• 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)
      Texto en actas de congreso
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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)
      Texto en actas de congreso
      Acceso abierto
      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 general adaptive algorithm for nonGaussian source separation without any constraint 

      Lagunas Hernandez, Miguel A. (1994)
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      This paper deals with the blind source separation. The task consists in separating some independent and linearly mixed signals called sources. After some general remarks, the model is recalled and our approach based on the ...
    • A linear transform for spectral estimation 

      Lagunas Hernandez, Miguel A.; Figueiras Vidal, Aníbal R.; Mariño Acebal, José Bernardo; Carol Vilanova, Antonio (1981-10)
      Artículo
      Acceso abierto
    • 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 ...
    • A new non-linear system for estimating and suppressing narrowband interference in PN spread spectrum modulation 

      Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (1998)
      Texto en actas de congreso
      Acceso abierto
      This work develops a novel dynamic fuzzy logic system that, based on a fuzzy basis function expansion, successfully solves the non-linear problem of narrowband interference prediction and rejection in DS-SS. A fuzzy basis ...
    • A novel approach to MISO interference networks under maximum receive-power regulation 

      Pérez Neira, Ana Isabel; Vázquez Oliver, Miguel Ángel; Lagunas Hernandez, Miguel A. (WSEAS Press, 2018-07-01)
      Artículo
      Acceso abierto
      An aggressive frequency reuse is expected within the next years in order to increase the spectral ef¿ciency. Multiuser interference by all in-band transmitters can create a communication bottleneck and, therefore, it is ...
    • A novel architecture to model non-linear systems 

      Pagès Zamora, Alba Maria; Lagunas Hernandez, Miguel A. (1994)
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      This paper shows a new architecture specially thought to model non-linear systems (NLSs). At first, it was applied only to memoryless systems but then it developed to solve a more general problem, NLSs with memory. The ...
    • A recursive SVD algorithm for array signal processing 

      Duarte Ortigueira, Manuel; Lagunas Hernandez, Miguel A. (Elsevier, 1990)
      Texto en actas de congreso
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    • 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)
      Artículo
      Acceso abierto
      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 ...
    • A signal subspace framewok of nonlinearly constrained solutions 

      Konyk Jr., Stephen; Amin, Moeness G.; Lagunas Hernandez, Miguel A. (Elsevier, 1990)
      Texto en actas de congreso
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    • A technique for OFDM symbol slicing 

      Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2021)
      Texto en actas de congreso
      Acceso abierto
      This work presents an orthonormal transform that splits the Orthogonal Frequency Division Multiplex (OFDM) symbol into slices with ranked rate and decoding complexity. The advantage over the existing carrier or time ...
    • A unifying approach to transmit beamforming for the MISO interference channel 

      Vázquez, Miguel Angel; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2012)
      Texto en actas de congreso
      Acceso restringido por política de la editorial
      This paper addresses the problem of optimal beam- forming in the MISO interference channel. Different approaches are known to obtain the Pareto rate region. In this paper, several frameworks are thoroughly analyzed and ...
    • A weighted min-norm method with a recursive implementation 

      Duarte Ortigueira, Manuel; Lagunas Hernandez, Miguel A. (1990)
      Texto en actas de congreso
      Acceso abierto
    • Adaptive array beamforming for frequency hopping modulation 

      Nájar Martón, Montserrat; Lagunas Hernandez, Miguel A. (1996)
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      Acceso abierto
      A new architecture for Array Processing using Frequency Hopping (FH) modulation is addressed in this paper which takes advantage of the knowledge of the frequency sequence at the receiver, requiring neither temporal nor ...
    • Additional constraints in variational procedures for ARMA Spectral Estimation 

      Lagunas Hernandez, Miguel A. (1986)
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      Acceso abierto
      A new variational ARMA power spectral estimation procedure is proposed. The resulting is a generalization of the ARMA estimation method proposed by Lagunas et al. [1] which used correlation and cepstral constraints. The ...
    • Algoritmo para la estimación óptima de la fase instantánea 

      Lagunas Hernandez, Miguel A.; Gasull Llampallas, Antoni; Figueiras Vidal, Aníbal R.; Carol Vilanova, Antonio (1980)
      Texto en actas de congreso
      Acceso abierto
      A new approach in the problem of phase detectors is presented. The procedure is started from the optimum design of digital phase locked loop (DPLL) and some fundamental aspects as the state equations for the communication ...
    • 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)
      Texto en actas de congreso
      Acceso abierto
      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 ...
    • An adaptive design of an all-zero spectral estimator 

      Lagunas Hernandez, Miguel A.; Figueiras Vidal, Aníbal R.; Mariño Acebal, José Bernardo (Institute of Electrical and Electronics Engineers (IEEE), 1981)
      Texto en actas de congreso
      Acceso abierto
    • An adaptive spectral estimator based on the predictive innovation process and Kalman filtering 

      Lagunas Hernandez, Miguel A.; Figueiras Vidal, Aníbal R.; Gasull Llampallas, Antoni; García Gómez, Ramón (1980)
      Texto en actas de congreso
      Acceso abierto