Ara es mostren els items 1-20 de 203

  • 1. Inauguració 

    Anguera Argilaga, M. Teresa; Pérez Neira, Ana Isabel (2012-10-23)
    Audiovisual
    Accés obert
  • 3D polarized modulation: system analysis and performance 

    Henarejos, Pol; Pérez Neira, Ana Isabel (2018-06-26)
    Article
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    In this paper we present a novel modulation technique for dual polarization communication systems, which reduces the error rate compared with the existent schemes. This modulation places the symbols in a 3D constellation, ...
  • Achievable data rate of coordinated multi-point transmission for visible light communications 

    Dowhuszko, Alexis; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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    This paper studies the sum data rate that a Visible Light Communication (VLC) system with multiple users canachieve when phosphor-converted white LED panels are usedto provide illumination and communication simultaneously. ...
  • A cross-layer scheduling strategy for the downlink of a MIMO-OFDMA system with heterogeneous traffic 

    Tralli, V.; Pérez Neira, Ana Isabel; Henarejos, P. (2009)
    Text en actes de congrés
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    in this paper we propose and investigate a cross-layer multiuser scheduling strategy for the support of heterogeneous traffic in the downlink of a MIMO-OFDMA system. It jointly considers different objectives: maximize ...
  • Adaptive generalized space shift keying 

    Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013-02-21)
    Article
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    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), ...
  • 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
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    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 ...
  • 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 ...
  • Advanced interference mitigation techniques for the forward link of multi-beam broadband satellite systems 

    Devillers, Bertrand; Pérez Neira, Ana Isabel (2011)
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    High throughput satellite systems are expected to rely in the user link on multi-beam architectures with small beam footprints and strong frequency reuse among beams, and will therefore operate in an interference limited ...
  • Advanced signal processing techniques for fixed and mobile satellite communications 

    Henarejos, Pol; Pérez Neira, Ana Isabel; Mazzali, N.; Mosquera Nartallo, Carlos (Institute of Electrical and Electronics Engineers (IEEE), 2016)
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    Enabling ultra fast systems has been widely investigated during recent decades. Although polarization has been deployed from the beginning in satellite communications, nowadays it is being exploited to increase the throughput ...
  • A dynamic non-singleton fuzzy logic system for DS/CDMA communications 

    Pérez Neira, Ana Isabel; Sueiro, Jesús Cid; Roca, Josep; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 1998)
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    We investigate a dynamic fuzzy logic system, specifically, its non-singleton generalization, and derive a novel adaptive fuzzy line enhancer that successfully solves the non-linear problem of narrowband interference (NBI) ...
  • A fuzzy logic filter for coherent detection in mobile communication receivers 

    Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A.; Jové, A; Artés, A (1998)
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    This paper proposes and demonstrates the use of a fuzzy logic filter for carrier phase synchronization in digital mobile communication receivers. The use of a priori knowledge of the dynamics of the phase in mobile fading ...
  • A low-complexity method for antenna selection in spatial modulation systems 

    Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2013-11-13)
    Article
    Accés restringit per política de l'editorial
    In this Letter, a low-complexity Euclidean distancebased method for antenna subset selection in Spatial Modulation systems is presented. The proposed method avoids the high complexity of both the optimal exhaustive ...
  • A margin adaptive scheduling algorithm for FBMC/OQAM systems 

    Caus López, Marius; Pérez Neira, Ana Isabel; Moretti, Marco; Kliks, Adrian (2014)
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    This paper addresses the margin adaptive problem for the filter bank multicarrier (FBMC) modulation based on the offset QAM (OQAM), referred to as FBMC/OQAM. The analysis conducted in this paper reveals that due to the ...
  • A maximum approach for robust MIMO design: combining OSTBC and beamforming with minimum transmission power requirements 

    Pascual Iserte, Antonio; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (2004)
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    In this paper we address the problem of the design of a transmitter in a Multi-Input-Multi-Output (MIMO) space diversity system. We consider a design which is robust to errors in the channel estimate available at the ...
  • An adaptative fuzzy logic enhancer for rejection of narrowband interference in DS-Spread Spectrum 

    Pérez Neira, Ana Isabel; Antón Haro, Carles; Lagunas Hernandez, Miguel A. (1998)
    Text en actes de congrés
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    This work develops a novel adaptive fuzzy line enhancer that, based on a fuzzy basis function expansion, successfully solves the non-linear problem of narrowband interference estimation and rejection in direct sequence-spread ...
  • Analog network coding in the multiple access relay channel: error rate analysis and optimal power allocation 

    Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2015-06-01)
    Article
    Accés obert
    In this paper, we consider Analog Network Coding (ANC) in the Multiple Access Relay Channel (MARC) with multiple relays, and provide the following three-fold contribution: 1) we introduce a tractable mathematical framework ...
  • Analysis and evaluation of decentralized multiaccess Mac for ad-hoc networks 

    Pérez Neira, Ana Isabel; Realp, Marc (2003)
    Text en actes de congrés
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    In mobile ad-hoc radio networks, terminals are mobile and heterogeneous, the architecture of the network is continuously changing, communication links are packet oriented and radio resources are scarce. Therefore, ...
  • 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 ...
  • Analysis of orthogonal transmit beamforming using statistical channel information 

    Xu, Hongji; Liu, Ju; Rubio, Francisco; Pérez Neira, Ana Isabel (2005-12)
    Article
    Accés restringit per política de l'editorial
    The multiple-access interference (MAI) is one of the major factors threatening the performance of multiuser systems. Transmit beamforming is a powerful strategy to increase the system capacity and mitigate interference. ...
  • A new approach to exploit channel power imbalance in distributed antenna systems with fiber fronthaul 

    Dowhuszko, Alexis; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2017)
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    Cloud Modulation (CM) is a novel transmission method that mitigates the non-linear impairments introduced by the Radio-over-Fiber (RoF) links of a distributed antenna system. In CM, constant-envelope phase-modulated radio ...