L'objectiu del grup és desenvolupar activitats de recerca en l'àmbit dels circuits i sistemes de comunicació. Aquest grup aborda l'anàlisi i el disseny de circuits en els seus vessants: lineals, no lineals, variants, invariants i commutats amb paràmetres concentrats o distribuïts mitjançant eines convencionals o desenvolupades específicament. També es duen a terme estudis d'estabilitat i bifurcacions en aquests circuits. De forma especialment significativa, en el grup es desenvolupen tècniques de baix consum per a receptors de radiocomunicacions amb modulacions convencionals, d'espectre eixamplat i UWB i es dissenyen sistemes de comunicació sobre aquesta base, amb èmfasi en xarxes de sensors. Es treballa en l'estudi i la modelització del microscopi de força atòmica, descrit per equacions formalment idèntiques a les de la teoria de circuits i s'exploren tècniques per millorar les seves prestacions.

El objetivo del grupo es desarrollar actividades de investigación en el ámbito de los circuitos y sistemas de comunicación. Este grupo aborda el análisis y el diseño de circuitos en sus vertientes: lineales, no lineales, variantes, invariantes y conmutados con parámetros concentrados o distribuidos mediante herramientas convencionales o desarrolladas específicamente. También se realizan estudios de estabilidad y bifurcaciones en estos circuitos. En el grupo se desarrollan técnicas de bajo consumo para receptores de comunicaciones con modulaciones convencionales, de espectro ensanchado y UWB y se diseñan sistemas de comunicación sobre esta base.

The aim of the research group is to carry out research related to communication circuits and systems. This group focuses on circuit analysis and design. Specifically, linear, nonlinear, variant, invariant and switched circuits with concentrated or distributed parameters are addressed making use of conventional or specifically developed techniques. Stability and bifurcation analysis of this kind of circuits is carried out. Low power techniques for communication receivers making use of conventional, spread spectrum and UWB modulations are developed and communication systems are designed on this base.

The aim of the research group is to carry out research related to communication circuits and systems. This group focuses on circuit analysis and design. Specifically, linear, nonlinear, variant, invariant and switched circuits with concentrated or distributed parameters are addressed making use of conventional or specifically developed techniques. Stability and bifurcation analysis of this kind of circuits is carried out. Low power techniques for communication receivers making use of conventional, spread spectrum and UWB modulations are developed and communication systems are designed on this base.

Recent Submissions

  • A model for a multiresolution time series database system 

    Llusà Serra, Aleix; Escobet Canal, Teresa; Vila Marta, Sebastià (WSEAS Press, 2013)
    Conference report
    Open Access
    In this paper we propose a model for multiresolution time series database management systems. Thismodel stores compactly a time series and manages consistently its temporal dimension. This is achieved byextracting different ...
  • A survey on modulation techniques in molecular communication via diffusion 

    Kuran, Mehmet Sükrü; Yilmaz, Hüseyin Birkan; Demirkol, Ilker Seyfettin; Farsad, Nariman; Goldsmith, Andrea (Institute of Electrical and Electronics Engineers (IEEE), 2020-12-31)
    Article
    Open Access
    This survey paper focuses on modulation aspects of molecular communication, an emerging field focused on building biologically-inspired systems that embed data within chemical signals. The primary challenges in designing ...
  • Dynamic buffer sizing and pacing as enablers of 5G low-latency services 

    Irazabal Bengoa, Mikel; López Aguilera, M. Elena; Demirkol, Ilker Seyfettin; Nikaein, Navid (2020-08-17)
    Article
    Open Access
    3GPP standards organization is performing an impressive effort trying to reach sub-millisecond latencies for 5G. However, such efforts may become fruitless if exogenously generated delays at transport layer are not considered. ...
  • Superregeneration revisited: from principles to current applications 

    Palà Schönwälder, Pere; Bonet Dalmau, Jordi; Águila López, Francisco del; Moncunill Geniz, Francesc Xavier; Giralt Mas, Ma. Rosa (2020-02-01)
    Article
    Open Access
    Wireless communications play a central role in our modern connected lives; at the same time, they constitute a very broad and deep area of research. The elements that make wireless communications possible are a transmitter, ...
  • Signal and noise power spectra in superregenerative oscillators 

    Bonet Dalmau, Jordi; Palà Schönwälder, Pere; Moncunill Geniz, Francesc Xavier; Águila López, Francisco del; Giralt Mas, Ma. Rosa (Institute of Electrical and Electronics Engineers (IEEE), 2019)
    Conference lecture
    Open Access
    This paper presents a method to quantify noise in superregenerative oscillators. A frequency domain technique, originally intended to determine the signal response, can also be used to determine the noise response. This ...
  • An interdisciplinary approach to motivate students to learn digital systems and computing engineering 

    Tarres Puertas, Marta Isabel; López Riera, Alexis; Palà Schönwälder, Pere; Vila Marta, Sebastià (Tempus Publications, 2019-03-01)
    Article
    Restricted access - publisher's policy
    We report a new learning approach in collaborative learning-by doing, real-world team-based project in two ICT courses: DigitalSystems and Computing Engineering, conducted at Universitat Polite`cnica de Catalunya. Data ...
  • Optimal batch scheduling of a multiproduct dairy process using a combined optimization/constraint programming approach 

    Escobet Canal, Teresa; Puig Cayuela, Vicenç; Quevedo Casín, Joseba Jokin; Palà Schönwälder, Pere; Romera Formiguera, Juli; Adelman, Winfried (Pergamon Press, 2019-03-08)
    Article
    Open Access
    This paper presents the optimal batch scheduling of a multi-product dairy process using an approach that combines optimization and constraint programming techniques. A suitable model describing the subprocesses and production ...
  • Creació de materials docents per assignatures de telecomunicacions amb eines informàtiques de fàcil utilització 

    Giralt Mas, Ma. Rosa; Águila López, Francisco del (Universitat de Barcelona. Edicions i Publicacions, 2006)
    Conference report
    Open Access
    Seguint l’enfocament de l’Espai Europeu d’Educació Superior (EEES), on es valora l’aprenentatge cooperatiu i basat en projectes, es troba interessant disposar de materials docents, per al treball individual o col·lectiu, ...
  • An effective strategy of real-time vision-based control for a Stewart platform 

    Rossell Garriga, Josep Maria; Vicente Rodrigo, Jesús; Rubió Massegú, Josep; Barcons Xixons, Víctor (2018)
    Conference report
    Open Access
    A Stewart platform is a kind of parallel robot which can be used for a wide variety of technological and industrial applications. In this paper, a Stewart platform designed and assembled at the Universitat Polit`ecnica de ...
  • Monitoring and optimal management approaches to reduce water and energy consumption in milk processing processes 

    Quevedo Casín, Joseba Jokin; Puig Cayuela, Vicenç; Escobet Canal, Teresa; Palà Schönwälder, Pere (2017)
    Conference report
    Open Access
    This paper proposes a methodology for the monitoring and optimal management of milk processing processes to reduce water and energy consumption. First, the key variables that should be measured to characterize the water/energy ...
  • A discrete-time approach to the steady-state and stability analysis of distributed nonlinear autonomous circuits 

    Bonet Dalmau, Jordi; Palà Schönwälder, Pere; Miró Sans, Joan Maria (Institute of Electrical and Electronics Engineers (IEEE), 1998)
    Conference report
    Open Access
    We present a direct method for the steady-state and stability analysis of autonomous circuits with transmission lines and generic nonlinear elements. With the discretization of the equations that describe the circuit in ...
  • A discrete-time technique for the steady-state analysis of nonlinear class-E amplifiers 

    Águila López, Francisco del; Palà Schönwälder, Pere; Molina Gaudó, Pilar; Mediano Heredia, Arturo (Institute of Electrical and Electronics Engineers (IEEE), 2007-06-11)
    Article
    Open Access
    Switched circuits are widely used, particularly for power electronic applications in which efficiency is important. Of these applications, the class-E amplifier has been given particular attention, since it is theoretically ...

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