Ara es mostren els items 43-62 de 75

    • Matrix completion and extrapolation via kernel regression 

      Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria; Giannakis, Georgios B. (2019-10-01)
      Article
      Accés obert
      Matrix completion and extrapolation (MCEX) are dealt with here over reproducing kernel Hilbert spaces (RKHSs) in order to account for prior information present in the available data. Aiming at a fast and low-complexity ...
    • 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)
      Comunicació de congrés
      Accés obert
      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
      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 ...
    • 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)
      Text en actes de congrés
      Accés obert
      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 (Universidad de Valencia, 1994)
      Text en actes de congrés
      Accés obert
    • 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)
      Text en actes de congrés
      Accés obert
    • Multitone tracking with coupled EKFs and high order learning 

      Lagunas Hernandez, Miguel A.; Pagès Zamora, Alba Maria (1992)
      Text en actes de congrés
      Accés obert
      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)
      Text en actes de congrés
      Accés obert
      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)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      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 ...
    • Order estimation via matrix completion for multi-switch antenna selection 

      Garg, Vaibhav; Pagès Zamora, Alba Maria; Santamaria Caballero, Ignacio (Institute of Electrical and Electronics Engineers (IEEE), 2021-10-01)
      Article
      Accés obert
      This letter addresses the problem of order estimation for uniform linear arrays (ULAs) with multi-switch antenna selection in the small-sample regime. Multi-switch antenna selection results in a data matrix with missing ...
    • 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 ...
    • Passive sampling in reproducing kernel Hilbert spaces using leverage scores 

      Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria; Santamaria Caballero, Ignacio (2022-10-01)
      Article
      Accés restringit per política de l'editorial
      This paper deals with the selection of the training dataset in kernel-based methods for function reconstruction, with a focus on kernel ridge regression. A functional analysis is performed which, in the absence of noise, ...
    • 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
    • Portable kit for detecting trapped and buried people in ruins and avalanches, RESCUECELL: D6.1 Report of final validation in collapsed structures 

      Giménez Febrer, Pedro Juan; Pagès Zamora, Alba Maria (2015-01-22)
      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: D6.1 Report of final validation in collapsed structures.
    • Quantum multiple hypothesis testing based on a sequential discarding scheme 

      Pérez Guijarro, Jordi; Pagès Zamora, Alba Maria; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2022-01-14)
      Article
      Accés obert
      We consider the quantum multiple hypothesis testing problem, focusing on the case of hypothesis represented by pure states. A sequential adaptive algorithm is derived and analyzed first. This strategy exhibits a decay rate ...
    • Random-Walk laplacian for frequency analysis in periodic graphs 

      Boukrab, Rachid; Pagès Zamora, Alba Maria (Multidisciplinary Digital Publishing Institute (MDPI), 2021-02-11)
      Article
      Accés obert
      This paper presents the benefits of using the random-walk normalized Laplacian matrix as a graph-shift operator and defines the frequencies of a graph by the eigenvalues of this matrix. A criterion to order these frequencies ...
    • 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 ...
    • Real deployment of consensus algorithm on self-organized wireless sensor networks 

      Brahim, Elbhiri; Pagès Zamora, Alba Maria; Aboutajdine, Driss (2009)
      Text en actes de congrés
      Accés obert
      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 ...
    • REAVALUACIÓ 

      Nájar Martón, Montserrat; Pagès Zamora, Alba Maria; Riba Sagarra, Jaume; Vázquez Grau, Gregorio (Universitat Politècnica de Catalunya, 2022-07-05)
      Examen
      Accés restringit a la comunitat UPC
    • Robust clustering of data collected via crowdsourcing 

      Pagès Zamora, Alba Maria; Giannakis, Georgios B.; López Valcarce, Roberto; Giménez Febrer, Pedro Juan (2017)
      Text en actes de congrés
      Accés obert
      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 ...