Ara es mostren els items 1-16 de 16

    • A diffusion-based distributed EM algorithm for density estimation in wireless sensor networks 

      Silva Pereira, Silvana; López Valcarce, Roberto; Pagès Zamora, Alba Maria (Institute of Electrical and Electronics Engineers (IEEE), 2013)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We address the problem of distributed estimation of a parameter from a set of noisy observations collected by a sensor network, assuming that some sensors may be subject to data failures and report only noise. In such ...
    • A diffusion-based em algorithm for distributed estimation in unreliable sensor networks 

      Silva Pereira, Silvana; López Valcarce, Roberto; Pagès Zamora, Alba Maria (2013-01)
      Article
      Accés restringit per política de l'editorial
      We address the problem of distributed estimation of a parameter from a set of noisy observations collected by a sensor network, assuming that some sensors may be subject to data failures and report only noise. In such ...
    • Consensus for distributed EM-based clustering in WSNs 

      Silva Pereira, Silvana; Barbarossa, Sergio; Pagès Zamora, Alba Maria (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
      Comunicació de congrés
      Accés obert
      A distributed EM algorithm with consensus is proposed for density estimation and clustering using WSNs in the presence of mixtures of Gaussians. The EM algorithm is a general framework for maximum likelihood estimation in ...
    • Consensus in random WSNs with correlated symmetric links 

      Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2011)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      In this paper we study the convergence of consensus algorithms in wireless sensor networks with random topologies and instantaneous symmetric links which exist with different probabilities independently in time but correlated ...
    • Distributed AOA-based source positioning in NLOS with sensor networks 

      Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria; Silva Pereira, Silvana; López Valcarce, Roberto (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Comunicació de congrés
      Accés obert
      This paper focuses on the problem of positioning a source using angle-of-arrival measurements taken by a wireless sensor network in which some of the nodes experience non lineof-sight (LOS) propagation conditions. In ...
    • Distributed consensus algorithms for wireless sensor networks: convergence analysis and optimization 

      Silva Pereira, Silvana (Universitat Politècnica de Catalunya, 2012-01-26)
      Tesi
      Accés obert
      Wireless sensor networks are developed to monitor areas of interest with the purpose of estimating physical parameters or/and detecting emergency events in a variety of military and civil applications. A wireless sensor ...
    • Distributed TLS estimation under random data faults 

      Silva Pereira, Silvana; Pagès Zamora, Alba Maria; López Valcarce, Roberto (Institute of Electrical and Electronics Engineers (IEEE), 2015)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper addresses the problem of distributed estimation of a parameter vector in the presence of noisy input and noisy output data, as well as data faults, performed by a wireless sensor network in which only local ...
    • Distributed Total Least Squares estimation over networks 

      López Valcarce, Roberto; Silva Pereira, Silvana; Pagès Zamora, Alba Maria (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      We consider Total Least Squares (TLS) estimation in a network in which each node has access to a subset of equations of an overdetermined linear system. Previous distributed approaches require that the number of equations ...
    • Fast mean square convergence of consensus algorithms in WSNs with random topologies 

      Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2009)
      Comunicació de congrés
      Accés obert
      The average consensus in wireless sensor networks is achieved under assumptions of symmetric or balanced topology at every time instant. However, communication and/or node failures, as well as node mobility or changes in ...
    • How to implement doubly-stochastic matrices for consensus-based distributed algorithms 

      Valcarcel Macua, Sergio; Moreno Leon, Carlos; Samuel Romero, Jhoan; Silva Pereira, Silvana; Zazo Muncharaz, Javier; Pagès Zamora, Alba Maria; López Valcarce, Roberto; Zazo Bello, Santiago (Institute of Electrical and Electronics Engineers (IEEE), 2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Doubly-stochastic matrices are usually required by consensus-based distributed algorithms. We propose a simple and efficient protocol and present some guidelines for implementing doubly-stochastic combination matrices even ...
    • IST-033914-WINSOC: D4.4 System level network performance evaluation 

      de Marinis, Enrico; Pagès Zamora, Alba Maria; Silva Pereira, Silvana; Yovanof, Gregory S.; Pediaditaki, Dimosthenis; Hasler, Martin; Alireza, Khadivi; Leonidas, Georgopoulos (2009-04-17)
      Report de recerca
      Accés restringit per acord de confidencialitat
      This document constitutes the final outcome of the activities carried out in the WINSOC WP4, along with the interactions of this WP with WP3 and WP2. Although one objective of WP4 is to provide indications to the project ...
    • Mean square convergence of consensus algorithms in random WSNs 

      Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2010-05)
      Article
      Accés obert
      Distributed consensus algorithms for estimation of parameters or detection of events in wireless sensor networks have attracted considerable attention in recent years. A necessary condition to achieve a consensus on the ...
    • Parameter estimation in wireless sensor networks with faulty transducers: a distributed EM approach 

      Silva Pereira, Silvana; López Valcarce, Roberto; Pagès Zamora, Alba Maria (2018-03-01)
      Article
      Accés obert
      We address the problem of distributed estimation of a vector-valued parameter performed by a wireless sensor network in the presence of noisy observations which may be unreliable due to faulty transducers. The proposed ...
    • Portable kit for detecting trapped and buried people in ruins and avalanches, RESCUECELL: D2.3 Report and source code of final MT location 

      Silva Pereira, Silvana; Giménez Febrer, Pedro Juan; Fontdevila Olivé, Roger; Atzeni, Italo; Pagès Zamora, Alba Maria; Vidal Manzano, José (2014-04-29)
      Report de recerca
      Accés restringit per política de l'editorial
      RESCUECELL. Seventh Framework Programme Research for the Benefit of the SMEs. Grant Agreement Number 315007 Deliverable: D2.3 Report and source code of final MT location
    • Randomized transmission power for accelerated consensus in asymmetric WSNs 

      Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2009)
      Text en actes de congrés
      Accés obert
      The total energy consumed in a wireless sensor network until reaching a consensus is proportional to the product of the sum of the transmission power of each node and the convergence time. In a network where the nodes are ...
    • When gossip meets consensus : convergence in correlated random WSNs 

      Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2011)
      Text en actes de congrés
      Accés obert