Exploració per autor "Nájar Martón, Montserrat"
Ara es mostren els items 29-48 de 66
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High resolution adaptative arrays based on random processing techniques: frequency hopping modulation
Nájar Martón, Montserrat; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 1995)
Text en actes de congrés
Accés obertA new architecture for adaptive arrays using frequency hopping modulation is addressed. The resolution of the array and the interference rejection increase substantially applying random processing to the carrier frequency ... -
High resolution adaptive arrays based on random processing techniques: frequency hopping modulation
Nájar Martón, Montserrat; Lagunas Hernandez, Miguel A. (Institute of Electrical and Electronics Engineers (IEEE), 1995)
Text en actes de congrés
Accés obertA new architecture for adaptive arrays using frequency hopping modulation is addressed. The resolution of the array and the interference rejection increase substantially applying random processing to the carrier frequency ... -
Innovative signal processing techniques for wireless positioning
Dardari, Davide; Di Dio, Mario; Emmanuele, Andrea; Fontanella, Diana; Gezici, Sinan; Gholami, Mohammad Reza; Kieffer, Michel; Lagunas Targarona, Eva; Louveaux, Jérôme; Mallat, Achraf; Nájar Martón, Montserrat; Navarro, Monica; Nicoli, Monica; Reggiani, Luca; Rydström, Mats; Ström, Erik G.; Vandendorpe, Luc; Zanier, Francesca (Elsevier, 2011-10)
Capítol de llibre
Accés restringit per política de l'editorial -
Joint beamforming and channel estimation for pilot-aided WCDMA systems
Mestre Pons, Francesc X.; Nájar Martón, Montserrat; Rodríguez Fonollosa, Javier (Institute of Electrical and Electronics Engineers (IEEE), 2000)
Text en actes de congrés
Accés obertThe problem of joint beamforming and channel estimation for multi-rate multi-code systems is addressed. Usual schemes perform this filtering/estimation operation making use of a training sequence time-multiplexed with the ... -
Joint TOA and DOA estimation compliant with IEEE 802.15.4a standard
Lagunas Targarona, Eva; Nájar Martón, Montserrat; Navarro, Monica (2010)
Text en actes de congrés
Accés obertUltra-WideBand (UWB) technology offers the potential of achieving high ranging accuracy through signal Time-Of-Arrival (TOA) measurements, even in harsh enviroments due to its ability to resolve multipath and penetrate ... -
Joint wall mitigation and compressive sensing for indoor image reconstruction
Lagunas Targarona, Eva; Amin, Moeness; Ahmad, Fauzia; Nájar Martón, Montserrat (IEEE Press. Institute of Electrical and Electronics Engineers, 2012)
Article
Accés restringit per política de l'editorialCompressive sensing (CS) for urban operations and through-the-wall radar imaging has been shown to be successful in fast data acquisition and moving target localizations. The research in this area thus far has assumed ... -
Muestreo aleatorio en frecuencia aplicado a la identificación de sistemas no lineales
Pagès Zamora, Alba Maria; Nájar Martón, Montserrat; Pérez Neira, Ana Isabel (Universidad de Valencia, 1994)
Text en actes de congrés
Accés obert -
Muestreo aleatorio en frecuencia aplicado a la identificación de sistemas no lineales
Pagès Zamora, Alba Maria; Nájar Martón, Montserrat; Pérez Neira, Ana Isabel (Universitat Politècnica de València, 1993)
Text en actes de congrés
Accés obert -
Multi-TOA based position estimation for IR-UWB
Floriach, Genís; Nájar Martón, Montserrat; Navarro, Monica (Institute of Electrical and Electronics Engineers (IEEE), 2017)
Comunicació de congrés
Accés restringit per política de l'editorialThe problem of localizing an IR-UWB transmitter from the signals received at several anchors is considered. The positioning problem is typically solved in a two-step approach where in the first step the Time of Arrival ... -
Optimal linear correction in LMMSE estimation using moments of the complex inverse Wishart distribution
Serra, Jordi; Nájar Martón, Montserrat (Institute of Electrical and Electronics Engineers (IEEE), 2012)
Text en actes de congrés
Accés restringit per política de l'editorialThe conventional linear minimum mean square error esti- mator (LMMSE) suffers a severe performance degradation whenever the sample size is comparable to the observation dimension. In order to tackle this problem, we ... -
Pattern matching for building feature extraction
Lagunas Targarona, Eva; Amin, Moeness G.; Ahmad, Fauzia; Nájar Martón, Montserrat (2014-12-01)
Article
Accés restringit per política de l'editorialWe address the problem of detecting building dominant scatterers using a reduced number of measurements with applications to through-the-wall radar (TWR) and urban sensing. We consider oblique illumination, which specially ... -
Performance comparison between FBMC and OFDM in MIMO systems under channel uncertainty
Payaró Llisterri, Miquel; Pascual Iserte, Antonio; Nájar Martón, Montserrat (2010)
Text en actes de congrés
Accés obert -
Performance of a filterBank multiCarrier (FBMC) physical layer in the WiMAX context
Ringset, Vidar; Rustad, Helge; Schaich, Frank; Vandermont, Jurgen; Nájar Martón, Montserrat (2010)
Text en actes de congrés
Accés obertThis paper describes some of the outcome of the FP7 project PHYDYAS, whose main objective was to propose a new physical layer that will enable introduction of cognitive radios and dynamic access spectrum management. ... -
Pointing correction in an adaptive array for communications
Lagunas Hernandez, Miguel A.; Nájar Martón, Montserrat (Institute of Electrical and Electronics Engineers (IEEE), 1991)
Text en actes de congrés
Accés obertThe authors discuss DSP procedures for pointing correction in adaptive arrays which uses a spatial reference to form the optimum beam (generalized sidelobe canceller, GSLC). The problem of adequate pointing arises from ... -
Position estimation for IR-UWB systems: DPE, Multi-TOA approach, and their compressive sensing-based modeling
Lagunas, Eva; Navarro, Monica; Closas, Pau; Nájar Martón, Montserrat; Garcia-Gutierrez, Ricardo; Floriach, Genís (2018-01-01)
Capítol de llibre
Accés restringit per política de l'editorialThe limitations of satellites create a large gap in assistive directional technologies, especially indoors. The methods and advances in alternate directional technologies is allowing for new systems to fill the gaps caused ... -
Prototyping with SDR: a quick way to play with next-gen communications systems
Baranda Hortigüela, Jorge; Henarejos Hernández, Pol; Grunenberger, Yan; Nájar Martón, Montserrat (2011)
Comunicació de congrés
Accés obertAbstract—In this paper we present our approach regarding the implementation of new wireless radio receiver exploiting filterbank techniques, using a software-development driven approach. Since most of the common radio ... -
Radio context awareness and applications
Reggiani, Luca; Fiorina, Jocelyn; Gezici, Sinan; Morosi, Simone; Nájar Martón, Montserrat (2013)
Article
Accés obertThe context refers to “any information that can be used to characterize the situation of an entity, where an entity can be a person, place, or physical object.” Radio context awareness is defined as the ability of detecting ... -
REAVALUACIÓ
Nájar Martón, Montserrat; Pagès Zamora, Alba Maria; Riba Sagarra, Jaume; Vázquez Grau, Gregorio (Universitat Politècnica de Catalunya, 2022-07-05)
Examen
Accés restringit a la comunitat UPC -
Relay subset selection in cognitive networks with imperfect CSI and individual power constraints
Nájar Martón, Montserrat; Blanco, Luis (Institute of Electrical and Electronics Engineers (IEEE), 2015)
Text en actes de congrés
Accés obertThis paper considers the relay subset selection problem in an underlay cognitive network in which two secondary users communicate assisted by a set of N potential relays. More specifically, this paper deals with the joint ... -
Robust primary user identification using compressive sampling for cognitive radios
Lagunas Targarona, Eva; Nájar Martón, Montserrat (Institute of Electrical and Electronics Engineers (IEEE), 2014)
Text en actes de congrés
Accés restringit per política de l'editorialIn cognitive radio (CR), the problem of limited spectral resources is solved by enabling unlicensed systems to opportunistically utilize the unused licensed bands. Compressive Sensing (CS) has been successfully applied to ...