Exploració per autor "Silva Pereira, Silvana"
Ara es mostren els items 1-16 de 16
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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'editorialWe 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'editorialWe 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 obertA 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'editorialIn 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 obertThis 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 obertWireless 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'editorialThis 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'editorialWe 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 obertThe 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'editorialDoubly-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 confidencialitatThis 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 obertDistributed 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 obertWe 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'editorialRESCUECELL. 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 obertThe 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