Ara es mostren els items 1-12 de 12

    • A robust maximin approach for MIMO communications with imperfect channel state information based on convex optimization 

      Pascual Iserte, Antonio; Pérez Palomar, Daniel; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (2006-01)
      Article
      Accés obert
      This paper considers a wireless communication system with multiple transmit and receive antennas, i.e., a multiple-input-multiple-output (MIMO) channel. The objective is to design the transmitter according to an imperfect ...
    • 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)
      Text en actes de congrés
      Accés obert
    • 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
      Accés obert
      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 ...