Ara es mostren els items 2-12 de 12

  • Blind beamforming for DS-CDMA systems 

    Pérez Palomar, Daniel; Lagunas Hernandez, Miguel A. (Servicio de Publicaciones Universidad de Vigo, 1999)
    Text en actes de congrés
    Accés obert
    Code Division Multiple Access (CDMA) has been proposed as an efficient access method for cellular and personal communication systems outperforming the classical FDMA and TDMA techniques. But, in contrast to them, CDMA ...
  • Capacity results on frequency-selective Rayleigh MIMO channels 

    Pérez Palomar, Daniel; Lagunas Hernandez, Miguel A.; Rodríguez Fonollosa, Javier (European Commission, 2000)
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  • DMA tradeoff for the MIMO static half-duplex relay 

    García Ordoñez, Luis; Pérez Palomar, Daniel; Rodríguez Fonollosa, Javier (2011)
    Comunicació de congrés
    Accés restringit per política de l'editorial
    The diversity and multiplexing tradeoff (DMT) has been extensively applied in the literature to compare the high-SNR outage performance of relaying techniques and to propose new design guidelines. The problem with this ...
  • Fundamental diversity, multiplexing, and array gain tradeoff under different MIMO channel models 

    García Ordoñez, Luis; Pérez Palomar, Daniel; Rodríguez Fonollosa, Javier (IEEE Press. Institute of Electrical and Electronics Engineers, 2011)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Following the seminal work of Zheng and Tse on the diversity and multiplexing tradeoff (DMT) of MIMO channels, in this paper we introduce the array gain to investigate the fundamental relation between transmission rate and ...
  • MMSE Joint Detection in frequency-selective wireless communication channels for DS-CDMA systems 

    Pérez Palomar, Daniel; Rodríguez Fonollosa, Javier; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Text en actes de congrés
    Accés obert
    In digital mobile communication systems, two important problems arise, namely multiple access interference (MAI) and intersymbol interference (ISI). An attractive solution is the use of code division multiple access (CDMA) ...
  • On the diversity, multiplexing, and array gain tradeoff in MIMO channels 

    García Ordoñez, Luis; Pérez Palomar, Daniel; Rodríguez Fonollosa, Javier (IEEE Press. Institute of Electrical and Electronics Engineers, 2010)
    Text en actes de congrés
    Accés obert
    Following the seminal work of Zheng and Tse on the diversity and multiplexing tradeoff (DMT) of MIMO channels, in this paper we introduce the array gain to further investigate the fundamental relation between transmission ...
  • Optimum self-reference spatial diversity processing for FDSS and FH communication systems 

    Pérez Palomar, Daniel; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Text en actes de congrés
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    In 1996, a new spread spectrum communication system, called Frequency Diversity Spread Spectrum (FDSS), was proposed as a system to mitigate the problems of the common spread spectrum techniques. In this paper, two blind ...
  • Practical algorithms for a family of waterfilling solutions 

    Pérez Palomar, Daniel; Rodríguez Fonollosa, Javier (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2005-02-28)
    Article
    Accés obert
    Many engineering problems that can be formulated as constrained optimization problems result in solutions given by a waterfilling structure; the classical example is the capacity-achieving solution for a frequency-selective ...
  • Re-optimisation of lpc filters for multi-pulse coded excitation 

    Pérez Palomar, Daniel; Sandler, M Price And M (Institution of Electrical Engineers, 1999-06)
    Article
    Accés obert
    A method for optimising LPC filters in linear prediction based speech coders is described. The optimisation process compensates for errors incurred through coding the excitation signal, providing an improvement in the ...
  • Self-reference beamforming for DS-CDMA communication systems 

    Pérez Palomar, Daniel; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2000)
    Text en actes de congrés
    Accés obert
    A self-reference beamforming algorithm, based on the inherent temporal redundancy structure presented by the spreading codes of direct sequence code division multiple access (DS-CDMA) systems, is proposed. It is derived ...
  • Self-reference spatial diversity processing for spread spectrum communications 

    Pérez Palomar, Daniel; Nájar Martón, Montserrat; Lagunas Hernandez, Miguel A. (2000-09)
    Article
    Accés restringit per política de l'editorial
    n this paper, the application of three blind (or selfreference) spatial diversity signal processing methods to Spread Spectrum (SS) communications is described. These methods do not require any kind of side information ...