Articles de revista: Enviaments recents

Ara es mostren els items 13-24 de 34

    • Adaptive generalized space shift keying 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013-02-21)
      Article
      Accés obert
      In this article, we propose a closed-loop precoding method for the Generalized Space Shift Keying (GSSK) modulation scheme, suitable for Multiple-Input-Single-Output (MISO) systems and denoted as adaptive GSSK (AGSSK), ...

    • Analysis of information and power transfer in wireless communications 

      Caspers, Erick; Ho Yeung, Sai; Sarkar, Tapan K.; Garcia-Lamperez, Alejandro; Salazr, Magdalena; Lagunas Hernandez, Miguel A.; Pérez Neira, Ana Isabel (2013-06)
      Article
      Accés restringit per política de l'editorial
      An analysis of wireless information compared to power transfer over the same channel, consisting of a transmitting and receiving antenna system, is discussed. This frequency-selective additive-white-Gaussian-noise channel ...

    • Low-complexity resource allocation with rate balancing for the MISO-OFDMA broadcast channel 

      Henarejos Hernández, Pol; Pérez Neira, Ana Isabel; Tralli, Velio; Lagunas Hernandez, Miguel A. (2012-12)
      Article
      Accés restringit per política de l'editorial
      This paper presents a low-complexity algorithm for multiuser scheduling and resource allocation in the Multiple Input Single Output (MISO) downlink channel with Orthogonal Frequency Division Multiple Access (OFDMA). The ...

    • Efficient margin adaptive scheduling for MIMO-OFDMA systems 

      Moretti, Marco; Pérez Neira, Ana Isabel (2013-01)
      Article
      Accés restringit per política de l'editorial
      In this paper we address the problem of margin adaptive scheduling in the downlink of an orthogonal frequency division multiple access (OFDMA) multiple-input multiple-output (MIMO) system. Optimal resource allocation in ...

    • Sparse correlation matching-based spectrum sensing for open spectrum communications 

      Lagunas Targarona, Eva; Nájar Martón, Montserrat (2012-02)
      Article
      Accés obert
      To deal with the current spectrum scarcity problem and exploiting the fact that exclusive access through tightly regulated licensing leads to idle spectrum, cognitive radio has been proposed as a way to reuse this ...

    • Determining building interior structures using compressive sensing 

      Lagunas Targarona, Eva; Amin, Moeness; Ahmad, Fauzia; Nájar Martón, Montserrat (2013-01-22)
      Article
      Accés obert
      We consider imaging of the building interior structures using Compressive Sensing (CS) with applications to through-the-wall imaging and urban sensing. We consider a monostatic synthetic aperture radar imaging system ...

    • Joint wall mitigation and compressive sensing for indoor image reconstruction 

      Lagunas Targarona, Eva; Amin, Moeness; Ahmad, Fauzia; Nájar Martón, Montserrat (IEEE Press. Institute of Electrical and Electronics Engineers, 2012)
      Article
      Accés restringit per política de l'editorial
      Compressive sensing (CS) for urban operations and through-the-wall radar imaging has been shown to be successful in fast data acquisition and moving target localizations. The research in this area thus far has assumed ...

    • A discrete bit loading algorithm for FBMC/OQAM 

      Caus López, Marius; Pérez Neira, Ana Isabel; García Armada, Ana (2012-06)
      Article
      Accés restringit per política de l'editorial
      In this letter the discrete rate maximization problem is investigated for FBMC/OQAM. The analysis reveals that if there is crosstalk certain bit allocations violate the power constraints. Aiming at ensuring the feasibility ...

    • Frequency domain joint TOA and DOA estimation in IR-UWB 

      Navarro, M; Nájar Martón, Montserrat (2011-10)
      Article
      Accés restringit per política de l'editorial
      This paper addresses the problem of TOA and DOA estimation in IR-UWB systems. It considers a frequency domain approach for joint high resolution estimation of Time Of Arrival (TOA) and Direction Of Arrival (DOA). The ...

    • Reproducible Research in Signal Processing 

      Rupp, M.; Gini, Fulvio; Pérez Neira, Ana Isabel; Pesquet-Popescu, Beatrice; Pikrakis, Aggelos; Sankur, Bulent; Vandewalle, Patrick; Zoubir, Abdelhak (HINDAWI, 2011-10-27)
      Article
      Accés obert
      Reproducible research results become more and more an important issue as systems under investigation are growing permanently in complexity, and it becomes thus almost impossible to judge the accuracy of research results ...

    • Energy efficiency communications over the AWGN relay channel 

      Gómez Vilardebó, Jesús; Pérez Neira, Ana Isabel; Nájar Martón, Montserrat (2010)
      Article
      Accés restringit per política de l'editorial
      This paper addresses the energy efficiency analysis of the relay channel under additive white Gaussian noise. We consider the rate bounds given by decode and forward and the cut set bound and assume that resources are ...

    • A real-time MIMO-OFDM mobile WiMAX receiver: architecture, design and FPGA implementation 

      Font Bach, Oriol; Bartzoudis, Nikolaos; Pascual Iserte, Antonio; López Bueno, David (2011-11)
      Article
      Accés restringit per política de l'editorial
      The IEEE 802.16e-2005 standard, also denoted as mobile WiMAX, was introduced as one of the first real efforts towards the deployment of fourth generation communication systems providing fixed and mobile broadband wireless ...