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Ara es mostren els items 9862-9881 de 245503

    • Adaptive and off-line techniques for non-linear multiscale analysis 

      Zaghi, Stefano; Martínez García, Javier; Rossi, Riccardo; Petracca, Massimo (2018-08-22)
      Article
      Accés obert
      This paper presents two procedures, based on the numerical multiscale theory, developed to predict the mechanical non-linear response of composite materials under monotonically increasing loads. Such procedures are designed ...

    • Adaptive and predictive control architecture of inland navigation networks in a global change context: application to the Cuinchy-Fontinettes reach 

      Duviella, Eric; Rajaoarisoa, Lala H.; Blesa Izquierdo, Joaquim; Chuquet, Karine (2013)
      Text en actes de congrés
      Accés obert
      In this paper, an adaptive and predictive control architecture is proposed to improve the management of inland navigation networks in a global change context. This architecture aims at ensuring the seaworthiness conditions ...

    • Adaptive approximation of signed distance fields through piecewise continuous interpolation 

      Pujol Puig, Eduard; Chica Calaf, Antonio (Elsevier, 2023-08)
      Article
      Accés obert
      In this paper, we present an adaptive structure to represent a signed distance field through trilinear or tricubic interpolation of values, and derivatives, that allows for fast querying of the field. We also provide a ...

    • Adaptive array beamforming for frequency hopping modulation 

      Nájar Martón, Montserrat; Lagunas Hernandez, Miguel A. (1996)
      Text en actes de congrés
      Accés obert
      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 ...

    • Adaptive autofocus technique for speckle control in optical feedback interferometry 

      Atashkhooei, Reza; Royo Royo, Santiago; Azcona Guerrero, Francisco Javier (2014-09-01)
      Article
      Accés restringit per política de l'editorial
      An adaptive autofocus technique for the control of speckle effect in optical feedback interferometry (OFI) is discussed. The beam spot size effect over the OFI signal is presented, justifying the proposed approach. An ...

    • Adaptive backstepping control of a class of hysteretic systems 

      Ikhouane, Fayçal; Mañosa Fernández, Víctor; Rodellar Benedé, José (SPIE Press. The International Society for Optical Engineering, 2003-08-01)
      Capítol de llibre
      Accés obert
      A backstepping-based adaptive control is designed for a class of one degree of freedom hysteretic system. The true hysteretic behavior does not need to be known for the controller design. A polynomial description is assumed ...

    • Adaptive backstepping control of some uncertain nonlinear oscillators 

      Ikhouane, Fayçal; Mañosa Fernández, Víctor; Rodellar Benedé, José (IEEE Press. Institute of Electrical and Electronics Engineers, 2003-12)
      Capítol de llibre
      Accés obert
      A backstepping-based adaptive controller is designed for a class of uncertain second orded nonlinear systems under the strict-feedback form. It is shown that the closed loop is globally uniformly ultimately bounded and we ...

    • Adaptive beam pattern selection and resource allocation for NOMA-based LEO satellite systems 

      Wang, Anyue; Lei, Lei; Hu, Xin; Lagunas Targarona, Eva; Pérez Neira, Ana Isabel; Chatzinotas, Symeon (Institute of Electrical and Electronics Engineers (IEEE), 2022)
      Text en actes de congrés
      Accés obert
      The low earth orbit (LEO) satellite system is one of the promising solutions to provide broadband services to a wide-coverage area for future integrated LEO-6G networks, where users' demands vary with time and geographical ...

    • Adaptive Beamforming for High Bit Rate Services in the FDD Mode of UTRA 

      Mestre Pons, Francesc X.; Nájar Martón, Montserrat; Antón Haro, Carles; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 1999)
      Text en actes de congrés
      Accés obert
      Most time-reference beamforming algorithms suffer from severe beampattern distortion effects when applied to high bit rate services in WCDMA, causing serious performance degradation in terms of output BER, especially at ...

    • Adaptive beamforming with temporal and spatial references in satellite communications 

      Fernández Rubio, Juan Antonio (1990)
      Text en actes de congrés
      Accés obert

    • Adaptive beamwidth optimization under Doppler ICI and positioning errors at mmWave bands 

      Ballesteros Sánchez, Christian; Pfadler, Andreas; Montero Bayo, Luca; Romeu, Jordi; Jofre Roca, Lluís (Elsevier, 2022-04-01)
      Article
      Accés obert
      The growing trends towards massive antenna arrays with focusing capabilities has enabled the use of higher frequencies at the cost of more complex systems. In the particular case of vehicular communications, millimeter-wave ...

    • Adaptive bitrate and resource allocation for relay-assisted ARQ transmissions 

      Agustín de Dios, Adrián; Vidal Manzano, José; Muñoz Medina, Olga (2009)
      Text en actes de congrés
      Accés obert
      Automatic repeat request (ARQ) protocols deal with the situations where the selected data rate is not supported by the current channel realization. The inappropriate selection is motivated by the limited channel state ...

    • Adaptive blind equalization and demodulation without channel and signal parameter extraction 

      Sala Álvarez, José; Vázquez Grau, Gregorio (1994)
      Text en actes de congrés
      Accés obert
      The problem of filtering a source of known statistics in noise and/or interference of unknown statistics is addressed in this paper. In a general framework, the optimum estimation (detection) of the desired signal requires ...

    • Adaptive blind equalization using weighted cumulant slices 

      Vidal Manzano, José; Rodríguez Fonollosa, José Adrián (Institute of Electrical and Electronics Engineers (IEEE), 1994)
      Text en actes de congrés
      Accés obert
      Many linear methods have been proposed in the literature to blindly estimate the ARMA parameters of a time series using HOS. Nevertheless, they are mainly off-line and not much has been done in the adaptive case. The method ...

    • Adaptive blind system identification using weighted cumulant slices 

      Vidal Manzano, José; Rodríguez Fonollosa, José Adrián (1996-03)
      Article
      Accés restringit per política de l'editorial
      Many linear methods have been proposed in the literature to blindly estimate the ARMA parameters of a time series using HOS. Nevertheless, they are mainly off-line and not much has been done in the adaptive case. The method ...

    • Adaptive block Diagonalization and user scheduling with out of cluster interferenced 

      García Fernández, Juan José; García Armada, Ana; Rubio López, Javier; Pascual Iserte, Antonio; Font Bach, Oriol; Bartzoudis, Nikolaos (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Interference in a cellular network is one of the main impairments that needs to be overcome. Coordination among the Base Stations may enable the use of the interference to improve the transmission rate at the cost of ...

    • Adaptive breakwaters with inflatable elements for coastal protection. Preliminary numerical estimation of their performance 

      Ryzhakov, Pavel; Hermosilla Casajús, Pedro; Ubach Fuentes, Pere-Andreu; Oñate Ibáñez de Navarra, Eugenio (2022-05)
      Article
      Accés obert
      Excessive erosion of sand beaches defines a serious problem worldwide and is particularly pronounced in the Mediterranean region. One of the typical mea- sures for alleviating this erosion consists in building rigid ...

    • Adaptive burst admission and forwarding in OBS networks 

      Rumley, Sébastien; Pedrola Escribà, Òscar; Klinkowski, Miroslaw; Pedroso, Pedro; Gaumier, Christian; Careglio, Davide; Solé Pareta, Josep (IEEE, 2009-07-31)
      Text en actes de congrés
      Accés obert
      This paper addresses the problem of controlling the performance of optical burst switching (OBS) networks in presence of non-stationary traffic demands. We propose a joint burst admission control and forwarding mechanism ...

    • Adaptive calibration of a nonlocal coupled damage plasticity model for aluminium alloy AA6082 T0 

      Belnoue, J.P.; Korsunsky, A.M. (CIMNE, 2011)
      Text en actes de congrés
      Accés obert
      Continuum Damage Mechanics (CDM) accounts for material degradation (softening and ultimately failure) by modifying the load-bearing properties of the material (stiffness and strength) through a special state variable ...

    • Adaptive channel assignment for wireless mesh networks using game theory 

      Amiri Nezhad, Maryam; Cerdà Alabern, Llorenç (Institute of Electrical and Electronics Engineers (IEEE), 2011)
      Text en actes de congrés
      Accés obert
      Channel assignment has been extensively researched for multi-radio wireless mesh networks, but it is still very challenging when it comes to its implementation. In this paper we propose a semi-dynamic and distributed channel ...