Aquests dispositius funcionen generalment amb ...

    • Implementación del protocolo DPCF en motas inalámbricas y estudio de su eficiencia energética 

      Balboteo Toledano, Iván (Universitat Politècnica de Catalunya, 2012-05-08)
      Treball Final de Grau
      Accés obert
      La mayoría de dispositivos inalámbricos que operan con el estándar IEEE 802.15.4 implementan el método CSMA/CA no ranurado como protocolo de acceso al medio (MAC). Este protocolo ofrece un buen rendimiento para bajas cargas ...

    • Integración de protocolos de acceso avanzados en redes WLAN IEEE 802.11 

      Crespo Cintas, Cristian (Universitat Politècnica de Catalunya, 2008-07-21)
      Projecte/Treball Final de Carrera
      Accés obert
      Las redes móviles ad hoc (MANETs) son redes inalámbricas distribuidas sin infraestructura formadas por un conjunto de dispositivos inalámbricos móviles. La ausencia de una entidad centralizada encargada de la gestión de ...

    • Interference cancellation and network coding for underwater communication systems 

      Palacios Trujillo, Raúl (Universitat Politècnica de Catalunya, 2010-06-21)
      Projecte Final de Màster Oficial
      Accés obert

    • LAMAN: Load adaptable MAC for ad-hoc networks 

      Pérez Neira, Ana Isabel; Realp, Marc (2005)
      Article
      Accés restringit per política de l'editorial
      In mobile ad hoc radio networks, mechanisms on how to access the radio channel are extremely important in order to improve network efficiency. In this paper, the load adaptable medium access control for ad hoc networks ...

    • Medium Access Protocol for AmBC 

      Puerto Martínez, Miquel (Universitat Politècnica de Catalunya, 2023-07-12)
      Projecte Final de Màster Oficial
      Accés obert
      This thesis will study different medium access techniques for Ambient Backscatter Communications (AmBC), which takes profit of the ambient RF signals in the environment to enable wireless devices communicate and harvest ...

    • Multicast performance bounds exploiting cooperative physical layer network coding 

      Miliotis, Vasileios; Alonso Zárate, Luis Gonzaga; Verikoukis, Christos (2012)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      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 ...

    • 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 ...