Ara es mostren els items 1-20 de 48

  • Adaptive beamforming with temporal and spatial references in satellite communications 

    Fernández Rubio, Juan Antonio (1990)
    Text en actes de congrés
    Accés obert
  • A Game Theoretical algorithm for joint power and topology control in distributed WSN 

    Closas Gómez, Pau; Pagès Zamora, Alba Maria; Fernández Rubio, Juan Antonio (2009)
    Comunicació de congrés
    Accés obert
    In this paper, the issue of network topology control in wireless networks using a fully distributed algorithm is considered. Whereas the proposed distributed algorithm is designed applying game theory concepts to design ...
  • Algorithms and structures for source separation based on the constant modulus property 

    Cerquides Bueno, Jose Ramon; Fernández Rubio, Juan Antonio (1996)
    Text en actes de congrés
    Accés obert
    We propose two structures and theirs associated algorithms designed to solve the blind source separation problem in the presence of noise and interferences. Both structures exploit the non convexity of the Constant Modulus ...
  • A non-extensive maximum entropy based regularization method for bad conditioned inverse problems 

    Rebollo-Neira, L; Fernández Rubio, Juan Antonio; Plastino, A (1998-08)
    Article
    Accés restringit per política de l'editorial
    A regularization method based on the non-extensive maximum entropy principle is devised. Special emphasis is given to the q=1/2 case. We show that, when the residual principle is considered as constraint, the q=1/2 generalized ...
  • A non-extensive maximum entropy based regulations method for bad conditioned inverse problems 

    Rebollo Neira, Laura; Fernández Rubio, Juan Antonio; Plastino, Angel Luís (1998-01)
    Article
    Accés obert
    A regularization method based on the non-extensive maximum entropy principle is devised. Special emphasis is given to the q=1/2 case. We show that, when the residual principle is considered as constraint, the q=1/2 generalized ...
  • Aplicación de un perceptrón multicapa a la estimación de angulos de llegada de fuentes de banda estrecha 

    Cerquides Bueno, José Ramón; Fernández Rubio, Juan Antonio (1990)
    Text en actes de congrés
    Accés obert
  • A polynomial rooting approach for synchronization in multipath channels using antenna arrays 

    Seco Granados, Gonzalo; Swindlehurst, A K; Fernández Rubio, Juan Antonio (2000-08)
    Article
    Accés obert
    The estimation of the delay of a known training signal received by an antenna array in a multipath channel is addressed. The effect of the co-channel interference is taken into account by including a term with unknown ...
  • A reduced-complexity and asymptotically efficient time-delay estimator 

    Seco Granados, Gonzalo; Swindlehurst, A L; Fernández Rubio, Juan Antonio; Astély, D (ICASSP, 2000)
    Text en actes de congrés
    Accés obert
    This paper considers the problem of estimating the time delays of multiple replicas of a known signal received by an array of antennas. Under the assumptions that the noise and co-channel interference (CCI) are spatially ...
  • Assessment of RSS model calibration with real WLAN devices 

    Castro, Juan Manuel; Moragrega, Ana; Closas, Pau; Fernández Rubio, Juan Antonio (2015)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    Received Signal Strength (RSS) for indoor localization is widely used due to its simplicity and availability in most mobile devices. The RSS channel model is defined by the propagation losses and the shadow fading. This ...
  • Bayesian filtering for nonlinear state-space models in symmetric alpha-stable measurment noise 

    Vila Valls, Jordi; Fernández Prades, Carlos; Closas Gómez, Pau; Fernández Rubio, Juan Antonio (2011)
    Text en actes de congrés
    Accés obert
    Bayesian ltering appears in many signal processing problems,reason why it attracted the attention of many researchers to develop efficient algorithms, yet computationally a ordable. In many real systems, it is appropriate ...
  • Beamforming and Multiuser Detection in CDMA Systems with External Interferences 

    Muñoz Medina, Olga; Fernández Rubio, Juan Antonio (ICASSP'99, 1999)
    Text en actes de congrés
    Accés obert
    Multiuser detection has been investigated to mitigate the near-far effect in CDMA systems. Antenna arrays have been shown to provide spatial diversity and cancel undesired signals. In this paper we consider the synergy of ...
  • Blind multiuser adaptive combining for asynchronous cdma systems 

    Muñoz Medina, Olga; Fernández Rubio, Juan Antonio (1996)
    Text en actes de congrés
    Accés obert
    This paper presents a novel technique to globally estimate and track the direction of arrival (DOA) of different users in an asynchronous CDMA system. The estimates are obtained exploiting the temporal structure of CDMA ...
  • Blind multi-user combining at the base station for asynchronous CDMA systems 

    Muñoz Medina, Olga; Fernández Rubio, Juan Antonio (Institute of Electrical and Electronics Engineers (IEEE), 1996)
    Text en actes de congrés
    Accés obert
    This paper studies the potential benefits of antenna arrays in cellular CDMA communications and proposes a powerful scheme to undertake the array processing at the base station in CDMA mobile systems. The proposed technique ...
  • Cancellation of external and multiple access interference in cdma systems using antenna arrays 

    Muñoz Medina, Olga; Fernández Rubio, Juan Antonio (D. DOCAMPO, A. R. FIGUEIRAS, F. PÉREZ, 1996)
    Text en actes de congrés
    Accés restringit per política de l'editorial
    This paper deals with the problem of multisensor-multiuser detection in CDMA systems in the presence of interferences external to the system. The paper presents a new method able to estimate the spatial signature of all ...
  • Cancellation of external and multiple access interference in cdma systems using antenna arrays 

    Muñoz Medina, Olga; Fernández Rubio, Juan Antonio (1997-09)
    Article
    Accés restringit per política de l'editorial
    This paper deals with the problem of multisensor-multiuser detection in CDMA systems in the presence of interferences external to the system. The paper presents a new method able to estimate the spatial signature of all ...
  • Code-timing synchronization in DS-CDMA systems using space-time diversity 

    Seco Granados, Gonzalo; Fernández Rubio, Juan Antonio (Servicio de Publicaciones Universidad de Vigo, 1999)
    Text en actes de congrés
    Accés obert
    The synchronization of a desired user transmitting a known training sequence in a direct-sequence (DS) asynchronous code-division multiple-access (CDMA) sys-tem is addressed. It is assumed that the receiver consists of an ...
  • Collective unambiguous positioning with high-order BOC signals 

    García Molina, J. A.; Fernández Rubio, Juan Antonio (2018-01-01)
    Article
    Accés obert
    The unambiguous estimation of high-order BOC signals in harsh propagation conditions is still an open problem in the literature. This paper proposes to overcome the limitations observed in state-of-the-art unambiguous ...
  • COMalaWEB: plataforma basada en noves tecnologies aplicades a la docència 

    Fernández Rubio, Juan Antonio; Fernández Prades, Carlos; Ramírez Bellido, Alejandro; Cabrera Beán, Margarita Asuncion; Pomar Berry, Christian (2005-02)
    Text en actes de congrés
    Accés obert
    Les possibilitats que ens ofereixen les noves tecnologies de la informació aplicades a l’àmbit de la docència és un tema encara no prou ben explotat. Aquest projecte pretén investigar aquests conceptes mitjançant la creació ...
  • Comunicaciones analógicas 

    Fernández Rubio, Juan Antonio (Edicions UPC, 1999)
    Llibre
    Accés restringit a la comunitat UPC
    El objetivo de este libro es proporcionar al estudiante una introducción a los principios básicos de los Sistemas de Comunicaciónes Analógicos. Los cinco últinos capítulos del libro se adaptan perfectamente a la asignatura ...
  • Comunicacions analògiques 

    Fernández Rubio, Juan Antonio (Edicions UPC, 1999)
    Llibre
    Accés restringit a la comunitat UPC
    L'objectiu d'aquest llibre és proporcionar a l'estudiant una introducció als principis bàsics dels sistemes de comunicació analògics. Els cinc darrers temes del llibre s'adapten perfectament a l'assignatura de COM I del ...