Exploració per autor "Lamarca Orozco, M. Meritxell"
Ara es mostren els items 21-40 de 46
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DA-GLRT burst detection and synchronization based on a chirp-like preamble
(2008)
Text en actes de congrés
Accés restringit per política de l'editorialA specific preamble for the tasks of signal detection and synchronization in burst digital communications is presented. The preamble resembles a chirp signal used in RADAR applications. Its main benefit is that it allows ... -
Detectores duales de frecuencia dependientes de los datos en comunicaciones digitales
(Universidad de Málaga, 1992)
Text en actes de congrés
Accés obert -
Diversity in mobile communications for blind detection of block-coded modulations
(Institute of Electrical and Electronics Engineers (IEEE), 1999)
Text en actes de congrés
Accés obertSpatial, temporal, and frequency diversity structures are analyzed to address the blind equalization problem in the presence of time-variant frequency selective channels. The aim of the paper is to present equalization ... -
Diversity techniques for blind channel equalization in mobile communications
(Institute of Electrical and Electronics Engineers (IEEE), 1997)
Text en actes de congrés
Accés obertA blind algorithm for channel distortion compensation is presented which can be employed in spatial or temporal diversity receivers. The proposed technique can be used in frequency selective and frequency flat fading mobile ... -
Diversity techniques for blind equalization in mobile communications
(1997)
Text en actes de congrés
Accés obertThis paper deals with blind equalization of mobile channels, which are either frequency-selective or multiplicative. The proposed algorithm can be used for channel distortion compensation in diversity systems subject ... -
Estimacio de frequencia en comunicacions via satel.lit amb dfd's adaptatius
(1994-06)
Article
Accés obertSenyal i comunicacions digitals per satèl·lit. Mètodes de descomposició en valors singulars, per estimació conjunta de freqüència i sincronisme de bit SENYAL I COMUNICACIONS DIGI -
Examen Final
(Universitat Politècnica de Catalunya, 2013-01-16)
Examen
Accés restringit a la comunitat UPC -
Examen Final
(Universitat Politècnica de Catalunya, 2023-05-31)
Examen
Accés restringit a la comunitat UPC -
Examen Reavaluació
(Universitat Politècnica de Catalunya, 2023-06-29)
Examen
Accés restringit a la comunitat UPC -
Informe final. Demostrador de serveis Galileo per Catalunya
(2007-09-25)
Report de recerca
Accés restringit per acord de confidencialitat -
Informe Número 1: Projecte SETRAM
(2008-10-01)
Report de recerca
Accés restringit per acord de confidencialitatL’objectiu del projecte SETRAM és l’especificació d’algorismes de classificació no supervisada d’informació de mobilitat d’usuaris a partir de dades de posició proporcionades per la xarxa mòbil i/o satèl.lit. En el projecte ... -
Linear precoding for mutual information maximization in MIMO systems
(2010)
Text en actes de congrés
Accés obertWe study the design of linear precoders for maximization of the mutual information in MIMO systems with arbitrary constellations and with perfect channel state information at the transmitter. We derive the structure of ... -
List message passing algorithm for noiseless compressed sensing
(2015)
Text en actes de congrés
Accés obertWe propose a verification-based algorithm for noiseless Compressed Sensing that reconstructs the original signal operating on a sparse graph. The proposed scheme has affordable computational complexity and its performance ... -
MMSE decoding for analog joint source channel coding using Monte Carlo importance sampling
(2009)
Text en actes de congrés
Accés obertWe investigate the performance of a discrete-time all-analog-processing joint source-channel coding system for the transmission of i.i.d. Gaussian sources over additive white Gaussian noise (AWGN) channels. At the encoder, ... -
Multichannel receivers from ofdm and tdma in mobile communications
(IEEE IEEE, 1997)
Text en actes de congrés
Accés obertThis paper addresses the use of multichannel receivers for blind equalization in TDMA under frequency selective channels and OFDM systems in frequency flat fading channels. A new criteria is proposed for blind equalization ... -
Non-linear graph-based codes for joint source-channel coding
(2010)
Text en actes de congrés
Accés obertWe study the behavior of a new family of nonlinear graph-based codes, previously introduced for compression of asymmetric binary memoryless sources, for the joint source-channel coding scenario in which the codewords are ... -
Non-linear graph-based codes for source coding
(2009)
Text en actes de congrés
Accés obertWe introduce a new family of graph-based source codes that can be regarded as a nonlinear generalization of LDPC codes, and apply them to the compression of asymmetric binary memoryless sources. Simulation results and the ... -
Nota tècnica 1: projecte SETRAM
(2008-02-26)
Altres
Accés restringit per acord de confidencialitatUn dels aspectes més crítics per assolir una definició avançada i realista del sistema SETRAM és la identificació de les tecnologies més adequades per a la localització d’usuaris mòbils, des de les ja existents (aplicables ... -
Optimum power allocation and bit loading for BICM systems
(2010-07-01)
Article
Accés obertThis paper introduces a joint bit loading and power allocation algorithm for systems combining bit-interleaved coded modulation (BICM) with multicarrier transmission. The proposed algorithm maximizes the mutual information, ... -
Optimum power allocation and bit loading with code rate constraints
(2009)
Text en actes de congrés
Accés obertIn this paper, a new power allocation and bit loading policy is defined for those systems working with a preselected binary channel code and specific bit error rate (BER) requirements. It consists on the maximization of ...
