Ara es mostren els items 1-20 de 133

  • A bit more on the ability of adaptation of speech signals 

    Ballesteros, Dora Maria; Moreno Aróstegui, Juan Manuel (2013-03)
    Article
    Accés obert
    Some traditional digital signal processing techniques encompass enhancement, filtering, coding, compression, detection and recognition. Recently, it has been presented a new hypothesis of signal processing known as the ...
  • Access modes based on coordinated multipoint for relay transmissions in 4G systems 

    Lagén Morancho, Sandra (Universitat Politècnica de Catalunya, 2011-12-22)
    Projecte/Treball Final de Carrera
    Accés obert
    English: the objective of this project is to explore and evaluate new system architectures for next generation cellular systems, by developing new system deployments and then deriving algorithms for the resource allocation ...
  • A Collaborative Protocol for Private Retrieval of Location-Based Information 

    Rebollo Monedero, David; Forné Muñoz, Jorge; Subirats Maté, Laia; Solanas, Agustí; Martínez-Ballasté, Antoni (IADIS Press, 2009)
    Comunicació de congrés
    Accés obert
    Privacy and security are paramount for the proper deployment of location-based services (LBSs). We present a novel protocol based on user collaboration to privately retrieve location-based information from an LBS provider. ...
  • ADC Quantization Requirements 

    Riba Sagarra, Jaume; Lamarca Orozco, M. Meritxell; Rey Micolau, Francesc; Sala Álvarez, José; Vázquez Grau, Gregorio; Villares Piera, Nemesio J. (2000-06)
    Report de recerca
    Accés obert
    In this document, we analyze the impact of the quantization at the input of the demultiplexer. The required number of bits of the Analog-to-Digital-Converter (ADC) is obtained, along with the corresponding quantization losses.
  • Aerosol lidar intercomparison in the framework of SPALINET-The Spanish lidar network: methodology and results 

    Rocadenbosch Burillo, Francisco; Sicard, Michaël; Molero, Francisco; Guerrero Rascado, Juan Luis; Pedrós, Roberto; Expósito, Francisco Javier; Córdoba Jabonero, Carmen; Bolarín, Jose Miguel; Comerón Tejero, Adolfo; Moreno, José Maria; Navas Guzmán, Francisco; Requena, Alberto; Gil, Manuel; Pedro Díaz, Juan; Martínez Lozano, José Antonio; Alados Arboledas, Lucas; Pujades, Manuel (IEEE Press. Institute of Electrical and Electronics Engineers, 2009-10)
    Article
    Accés obert
    Abstract—A group of eight Spanish lidars was formed in order to extend the European Aerosol Research Lidar Network–Advanced Sustainable Observation System (EARLINET-ASOS)project. This study presents intercomparisons at the ...
  • A family of asymptotically good binary fingerprinting codes 

    Cotrina Navau, Josep; Fernández Muñoz, Marcel (2010-10)
    Article
    Accés restringit per política de l'editorial
    A fingerprinting code is a set of codewords that are embedded in each copy of a digital object with the purpose of making each copy unique. If the fingerprinting code is c-secure with error, then the decoding of a pirate ...
  • A general analysis of the impact of digitization in microwave correlation radiometers 

    Bosch Lluís, Xavier; Ramos Pérez, Isaac; Camps Carmona, Adriano José; Rodríguez Álvarez, Nereida; Valencia Domènech, Enric; Hyuk, Park (2011-06)
    Article
    Accés obert
    This study provides a general framework to analyze the effects on correlation radiometers of a generic quantization scheme and sampling process. It reviews, unifies and expands several previous works that focused on these ...
  • Un algorisme evolutiu multiagent per a problemes d’optimització combinatòria 

    Martínez Navarro, Jesus (Universitat Politècnica de Catalunya, 2005)
    Projecte/Treball Final de Carrera
    Accés obert
  • Amplificador clase F para telefonía móvil celular 

    Sanchez Henckell, Grey Franck (Universitat Politècnica de Catalunya, 2012-07)
    Projecte/Treball Final de Carrera
    Accés obert
    Actualmente, con el rápido crecimiento de las tecnologías de telefonía móvil celular, cada vez se pide más eficiencia energética a los terminales móviles. Para poder satisfacer esta necesidad, este proyecto presenta el ...
  • An algorithm for beat-to-beat heart rate detection from the BCG based on the continuous spline wavelet transform 

    Alvarado Serrano, Carlos; Luna Lozano, Pablo Samuel; Pallàs Areny, Ramon (2016-05-01)
    Article
    Accés obert
    This work describes an algorithm intended to detect the beat-to-beat heart rate from the ballistocardiogram (BCG) obtained from seated subjects. The algorithm is based on the continuous wavelet transform with splines, which ...
  • Anàlisi i implementació de tècniques de formació d'imatge i localització UWB 

    Guardiola Garcia, Marta (Universitat Politècnica de Catalunya, 2008-07-25)
    Projecte/Treball Final de Carrera
    Accés obert
  • Análisis de Técnicas de Gestión de Recursos Radio para Sistemas de Comunicaciones Inalámbricas 

    Luengo Artero, David (Universitat Politècnica de Catalunya, 2005-09)
    Projecte/Treball Final de Carrera
    Accés obert
  • Analysis and interpretation of emulated data traffic in Android platform 

    Camacho Arias, Alejandro (Universitat Politècnica de Catalunya, 2011-10)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  Technische Universität Wien
    [ANGLÈS] Development of a traffic generator (like an Android application) with the ability to emulate multiple traffic types (video, web, online gaming, Skype) and transmit such data to another mobile device, either via ...
  • An Analysis of Space-Time codes/channel codes combination 

    Carrasco Reyes, Rocío (Universitat Politècnica de Catalunya, 2014-09-12)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  École Supérieure d’Electricité
    [ANGLÈS] In wireless communications are used several techniques to improve the reliability of transmitted data. Space-time coding technique (as Alamouti scheme) is one of them. This technique does not necessarily lead to ...
  • A novel strategy for radar imaging based on compressive sensing 

    Tello Alonso, Mª Victoria; López Dekker, Francisco J.; Mallorquí Franquet, Jordi Joan (2008)
    Text en actes de congrés
    Accés obert
    This paper aims at introducing the recent theory of compressive sensing to radar imaging systems in order to retrieve the imaged scene with better resolution and a reduced amount of collected samples. As a result of ...
  • Ant colony optimization for multicasting/broadcasting in wireless ad-hoc networks 

    Hernández Pibernat, Hugo (Universitat Politècnica de Catalunya, 2008-07-09)
    Projecte Final de Màster Oficial
    Accés obert
  • Aplicació d'accés web per a serveis IMS 

    Subirós Pérez, David (Universitat Politècnica de Catalunya, 2010-01)
    Projecte/Treball Final de Carrera
    Accés obert
    Els objectius més importants d’aquest projecte de final de carrera són els següents: Analitzar i entendre l’arquitectura IMS. Entendre la relació, implicacions i contradiccions dels models de desplegament de serveis ...
  • Aplicació mòbil multiplataforma amb accés a un SI 

    Heredia Romero, Cristina (Universitat Politècnica de Catalunya, 2010)
    Projecte/Treball Final de Carrera
    Accés restringit per acord de confidencialitat
  • Application behavior and performance on asymmetrical links 

    Mazarico Altisent, Albert (Universitat Politècnica de Catalunya, 2010-04)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  Lunds universitet
    Nowadays most of the access networks have asymmetrical bit rates; these networks (especially mobile networks) have high delays, packet losses and most often non neglectable jitter. In this degree project, we have studied ...
  • A Programmable UWB-IR Wireless Sensor Node Prototype, Using the Intel WISP Platform 

    Boixadera Planas, Ramon (Universitat Politècnica de Catalunya, 2010-12-15)
    Projecte/Treball Final de Carrera
    Accés obert
    Realitzat a/amb:  Kungliga Tekniska ho?gskolan (Stockholm, Sweden)
    English: Remote sensing and measuring is becoming more important with accelerating advances in technology. The ability to process large amounts of data using the internet and advanced digital signal processing techniques ...