Now showing items 1-20 of 55

    • 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)
      Conference report
      Restricted access - publisher's policy
      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
      Restricted access - publisher's policy
      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 Game Theoretical algorithm for joint power and topology control in distributed WSN 

      Closas Gómez, Pau; Pagès Zamora, Alba Maria; Fernández Rubio, Juan Antonio (2009)
      Conference lecture
      Open Access
      In this paper, the issue of network topology control in wireless networks using a fully distributed algorithm is considered. Whereas the proposed distributed algorithm is designed applying game theory concepts to design ...
    • A novel architecture to model non-linear systems 

      Pagès Zamora, Alba Maria; Lagunas Hernandez, Miguel A. (1994)
      Conference report
      Open Access
      This paper shows a new architecture specially thought to model non-linear systems (NLSs). At first, it was applied only to memoryless systems but then it developed to solve a more general problem, NLSs with memory. The ...
    • Blind multiclass ensemble classification 

      Traganitis, Panagiotis; Pagès Zamora, Alba Maria; Giannakis, Georgios B. (2018)
      Article
      Open Access
      The rising interest in pattern recognition and data analytics has spurred the development of innovative machine learning algorithms and tools. However, as each algorithm has its strengths and limitations, one is motivated ...
    • Capacity of MIMO Channels: asymptotic evaluation under correlated fading 

      Mestre Pons, Francesc X.; Rodríguez Fonollosa, Javier; Pagès Zamora, Alba Maria (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2003-06-30)
      Article
      Open Access
      This paper investigates the asymptotic uniform power allocation capacity of frequency nonselective multiple-input multiple-output channels with fading correlation at either the transmitter or the receiver. We consider ...
    • 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)
      Conference lecture
      Open Access
      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)
      Conference lecture
      Restricted access - publisher's policy
      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 ...
    • Counting Malaria parasites with a two-stage EM based algorithm using crowdsourced data 

      Cabrera-Bean, Margarita; Pagès Zamora, Alba Maria; Diaz Vilor, Carles; Postigo Camps, Maria; Cuadrado Sánchez, Daniel; Luengo Oroz, Miguel Ángel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      Malaria eradication of the worldwide is currently one of the main WHO’s global goals. In this work, we focus on the use of human-machine interaction strategies for lowcost fast reliable malaria diagnostic based on a ...
    • D6.2 Report of Final validation in snow avalanches 

      Santiago Montilla, Leonardo Alberto; Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria (2015-04-10)
      External research report
      Open Access
      Once the RESCUECELL system was integrated, all the functionalities were tested in terms of accuracy, and performance under real scenarios in collapsed structures 1 and snow. For this purpose, a set of tests and ...
    • Design and implementation of a DVB on-Board multi-carrier demodulator 

      Sala Álvarez, José; Pagès Zamora, Alba Maria; Sergio, Calvo; Prat Gomà, Josep Joan (1998)
      Conference report
      Open Access
      A description of the signal processing stage of an on-board integrated VLSI multi-carrier demodulator at the demultiplexing level is presented, along with a description of the optimization procedure that has been developed ...
    • Desplegament de recursos en línea per a l’avaluació i l’autoaprenentage dels alumnes, i foment de l’especialització i competències transversals en el màster MERIT 

      Pradell i Cara, Lluís; Cardama Aznar, Ángel; Canal Bienzobas, Fernando; Jofre Roca, Lluís; Junyent Giralt, Gabriel; Herranz Luis, Jaime; Mallorquí Franquet, Jordi J.; Nadeu Camprubí, Climent; Pagès Zamora, Alba Maria; Pradell i Cara, Lluís; Rius Casals, Juan Manuel; Rodríguez Fonollosa, Javier; Romeu Robert, Jordi; Coderch Collell, Marcel; Kerans, Mary Ellen; Law, Carolyn; García Hernández, Antonio; Gutiérrez Martos, David; Hernández Bonet, Antoni; Ferrer Bosch, Anna; Pérez Trufero, Javier; Torre Lara, Jordi de la; Torres Matabosch, Núria (Universitat Politècnica de Catalunya. Institut de Ciències de l'Educació, 2010-02-11)
      Conference lecture / Conference report
      Open Access
      El projecte es desenvolupa en el marc de la titulació oficial de màster MERIT del Departament de Teoria del Senyal i Comunicacions. El màster, orientat a la recerca i integrat dins del programa Erasmus Mundus, presenta ...
    • 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)
      Conference lecture
      Open Access
      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 multivariate regression with unknown noise covariance in the presence of outliers: an MDL approach 

      López Valcarce, Roberto; Romero Gonzalez, Daniel; Sala Álvarez, José; Pagès Zamora, Alba Maria (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Conference report
      Open Access
      We consider the problem of estimating the coefficients in a multivariable linear model by means of a wireless sensor network which may be affected by anomalous measurements. The noise covariance matrices at the different ...
    • 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)
      Conference report
      Restricted access - publisher's policy
      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)
      Conference report
      Restricted access - publisher's policy
      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 ...
    • DOA estimation via shift-invariant matrix completion 

      Garg, Vaibhav; Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria; Santamaria Caballero, Ignacio (2021-06)
      Article
      Restricted access - confidentiality agreement
      This paper presents a method to estimate the direction of arrival (DOA) of multiple sources received by a uniform linear array (ULA) with a reduced number of radio-frequency (RF) chains. The receiving array relies on antenna ...
    • Efficient bit-level design of an on-board digital TV demultiplexer 

      Sala Álvarez, José; Pagès Zamora, Alba Maria; Vázquez Grau, Gregorio (1998)
      Conference report
      Open Access
      A bit-level description of the signal processing stage of an on-board integrated VLSI multi-carrier demodulator is presented in this paper, along with a description of the optimization procedure that has been developed for ...
    • Equalization of non-minimum phase channels with a non-linear architecture 

      Pagès Zamora, Alba Maria; Lagunas Hernandez, Miguel A. (1994)
      Conference report
      Open Access
      The equalization of non-minimum phase channels by means of a transversal filter becomes quite complicated when the real conditions are different from the ideal ones. The optimum delay that must be applied to the reference ...
    • Expectation–maximisation based distributed estimation in sensor networks 

      López Valcarce, Roberto; Pagès Zamora, Alba Maria (Institution of Engineering and Technology, 2019-03-01)
      Part of book or chapter of book
      Restricted access - publisher's policy
      Estimating the unknown parameters of a statistical model based on the observations collected by a sensor network is an important problem with application in multiple fields. In this setting, distributed processing, by which ...