Ara es mostren els items 1-16 de 16

  • Adaptive generalized space shift keying (GSSK) modulation for MISO channels: a new method for high diversity and coding gains 

    Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2012)
    Text en actes de congrés
    Accés obert
    Generalized Space Shift Keying (GSSK) modulation is a recently proposed low-complexity concept for Multiple-Input- Multiple-Output (MIMO) wireless systems. GSSK modulation is a generalized version of Space Shift Keying ...
  • Data compression for remote radio head 

    Mateu Cuadrat, Jaume (Universitat Politècnica de Catalunya, 2018-07-25)
    Treball Final de Grau
    Accés restringit per acord de confidencialitat
  • Deep learning for ultrasound data-rate reduction 

    Sainz Lorenzo, Yeray (Universitat Politècnica de Catalunya, 2019-02-19)
    Projecte Final de Màster Oficial
    Accés obert
    US devices generate a set of signals that are carried from a transducer probe to a computer for further processing in order to obtain images. Those signals are transmitted between both ends through a set of cables, making ...
  • Depth based image segmentation 

    Morera Trujillo, Jordi (Universitat Politècnica de Catalunya, 2017-10-18)
    Treball Final de Grau
    Accés obert
    En este trabajo de fin de grado se exploran distintas técnicas de aprendizaje profundo (deep learning) con el objetivo de obtener una segmentación de imagen basada en criterios de uniformidad. Estudiamos varios algoritmos ...
  • Distributed coding using punctured quasi-arithmetic codes for memory and memoryless sources 

    Malinowski, Simon; Artigas Roca, Javier; Guillemot, Christine; Torres Urgell, Lluís (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-10-01)
    Article
    Accés obert
    This correspondence considers the use of punctured quasi-arithmetic (QA) codes for the Slepian–Wolf problem. These entropy codes are defined by finite state machines for memoryless and first-order memory sources. ...
  • FAPEC integration as an HDF5 filter 

    Dueñas Pedrosa, Sergi (Universitat Politècnica de Catalunya, 2016-07)
    Projecte/Treball Final de Carrera
    Accés obert
    In this work we propose a solution to some of the problems found in supercomputing environments by combining an extremely efficient, standard, open-source data manager suite with a high-performance data compressor. We do ...
  • Image data compression with hierarchical pixel averaging and fully adaptive prediction error coder 

    Iudica, Riccardo; Artigues, Gabriel; Portell, Jordi; García-Berro Montilla, Enrique (2015-06-04)
    Article
    Accés obert
    The fully adaptive prediction error coder (FAPEC) is an entropy coder that typically offers better results than the adaptive Rice compressor. It uses basic preprocessing stages such as delta preprocessing, but it can also ...
  • NDA waveform estimation in the low-SNR regime 

    López Salcedo, José Antonio; Vázquez Grau, Gregorio (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERING INC, 2007-12)
    Article
    Accés obert
    This correspondence addresses the problem of nondata-aided waveform estimation for digital communications. Based on the unconditional maximum likelihood criterion, the main contribution of this correspondence is the ...
  • Optimal pilot design and power control in correlated MISO links 

    Pastore, Adriano; Rodríguez Fonollosa, Javier (2012)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    We study the maximization of an achievable ergodic rate expression of a multiple-input single-output (MISO) channel where both ends are cognizant of the same erroneous estimate of the current fading state, yet they have ...
  • Real-time lossless compression of multibeam echosounder water column data 

    Amblas, David; Portell de Mora, Jordi; Rayo, Xavier; Villafranca, Alberto G.; García-Berro Montilla, Enrique; Canals, Miquel (SARTI, 2016)
    Comunicació de congrés
    Accés obert
    Multibeam echosounders can generate vast amounts of data when recording the complete water column, which poses logistic, economic and technical challenges. Lossy data compression can reduce data size up to one or two ...
  • Robust LPC vector quantization based on kohonen's design algorithm 

    Rodríguez Fonollosa, José Adrián; Masgrau Gómez, Enrique José; Moreno Bilbao, M. Asunción (Elsevier, 1990)
    Text en actes de congrés
    Accés obert
  • Specific distance for feature selection in speech recognition 

    Lleida Solano, Eduardo; Nadeu Camprubí, Climent; Mariño Acebal, José Bernardo; Monte Moreno, Enrique; Moreno Bilbao, M. Asunción (Springer, 1990)
    Text en actes de congrés
    Accés obert
    In this paper, the use of a specific metric as a feature selection step is investigated. The feature selection step tries to model the correlation among adjacent feature vectors and the variability of the speech. We propose ...
  • Study of the video transport in ultra high definition format 

    Serra Font, Anna (Universitat Politècnica de Catalunya, 2015-09-14)
    Projecte/Treball Final de Carrera
    Accés restringit per acord de confidencialitat
  • Time-Sensitive egocentric image retrieval for finding objects in Lifelogs 

    Reyes Rodriguez, Cristian (Universitat Politècnica de Catalunya, 2016)
    Treball Final de Grau
    Accés obert
    Realitzat a/amb:  Dublin City University
    This work explores diverse practices for conducting an object search from large amounts of egocentric images taking into account their temporal information. The application of this technology is to identify where personal ...
  • 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)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    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 ...
  • XML compression algorithms benchmark on ARINC 633 data 

    Gasparín Forné, Ana (Universitat Politècnica de Catalunya, 2014-04-23)
    Projecte/Treball Final de Carrera
    Accés obert
    The increasing air traffic at European level and the limitations of the current airport infrastructure make necessary the modernization of the European Air Traffic Management. This need has prompted the creation of SESAR, ...