Exploració per tema "Xarxes de comunicacions"
Ara es mostren els items 46-65 de 74
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MAC-PHY enhancement for 802.11b WLAN systems via cross-layering
(Institute of Electrical and Electronics Engineers (IEEE), 2003)
Comunicació de congrés
Accés restringit per política de l'editorialThe 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 ... -
Maximum Coverage at Minimum Cost for Multi-Domain IP/MPLS Networks
(IEEE Computer Society Publications, 2008)
Text en actes de congrés
Accés obertAt present, service providers have several incentives to extend the reach of long-lived MPLS paths across domains. Providers, however, will face a number of trade-offs while choosing the optimal set of MPLS paths to be ... -
Metaconsola para monitorización de infraestructuras y servicios
(Universitat Politècnica de Catalunya, 2016-10)
Projecte/Treball Final de Carrera
Accés restringit per acord de confidencialitat -
Migración de la red de comunicaciones de un cliente de servicios de red
(Universitat Politècnica de Catalunya, 2013-05-28)
Projecte Final de Màster Oficial
Accés restringit per decisió de l'autor[ANGLÈS] The study presents the migration of all communication networks by a company, from now on we will call ACME S.L. We will analyze the current network situation, the reasons for the change, we will gather the ... -
On the controller placement for designing a distributed SDN control layer
(Institute of Electrical and Electronics Engineers (IEEE), 2014)
Comunicació de congrés
Accés obertThe software-defined network (SDN) advocates a centralized network control, where a controller manages a network from a global view of the network. Large SDN networks may consist of multiple controllers or controller domains ... -
Opportunistic scheduling for WLAN systems using cross-layer techniques and a distributed MAC
(Institute of Electrical and Electronics Engineers (IEEE), 2005)
Comunicació de congrés
Accés restringit per política de l'editorialThis paper proposes a novel Cross-Layer optimization mechanism for WLAN systems and analyses its performance in terms of throughput and mean packet delay. The proposed scheme makes use of a MAC-PHY interaction and a ... -
Optimal MISO pre-equalization for filter bank multicarrier systems
(2009)
Text en actes de congrés
Accés restringit per política de l'editorialOne of the phenomena that degrades the performance of multicarrier modulation (MCM) systems is the spectral nulls that multipath channel may have. As a result, the affected subcarrier signals may be severely degraded ... -
Optimització de xarxes a partir del grau d'intermediació dels enllaços
(Universitat Politècnica de Catalunya, 2011-09-07)
Projecte/Treball Final de Carrera
Accés obertEnglish: In this project we study the optimization of a complex network based on the geographical length of the links and the number of geodesic paths that go through them (edge betweenness). By considering relevant ... -
Optimization of inter-domain presence traffic based on privacy rule sharing: performance and impact on the IMS
(2012)
Article
Accés restringit per política de l'editorialPresence information was the key enabler of the great success of instant messaging applications. This information was first limited to simple binary states such as online, offline, or busy. However, it is currently evolving ... -
Performace evaluation of geographic and topological routing protocols for Vehicular Ad.hoc Networks
(Universitat Politècnica de Catalunya, 2012-05-25)
Projecte/Treball Final de Carrera
Accés obert[ANGLÈS] VANETs (Vehicular Ad-hoc Networks) are an emerging new technology which integrates the capabilities of new generation wireless networks to vehicles. It includes a variety of applications such as co-operative traffic ... -
Performance evaluation of realistic scenarios for vehicular ad hoc networks with CityMob and NCTUns simulators
(Universitat Politècnica de Catalunya, 2011-06-16)
Projecte/Treball Final de Carrera
Accés obertCatalà: El continu creixement del parc automobilístic a nivell mundial ha obert noves oportunitats de negoci i noves necessitats de seguretat viària. La mobilitat constant dels individus i la necessitat d'estar sempre ... -
Performance evaluation of two-fuzzy based cluster head selection systems for wireless sensor networks
(2008-01-01)
Article
Accés obertSensor networks supported by recent technological advances in low power wireless communications along with silicon integration of various functionalities are emerging as a critically important computer class that enable ... -
Pico Cell Range Expansion toward LTE-Advanced Wireless Heterogeneous Networks
(Universitat Politècnica de Catalunya, 2013-01-14)
Projecte Final de Màster Oficial
Accés obert[ANGLÈS] Deploying low power nodes within a macro cell layout, also known as heterogeneous networks (HetNets), is a promising solution to enhance the global performance of LTE mobile communication systems and particularly ... -
Plantejament d'una solució per gestionar eficientment l'espectre en escenaris de Home Networking
(Universitat Politècnica de Catalunya, 2011-04-06)
Projecte/Treball Final de Carrera
Accés obertCatalà: En aquest projecte es realitza un estudi qualitatiu del grau de congestió i utilització de l'espectre radioelèctric en escenaris de Home Networking, a la vegada que es proposa una solució a aquesta problemàtica. -
Potential Theory for boundary value problems on finite networks
(2006-07)
Article
Accés obertWe aim here at analyzing self-adjoint boundary value problems on finite networks associated with positive semi-definite Schrödinger operators. In addition, we study the existence and uniqueness of solutions and its ... -
Proyecto de comunicación para las comunidades indígenas de Nicaragua
(Universitat Politècnica de Catalunya, 2009-01)
Projecte/Treball Final de Carrera
Accés obertPara el desarrollo de este proyecto se plantearon tres fases bien marcadas: 1ª Fase. Establecimiento de las necesidades de la red. • Realizar los primeros contactos con la contraparte y los beneficiarios directos del ... -
Random walks on temporal networks
(2012)
Article
Accés obertMany natural and artificial networks evolve in time. Nodes and connections appear and disappear at various time scales, and their dynamics has profound consequences for any processes in which they are involved. The first ... -
Robustness optimization via link additions
(Universitat Politècnica de Catalunya, 2009-07-13)
Projecte Final de Màster Oficial
Accés obertRobustness is the ability of networks to avoid malfunction. Networks could be subject to failures, viruses, removals of links and other attacks. There are several researches about how to measure or improve the ... -
RouteFlow: Migración al software defined networking
(Universitat Politècnica de Catalunya, 2016-06)
Treball Final de Grau
Accés obertThis project seeks to highlight what is the Software Defined Networking and which components form it. After the subject knowledge has been exposed, an application based in in software defined networks called RouteFlow will ... -
Security issues in Internet of Things
(Universitat Politècnica de Catalunya, 2017)
Projecte/Treball Final de Carrera
Accés obertThe main idea behind the concept of the Internet of Things (IoT) is to connect all kinds of everyday objects, thus enabling them to communicate to each other and enabling people to communicate to them. IoT is an extensive ...