Exploració per autor "Pérez Neira, Ana Isabel"
Ara es mostren els items 89-108 de 252
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Evolution of spatial and multicarrier scheduling: towards multi-cell scenario
Henarejos Hernández, Pol; Pérez Neira, Ana Isabel; Tralli, Velio; Moretti, Marco; Dimitriou, Nikos; Dainelli, Giulio (2010)
Text en actes de congrés
Accés obertOFDMA systems are considered as the promising multiple access scheme of next generation multi-cellular wireless systems. In order to ensure the optimum usage of radio resources, OFDMA radio resource management algorithms ... -
Examen Final
Pérez Neira, Ana Isabel (Universitat Politècnica de Catalunya, 2019-01-08)
Examen
Accés restringit a la comunitat UPC -
Examen Final
Pascual Iserte, Antonio; Pérez Neira, Ana Isabel; Riba Sagarra, Jaume (Universitat Politècnica de Catalunya, 2021-06-17)
Examen
Accés restringit a la comunitat UPC -
Examen Final
Pérez Neira, Ana Isabel (Universitat Politècnica de Catalunya, 2014-06-06)
Examen
Accés restringit a la comunitat UPC -
Examen Final
Cabrera-Bean, Margarita; Pascual Iserte, Antonio; Pérez Neira, Ana Isabel (Universitat Politècnica de Catalunya, 2020-06-16)
Examen
Accés restringit a la comunitat UPC -
Experimental performance bounds of MIMO-FBMC/OQAM systems
Caus López, Marius; Pérez Neira, Ana Isabel (2010)
Text en actes de congrés
Accés restringit per política de l'editorialThis paper addresses the application of filter bank multicarrier (FBMC) systems to multiple-input-multiple-output (MIMO) channels. In particular, it is investigated the FBMC modulation based on OQAM, known as FBMC/OQAM. ... -
Experimental performance evaluation of a MAC protocol for cooperative ARQ scenarios
Verikoukis, Christos; Pérez Neira, Ana Isabel; Alonso Zárate, Jesús; Skiannis, Ch. (2009)
Text en actes de congrés
Accés obertThis paper provides details and performance evaluation of the implementation of the Persistent Relay Carrier Sensing Multiple Access (PRCSMA) protocol for Cooperative ARQ (C-ARQ) scenarios using off-the-shelf wireless ... -
Exploiting transmission spatial diversity in frequency selective systems with feedback channel
Pérez Neira, Ana Isabel; Pascual, T.; Lagunas Hernandez, Miguel A. (2003)
Text en actes de congrés
Accés obertIn this paper we address the design of a multiple transmit antenna system in which the Channel State Information (CSI) at the transmitter is not perfect. Two different approaches are analyzed one based on the Minimization ... -
Exploiting the cylic prefix for beamforming in OFDM receivers
Pérez Neira, Ana Isabel; Bartolomé Calvo, Diego (2002)
Text en actes de congrés
Accés obertBlind and semiblind antenna array algorithms are proposed for Orthogonal Frequency Division Multiplexing (OFDM) systems in the time domain. A blind technique is proposed for the maximization of the temporal Signal to Noise ... -
Exploiting transmission spatial diversity in frequency selective systems with feedback channel
Pascual Iserte, Antonio; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 2003)
Text en actes de congrés
Accés restringit per política de l'editorialIn this paper we address the design of a multiple transmit antenna system in which the Channel State Information (CSI) at the transmitter is not perfect. Two different approaches are analyzed: one based on the Minimization ... -
Exploratory analysis of superposition coding and rate splitting for multibeam satellite systems
Caus, Marius; Pastore, Adriano; Navarro Rodero, Mònica; Ramirez, Tomás; Mosquera Nartallo, Carlos; Noels, Nele; Alagha, Nader; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2018)
Text en actes de congrés
Accés restringit per política de l'editorialThe adoption of aggressive frequency reuse schemes along with interference management techniques has become the leading paradigm in satellite communications to increase the spectral efficiency. In general terms, one cannot ... -
FBMC-based random access signal design and detection for LEO base stations
Caus López, Màrius; Pérez Neira, Ana Isabel (Institute of Electrical and Electronics Engineers (IEEE), 2022-10-04)
Article
Accés obertThe integration of non-terrestrial networks into the 5G ecosystem is mainly driven by the possibility of provisioning service in remote areas. In this context, the advent of flying base stations at the low Earth orbit (LEO) ... -
FBMC/OQAM MIMO transceiver
Caus López, Marius; Mestre, Xavier; Gregoratti, David; Pérez Neira, Ana Isabel; Haardt, Martin; Cheng, Yao; Gomes Baltar, Leonardo (Elsevier, 2017-07-27)
Capítol de llibre
Accés restringit per política de l'editorialOrthogonal Waveforms and Filter Banks for Future Communication Systems provides an up-to-date account of orthogonal filter bank-based multicarrier (FBMC) systems and their applications in modern and future communications, ... -
Flexible MIMO architectures: guidelines in the design of MIMO parameters
Payaró Llisterri, Miquel; Pascual Iserte, Antonio; Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A. (2005)
Text en actes de congrés
Accés obertOne of the multiple advantages of communicating through MIMO systems is their inherent ability to provide flexible configurations. Following this line of thought, in this paper we present a generic framework to study ... -
Forward link interference mitigation in mobile interactive satellite systems
Henarejos Hernández, Pol; Vazquez, Miguel Angel; Cocco, Giuseppe; Pérez Neira, Ana Isabel (American Institute of Aeronautics and Astronautics (AIAA), 2013)
Text en actes de congrés
Accés restringit per política de l'editorialWe present the results of the performance evaluation of polarization-time coding and soft interference cancellation in multi-beam satellite systems a ected by co-channel interference in realistic setups. The standard of ... -
Fuzzy adaptive signal predistorter for OFDM signals
Bas Botella, Juan Antonio; Pérez Neira, Ana Isabel (Eurasip, 2000)
Text en actes de congrés
Accés obertThis work develops an adaptive High Power Amplifier (HPA) predistorter that applies the fuzzy logic and fuzzy set theory. As Volterra and Fourier series models or Neural Networks, a fuzzy logic system (FLS) is a nonlinear ... -
Fuzzy inference based robust beamforming
Morell Pérez, Antoni; Pascual Iserte, Antonio; Pérez Neira, Ana Isabel (2005-10)
Article
Accés restringit per política de l'editorialThis paper presents a new approach to robust beamforming based on fuzzy logic theory that is suitable for both point and scattered sources. The presented technique is based on the optimum beamformer and makes it robust to ... -
Fuzzy logic for robust detection in wireless communications
Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A.; Bas, J (Institute of Electrical and Electronics Engineers (IEEE), 1997)
Text en actes de congrés
Accés obertThis work addresses the problem of spatial reference estimation in mobile scenarios. Novel techniques based on fuzzy logic are introduced to enhance the performance of a tracking system. Specifically, the model-free function ... -
Fuzzy logic in signal processing
Pérez Neira, Ana Isabel (2000-06-01)
Altres
Accés restringit per política de l'editorial -
Fuzzy techniques for robust localization & tracking
Pérez Neira, Ana Isabel; Lagunas Hernandez, Miguel A.; Bas, J (GRETSI SERVICE, 1997)
Text en actes de congrés
Accés obertThis work addresses the problem of spatial reference estimation in mobile scenarios. Novel techniques based on fuzzy logic are introduced to enhance the performance of a tracking system. Specifically, the model-free ...