Now showing items 21-40 of 47

  • Fast mean square convergence of consensus algorithms in WSNs with random topologies 

    Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2009)
    Conference lecture
    Open Access
    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 ...
  • Fourier models for non linear signal processing 

    Pagès Zamora, Alba Maria; Lagunas Hernandez, Miguel A. (1999-12)
    Article
    Restricted access - publisher's policy
    This paper proposes a trigonometric functional extension, hereafter named the Fourier model, as an alternative framework to the Volterra approach for non-linear systems modelling. This work is focused on the general ...
  • High-SNR analytical performance of spatial multiplexing MIMO systems with CSI 

    García Ordoñez, Luis; Palomar, Daniel P.; Pagès Zamora, Alba Maria; Rodríguez Fonollosa, Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2007-11-30)
    Article
    Open Access
    In this paper, we investigate the average and outage performance of spatial multiplexing multiple-input multiple-output (MIMO) systems with channel state information at both sides of the link. Such systems result, for ...
  • HISPANET: a digital television/multimedia payload 

    Sala Álvarez, José; Sergio, Calvo; Pagès Zamora, Alba Maria; Vázquez Grau, Gregorio; Riba Sagarra, Jaume (European Spatial Agengy (ESA), 1998)
    Conference report
    Open Access
  • 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)
    Conference report
    Restricted access - publisher's policy
    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 ...
  • Joint probability density function estimation by spectral estimate methods 

    Pagès Zamora, Alba Maria; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 1996)
    Conference report
    Open Access
    The estimation of probability density functions (PDFs) of a given random variable (r.v.) is involved in topics related to codification, speech or whenever a short record of data is available but a greater amount is needed. ...
  • Learning from unequally reliable blind ensembles of classifiers 

    Traganitis, Panagiotis; Pagès Zamora, Alba Maria; Giannakis, Georgios B. (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference report
    Open Access
    The rising interest in pattern recognition and data analytics has spurred the development of a plethora of machine learning algorithms and tools. However, as each algorithm has its strengths and weaknesses, one is motivated ...
  • Matrix completion of noisy graph signals via proximal gradient minimization 

    Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria (Institute of Electrical and Electronics Engineers (IEEE), 2017)
    Conference lecture
    Open Access
    This paper takes on the problem of recovering the missing entries of an incomplete matrix, which is known as matrix completion, when the columns of the matrix are signals that lie on a graph and the available observations ...
  • Mean square convergence of consensus algorithms in random WSNs 

    Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2010-05)
    Article
    Open Access
    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 ...
  • Memoryless predistortion of nonlinear amplifiers based on Fourier series based models 

    Pagès Zamora, Alba Maria; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 1996)
    Conference report
    Open Access
    In order to maximise the efficiency of the RF amplifier located in a transmitter, for instance in both analog and digital terrestrial TV links, it is forced to work near saturation thus introducing an undesirable nonlinear ...
  • Muestreo aleatorio en frecuencia aplicado a la identificación de sistemas no lineales 

    Pagès Zamora, Alba Maria; Nájar Martón, Montserrat; Pérez Neira, Ana Isabel (Universitat Politècnica de València, 1993)
    Conference report
    Open Access
  • Muestreo aleatorio en frecuencia aplicado a la identificación de sistemas no lineales 

    Pagès Zamora, Alba Maria; Nájar Martón, Montserrat; Pérez Neira, Ana Isabel (Universidad de Valencia, 1994)
    Conference report
    Open Access
  • Multitone tracking with coupled EKFs and high order learning 

    Lagunas Hernandez, Miguel A.; Pagès Zamora, Alba Maria (1992)
    Conference report
    Open Access
    A multitone tracker is described using two basic principles in optimum frequency estimation: processing bandwidth depending on the distance from the estimate to the actual frequency values, and parallel estimates with ...
  • Nonlinear system inversion applied to random variable generation 

    Pagès Zamora, Alba Maria; Lagunas Hernandez, Miguel A.; Mestre Pons, Francesc X. (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Conference report
    Open Access
    A method to design random variable (RV) generators with the same probability density function (PDF) as a given RV record is presented. The resulting RV generator is a nonlinear system that when driven by a uniformly ...
  • Online EM-based distributed estimation in sensor networks with faulty nodes 

    Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria; López Valcarce, Roberto (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference lecture
    Restricted access - publisher's policy
    This paper focuses on the problem of the distributed estimation of a parameter vector based on noisy observations regularly acquired by the nodes of a wireless sensor network and assuming that some of the nodes have faulty ...
  • 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
    Open Access
    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 ...
  • Randomized transmission power for accelerated consensus in asymmetric WSNs 

    Silva Pereira, Silvana; Pagès Zamora, Alba Maria (2009)
    Conference report
    Open Access
    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 ...
  • Real deployment of consensus algorithm on self-organized wireless sensor networks 

    Brahim, Elbhiri; Pagès Zamora, Alba Maria; Aboutajdine, Driss (2009)
    Conference report
    Open Access
    Reaching consensus on a self-organized wireless sensor networks through totally decentralized algorithms is a topic that has attracted considerable attention. The average consensus method is the most popular algorithm ...
  • Robust clustering of data collected via crowdsourcing 

    Pagès Zamora, Alba Maria; Giannakis, Georgios B.; López Valcarce, Roberto; Giménez Febrer, Pedro Juan (2017)
    Conference report
    Open Access
    Crowdsourcing approaches rely on the collection of multiple individuals to solve problems that require analysis of large data sets in a timely accurate manner. The inexperience of participants or annotators motivates well ...
  • Stochastic and balanced distributed energy-efficient clustering (SBDEEC) for heterogeneous wireless sensor networks 

    Brahim, Elbhiri; Rachid, Saadane; Pagès Zamora, Alba Maria; Aboutajdine, Driss (2009-09-23)
    Article
    Open Access
    Typically, a wireless sensor network contains an important number of inexpensive power constrained sensors which collect data from the environment and transmit them towards the base station in a cooperative way. Saving ...