Now showing items 1-16 of 16

  • Array codes and graph decompositions 

    Vilar Algueró, Ricard (Universitat Politècnica de Catalunya, 2019-01)
    Bachelor thesis
    Open Access
    Array codes are intended to correct bursts of errors in communication through noisy channels. As in regular codes there is a notion of maximum distance separating (MDS) array codes. A so-called Perfect One-Factorization ...
  • Asymptotic MAP upper bounds for LDPC codes 

    Matas Navarro, David; Lamarca Orozco, M. Meritxell (Institute of Electrical and Electronics Engineers (IEEE), 2016)
    Conference report
    Restricted access - publisher's policy
    This paper aims at computing tight upper bounds for the maximum a posteriori threshold of low-density parity check codes in the asymptotic blocklength regime for the transmission over binary-input memoryless symmetricoutput ...
  • A vulnerability factor for ECC-protected memory 

    Jaulmes, Luc Etienne; Moreto Planas, Miquel; Valero Cortés, Mateo; Casas, Marc (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    Fault injection studies and vulnerability analyses have been used to estimate the reliability of data structures in memory. We survey these metrics and look at their adequacy to describe the data stored in ECC-protected ...
  • Decodificación de canal asistida por protocolo 

    Moreno Lozano, Daniel (Universitat Politècnica de Catalunya, 2016)
    Master thesis (pre-Bologna period)
    Open Access
    This document describes how the channel decoder at Physical layer of a communication system can benefit from information brought either by careful examination of the standard, or by already received packets. In all ...
  • Development and evaluation in AVInspector 

    Soler Garcia, José Alberto (Universitat Politècnica de Catalunya, 2011-12-20)
    Bachelor thesis
    Restricted access - author's decision
    AVInspector is a software developed at Fraunhofer IDMT that allows analysis and detection of audio and video errors. The software consists of several independent modules for every kind of error and a GUI which manages the ...
  • Error estimation and quality control 

    Díez, Pedro; Parés Mariné, Núria; Huerta, Antonio (John Wiley & sons, 2010-12-15)
    Part of book or chapter of book
    Restricted access - publisher's policy
  • Étude d’un émetteur-récepteur faster-than-Nyquist de faible complexité pour les communications par satellite 

    Abelló Barberán, Albert (Universitat Politècnica de Catalunya, 2015-10-01)
    Master thesis (pre-Bologna period)
    Open Access
    Covenantee:  Institut Supérieur de l'Aéronautique et de l'Espace
    Capacity increase in satelite communications systems is nowadays a main concern. In order to increase the spectral efficiency of such systems, a research topic consists in specifying non-orthogonal modulations called ...
  • Evaluating built-in ECC of FPGA on-chip memories for the mitigation of undervolting faults 

    Salami, Behzad; Unsal, Osman Sabri; Cristal Kestelman, Adrián (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference report
    Open Access
    Voltage underscaling below the nominal level is an effective solution for improving energy efficiency in digital circuits, e.g., Field Programmable Gate Arrays (FPGAs). However, further undervolting below a safe voltage ...
  • Exploiting asynchrony from exact forward recovery for DUE in iterative solvers 

    Jaulmes, Luc Etienne; Casas Guix, Marc; Moreto Planas, Miquel; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (2015)
    External research report
    Open Access
    This paper presents a method to protect iterative solvers from Detected and Uncorrected Errors (DUE) relying on error detection techniques already available in commodity hardware. Detection operates at the memory page ...
  • Exploiting asynchrony from exact forward recovery for DUE in iterative solvers 

    Jaulmes, Luc Etienne; Casas Guix, Marc; Moreto Planas, Miquel; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (Association for Computing Machinery (ACM), 2015)
    Conference report
    Open Access
    This paper presents a method to protect iterative solvers from Detected and Uncorrected Errors (DUE) relying on error detection techniques already available in commodity hardware. Detection operates at the memory page ...
  • Goal-oriented h-adaptivity for the Helmholtz equation: error estimates, local indicators and refinement strategies 

    Steffens, Lindaura; Parés Mariné, Núria; Díez, Pedro (2011-01-14)
    Article
    Open Access
    This paper introduces a new goal-oriented adaptive technique based on a simple and effective post-process of the finite element approximations. The goal-oriented character of the estimate is achieved by analyzing both the ...
  • Maximum distance separable codes 

    Albanell Sarroca, Elisabeth (Universitat Politècnica de Catalunya, 2014-10)
    Bachelor thesis
    Open Access
    The focus of this bachelor thesis are maximum distance separable codes. A code is used to communicate over noise channel so any interferences that may occur can be detected and corrected. Maximum distance separable codes ...
  • Optimization of Random Linear Network Coding protocols for multipath communications in heterogeneous networks 

    Costa Sala, Clara (Universitat Politècnica de Catalunya, 2019-04-25)
    Bachelor thesis
    Open Access
    Covenantee:  Technische Universität Dresden
    In the next upcoming mobile generation era (5G), the demands for high-data-rate transmissions is predicted to grow considerably. Among new studies focused on how to support such demands, Random Linear Network Coding (RLNC) ...
  • Performance of direct-oversampling correlator-type receivers in chaos-based DS-CDMA systems over frequency non-selective fading channels 

    Nguyen, Xuan Quyen; Barlet Ros, Pere (2017-03-08)
    Article
    Open Access
    In this paper, we present a study on the performance of direct-oversampling correlator-type receivers in chaos-based direct-sequence code division multiple access systems over frequency non-selective fading channels. At ...
  • State estimation and decoupling of unknown inputs in uncertain LPV systems using interval observers 

    Rotondo, Damiano; Cristofaro, Andrea; Johansen, Tor Arne; Nejjari Akhi-Elarab, Fatiha; Puig Cayuela, Vicenç (2017-06-13)
    Article
    Open Access
    This paper proposes a linear parameter varying (LPV) interval observer for state estimation and unknown inputs decoupling in uncertain continuous-time LPV systems. Two different problems are considered and solved: (1) the ...
  • Use of Turbo Codes with Low-Rate Convolutional Constituent Codes in Fingerprinting Scenarios 

    Tomás Buliart, Joan; Gómez Muro, Ana; Fernández Muñoz, Marcel; Soriano Ibáñez, Miguel (IEEE, 2011)
    Conference lecture
    Restricted access - publisher's policy
    We discuss the use of turbo codes in fingerprinting schemes. More precisely, we present a family of turbo codes that are secure against attacking coalitions of size 2. This family is build upon a class of low-rate convolutional ...