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Ara es mostren els items 9893-9912 de 245901

    • 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
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      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 ...

    • Adaptive clock with useful jitter 

      Cortadella, Jordi; Lavagno, Luciano; López Muñoz, Pedro; Lupon Navazo, Marc; Moreno Vega, Alberto; Roca Pérez, Antoni; Sapatnekar, Sachin S. (2015-05-19)
      Report de recerca
      Accés obert
      The growing variability in nanoelectronic devices due to uncertainties from the manufacturing process and environmental conditions (power supply, temperature, aging) requires increasing design guardbands, forcing circuits ...

    • Adaptive comfort and climate-sensitive architecture: how occupants feel in their homes? 

      Ganem, C; Coch Roura, Helena; Esteves, A (University College Dublin, 2008)
      Text en actes de congrés
      Accés obert

    • Adaptive Compensation Strategy For The Tracking/Rejection of Signals with Time-Varying Frequency in Digital Repetitive Control Systems 

      Ramos Fuentes, Germán Andrés; Olm Miras, Josep Maria; Costa Castelló, Ramon (2009-09)
      Text en actes de congrés
      Accés obert
      Digital repetitive control is a technique which al- lows to track periodic references and/or reject peri- odic disturbances. Repetitive controllers are usually de- signed assuming a fixed frequency for the signals to ...

    • Adaptive control for the synchronization of multiple robot manipulators with coupling time-delays 

      Nuño Ortega, Emmanuel; Basañez Villaluenga, Luis; Ortega, Romeo (2010)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      Two controllers capable of achieving asymptotic convergence of position and velocity errors, of the ithmanipulator within a multiple robot network, are proposed. The controllers employ adaptive techniques to find an ...

    • Adaptive control for wearable robots in human-centered rehabilitation tasks 

      Rajasekaran, Vijaykumar (Universitat Politècnica de Catalunya, 2015-12-22)
      Tesi
      Accés obert
      Robotic rehabilitation therapies have been improving by providing the needed assistance to the patient, in a human-centered environment, and also helping the therapist to choose the necessary procedure. This thesis presents ...

    • Adaptive control-based voltage regulation of a magnetically coupled multiport DC-DC converter for electrified vehicles applications 

      Holm Nielsen, Jens Bo; Fossas Colet, Enric; Repecho del Corral, Víctor; Dòria Cerezo, Arnau; Griñó Cubero, Robert (2020)
      Text en actes de congrés
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      This paper presents an adaptive control-based strategy to regulate the output voltage of a a magnetically coupled multiport dc-dc converter aimed at automotive applications. The proposed algorithm renders robustness to ...

    • Adaptive cross-sections of anatomical models 

      Díaz Iriberri, José; Monclús Lahoya, Eva; Navazo Álvaro, Isabel; Vázquez Alcocer, Pere Pau (North-Holland, 2012-09)
      Article
      Accés restringit per política de l'editorial
      Medical illustrations have been used for a long time for teaching and communicating information for diagnosis or surgery planning. Illustrative visualization systems create methods and tools that adapt traditional illustration ...