Exploració per tema "MAC"
Ara es mostren els items 1-20 de 39
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A near-optimum cross-layered distributed queuing protocol for wireless LAN: medium access control protocols for wireless LANs
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2008-02)
Article
Accés obertDistributed 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 ... -
Análisis de técnicas de acceso al medio avanzadas basadas en colas distribuidas y mecanismos Cross-Layer para sistemas de comunicaciones inalámbricas
(Universitat Politècnica de Catalunya, 2007-12-19)
Projecte/Treball Final de Carrera
Accés obertEl uso de las redes inalámbricas 802.11 está en continua expansión en la actualidad. Este hecho provoca que cada vez se requiera un mayor control para garantizar una cierta calidad de servicio (QoS) en diferentes ... -
Análisis del protocolo IEEE 802.11b en un entorno celular
(Universidad de Las Palmas de Gran Canaria, Servicio de Publicaciones, 2003)
Text en actes de congrés
Accés obertIn this paper we present an analysis of the protocol IEEE 802.11b in different environments. Its performance in an indoor environment is evaluated, in terms of throughput and transmission delay, and the influence of the ... -
Application of the DQCA protocol to the optimization of wireless communications systems in cellular environments
(Universitat Politècnica de Catalunya, 2007-04-16)
Projecte/Treball Final de Carrera
Accés obertThis final career thesis (Master thesis) is a contribution on the enhancement of wireless communications, specifically WLAN multi-cell systems based on the IEEE 802.11 standard. The objectives were to propose and study ... -
Architectures and protocols for sub-wavelength optical networks: contributions to connectionless and connection-oriented data transport
(Universitat Politècnica de Catalunya, 2011-10-07)
Tesi
Accés obertLa ràpida evolució d’Internet i l’àmplia gamma de noves aplicacions (per exemple, multimèdia, videoconferència, jocs en línia, etc.) ha fomentat canvis revolucionaris en la manera com ens comuniquem. A més, algunes d’aquestes ... -
Brief announcement: Game theoretical approach for energy-delay balancing in distributed duty-cycled MAC protocols of wireless networks
(Association for Computing Machinery (ACM), 2014)
Text en actes de congrés
Accés obertOptimizing energy consumption and end-to-end (e2e) packet delay in energy constrained distributed wireless networks is a conflicting multi-objective optimization problem. This paper investigates this trade-off from a ... -
Channel access unfairness of wireless LAN access methods
(Institute of Electrical and Electronics Engineers, 2006-06)
Text en actes de congrés
Accés obertIn this paper, we present an evaluation of chosen wireless LAN access methods involving stations with different bit error rates: n - 1 stations in ideal transmission conditions (BER = 0) and 1 station with a given bit error ... -
Comunicación inalámbrica ultrarrápida optimización de persistencia en protocolos MAC para redes inalámbricas en chips
(Universitat Politècnica de Catalunya, 2018-06)
Treball Final de Grau
Accés obertPersistence Optimization for MAC protocols in Wireless Networks on Chip. -
CooPNC: a cooperative multicast protocol exploiting physical layer network coding
(Elsevier, 2014-03)
Article
Accés restringit per política de l'editorialIn this paper we present a multicast protocol for short range networks that exploits the characteristics of physical layer network coding. In our proposed protocol, named CooPNC, we provide a novel cooperative approach ... -
Decodificación de canal asistida por protocolo
(Universitat Politècnica de Catalunya, 2016)
Projecte/Treball Final de Carrera
Accés obertThis 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
(Universitat Politècnica de Catalunya, 2014-05-29)
Projecte/Treball Final de Carrera
Accés obertDQ 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
(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
(Institute of Electrical and Electronics Engineers (IEEE), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialWe 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
(Institute of Electrical and Electronics Engineers, 2005)
Text en actes de congrés
Accés obertUp 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
(2004-11)
Text en actes de congrés
Accés obertLa 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
(Universitat Politècnica de Catalunya, 2010-04-21)
Treball Final de Grau
Accés obert -
Evaluating wireless LAN access methods in presence of transmission errors
(Institute of Electrical and Electronics Engineers, 2006-04)
Text en actes de congrés
Accés obertSeveral 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
(Universitat Politècnica de Catalunya, 2023-02-14)
Treball Final de Grau
Accés obert
Realitzat a/amb: ONAerospaceThe 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
(Institute of Electrical and Electronics Engineers (IEEE), 2005)
Comunicació de congrés
Accés restringit per política de l'editorialIn 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
(2015-02-01)
Article
Accés obertThis 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 ...