Now showing items 1-20 of 40

    • A refinement of expurgation 

      Cocco, Giuseppe; Font Segura, Josep; Guillén i Fàbregas, Albert (Institute of Electrical and Electronics Engineers (IEEE), 2024-04-17)
      Article
      Open Access
      We show that for a wide range of channels and code ensembles with pairwise-independent codewords, with probability tending to 1 with the code length, expurgating an arbitrarily small fraction of codewords from a randomly ...
    • A vulnerability factor for ECC-protected memory 

      Jaulmes, Luc; Moretó 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 ...
    • Additive MDS Codes 

      Gamboa Quintero, Guillermo Andres (Universitat Politècnica de Catalunya, 2020-10)
      Master thesis
      Restricted access - author's decision
      In this master thesis, we present examples of additive nonlinear MDS codes over nonprime fields. Moreover, we prove the MDS conjecture for additive nonlinear codes for the alphabets F9 and F16, preserving linearity over ...
    • Analysis the use of large language model for automated program repair 

      Torrens Punsola, Marc (Universitat Politècnica de Catalunya, 2023-06-29)
      Bachelor thesis
      Restricted access - confidentiality agreement
      Automated program repair (APR) is a research field that develops multiple techniques to fix software bugs automatically. For a long time, the proposed solutions were based on heuristics and patterns, but since the appearance ...
    • 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
      Open Access
      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 ...
    • Codes correcteurs d’erreurs pour un système de télérelevé entre compteurs électriques 

      Ruiz del Rio, Patricia (Universitat Politècnica de Catalunya, 2009)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      Covenantee:   École nationale supérieure des télécommunications de Bretagne / Itron
      Deux systèmes de communications à des bandes de fréquences de 915MHz et 2.4GHz sont étudiés dans ce document. Tout d’abord une étude bibliographique de certains codes correcteurs d’erreurs a été effectuée afin de présenter ...
    • 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 ...
    • Determining when a truncated generalised Reed-Solomon code is Hermitian self-orthogonal 

      Ball, Simeon Michael; Vilar Algueró, Ricard (Institute of Electrical and Electronics Engineers (IEEE), 2022-02-09)
      Article
      Open Access
      We prove that there is a Hermitian self-orthogonal k -dimensional truncated generalised Reed-Solomon code of length n¿q2 over Fq2 if and only if there is a polynomial g¿Fq2 of degree at most (q-k)q-1 such that g+gq has ...
    • 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 ...
    • Disseny i desenvolupament d'una eina per gestionar la deteccio d'errors existents en el codi i analisi de la seva categoritzacio 

      Areal Azuara, Joan (Universitat Politècnica de Catalunya, 2024-01-24)
      Bachelor thesis
      Open Access
      Aquest document constitueix la memòria del projecte de Grau en Enginyeria Informàtica realitzat a la Facultat d'Informàtica de Barcelona. El projecte té com a objectiu el disseny, especificació i implementació d'una eina ...
    • 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
    • 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; Casas, Marc; Moretó 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 ...
    • Exploiting asynchrony from exact forward recovery for DUE in iterative solvers 

      Jaulmes, Luc; Casas, Marc; Moretó Planas, Miquel; Ayguadé Parra, Eduard; Labarta Mancho, Jesús José; Valero Cortés, Mateo (2015)
      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 ...
    • 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 ...
    • Frameproof codes, separable codes and B2 codes: bounds and constructions 

      Fernández Muñoz, Marcel; Livieratos, John; Martín Mollevi, Sebastià (Springer, 2023-11-10)
      Article
      Open Access
      In this paper, constructions of frameproof codes, separable codes, and B2 codes are obtained. For each family of codes, the Lovász Local Lemmais used to establish lower bounds for the codes. The obtained bounds match all ...
    • Generalized perfect codes for symmetric classical-quantum channels 

      Blasco Coll, Andreu; Vázquez Vilar, Gonzalo; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2022-09)
      Article
      Open Access
      We define a new family of codes for symmetric classical-quantum channels and establish their optimality. To this end, we extend the classical notion of generalized perfect and quasi-perfect codes to channels defined over ...
    • 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 ...
    • Grassl–Rötteler cyclic and consta-cyclic MDS codes are generalised Reed–Solomon codes 

      Ball, Simeon Michael (Springer, 2022-12-31)
      Article
      Open Access
      We prove that the cyclic and constacyclic codes constructed by Grassl and Rötteler in International Symposium on Information Theory (ISIT), pp. 1104–1108 (2015) are generalised Reed–Solomon codes. This note can be considered ...