Exploració per tema "Modulation (Electronics)"

Ara es mostren els items 1-20 de 64

    • 3D polarized modulation: system analysis and performance 

      Henarejos Hernández, Pol; Pérez Neira, Ana Isabel (2018-06-26)
      Article
      Accés obert
      In this paper we present a novel modulation technique for dual polarization communication systems, which reduces the error rate compared with the existent schemes. This modulation places the symbols in a 3D constellation, ...

    • A fast OFDM-CDMA user demultiplexing architecture 

      Marti Puig, Pere; Sala Álvarez, José (Institute of Electrical and Electronics Engineers (IEEE), 2000)
      Text en actes de congrés
      Accés obert
      A fast algorithm based on a butterfly structure is presented that demultiplexes the symbols of a particular type of MC-MA (multi-carrier multiple-access) modulation previously proposed for indoor radio communications. A ...

    • A modified voltage balancing sorting algorithm for the modular multilevel converter: Evaluation for staircase and phase-disposition PWM 

      Darus, Rosheila; Pou Félix, Josep; Konstantinou, Georgios; Ceballos Recio, Salvador; Agelidis, Vassilios (2014)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper introduces a low complexity implementation of the voltage balancing sorting algorithm to reduce the switching frequency of the power devices in modular multilevel converters (MMCs). Two modulation techniques are ...

    • A modified voltage balancing sorting algorithm for the modular multilevel converter: Evaluation for staircase and phase-disposition PWM 

      Darus, Rosheila; Pou Félix, Josep; Konstantinou, Georgios; Ceballos Recio, Salvador; Picas Prat, Ricard; Agelidis, Vassilios (2015-08-01)
      Article
      Accés obert

    • A novel pulsewidth modulation to operate a bidirectional two-stage dc-ac converter with high-frequency isolation in discontinuous conduction mode for photovoltaic applications 

      Mata Dumenjó, Montserrat; Busquets Monge, Sergio; Diest, Jaume; Rocabert Delgado, Joan; Barenys, Mireia; Nicolás Apruzzese, Joan; Salaet Pereira, Juan Fernando (2009)
      Comunicació de congrés
      Accés obert

    • A novel three-dimensional sigma–delta modulation for high-switching-frequency three-phase four-wire active power filters 

      Lumbreras Carrasco, David; Zaragoza Bertomeu, Jordi; Lamich Arocas, Manuel; Berbel Artal, Néstor; Romero Cadaval, Enrique (2024-02-01)
      Article
      Accés obert
      This article presents a new modulation technique called three-dimensional sigma–delta (3D-S¿ ) modulation for high-frequency three-leg four-wire voltage source converters (VSCs) that use wide-bandgap (WBG) semiconductors. ...

    • A resource management scheme for multi-user GFDM with adaptive modulation in frequency selective fading channels 

      Tornés Molins, Bernat (Universitat Politècnica de Catalunya, 2016-05-03)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Technische Universität Dresden
      This final project focus on designing and evaluating a resource management scheme for a multi-user generalized frequency division multiplexing (GFDM) system, when a frequency selective fading channel and adaptive modulation ...

    • 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
      Accés obert
      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 ...

    • Adaptive generalized space shift keying (GSSK) modulation for MISO channels: a new method for high diversity and coding gains 

      Ntontin, Konstantinos; Di Renzo, Marco; Pérez Neira, Ana Isabel; Verikoukis, Christos (2012)
      Text en actes de congrés
      Accés obert
      Generalized Space Shift Keying (GSSK) modulation is a recently proposed low-complexity concept for Multiple-Input- Multiple-Output (MIMO) wireless systems. GSSK modulation is a generalized version of Space Shift Keying ...

    • Advances in dynamic AFM: from nanoscale energy dissipation to material properties in the nanoscale 

      Santos Hernández, Sergio; Gadelrab, Karim Raafat; Lai, Chia-Yun; Olukan, Tuza; Font Teixidó, Josep; Barcons Xixons, Víctor; Verdaguer Prats, Albert; Chiesa, Matteo (2021-04-02)
      Article
      Accés obert
      Since the inception of the atomic force microscope (AFM), dynamic methods (dynamic atomic force microscopy) have been very fruitful by establishing methods to quantify dissipative and conservative forces in the nanoscale ...

    • Anàlisis de diferents tècniques de modulació en un convertidor de tres nivells 

      Navarro Ruiz, Adrià (Universitat Politècnica de Catalunya, 2018-05)
      Treball Final de Grau
      Accés obert
      En el següent projecte de final de grau, realitzarem la posada en marxa de conversor NPC del laboratori d’electrònica de potència, de la Universitat Politècnica de Catalunya, facultat ESEIAAT, a l’edifici TR2. Farem una ...

    • Cantilever dynamics in amplitude modulation AFM: continuous and discontinuous transitions 

      Santos Hernández, Sergio; Barcons Xixons, Víctor; Font Teixidó, Josep; Thomson, Neil H. (2010-06-21)
      Article
      Accés obert
      Transitions between the attractive and the repulsive force regimes for amplitude modulation atomic force microscopy (AFM) can be either discontinuous, with a corresponding jump in amplitude and phase, or continuous and ...

    • Capacitor voltage balancing in a three-level-converter-based energy storage system 

      Burusteta, Sendoa; Pou Félix, Josep; Ceballos Recio, Salvador; Marino, Iker; Anzola, Jose Angel; Agelidis, Vassilios (2013-10-01)
      Article
      Accés restringit per política de l'editorial
      This paper discusses a grid-connected energy storage system based on two three-level (3L) converters: a DC-DC one and a neutral-point-clamped inverter. When compared to a system using standard two-level converters, the ...

    • Capacity analysis of WCC-FBMC/OQAM systems 

      Cans, Marius; Pérez Neira, Ana Isabel; Kliks, Adrian; Bodinier, Quentin; Faouzi, Bader (Institute of Electrical and Electronics Engineers (IEEE), 2016)
      Text en actes de congrés
      Accés restringit per política de l'editorial
      This paper evaluates the capacity of weighted circularly convolved FBMC/OQAM systems. A rigorous mathematical model is derived to calculate the increase of capacity that can be obtained thanks to the lattice structure of ...

    • CMOS photonic devices characterization and quantum computing architecture design 

      De La Fuente García, Darío (Universitat Politècnica de Catalunya, 2018-02-07)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Massachusetts Institute of Technology
      Quantum computing is an exciting new technology that will allow to solve some problems that current computers cannot do. However, most of the technologies being researched for quantum computing need ultra-low temperatures ...

    • Current balancing strategy in parallel-connected legs of power inverters 

      Pou Félix, Josep; Zaragoza Bertomeu, Jordi; Capellá Frau, Gabriel José; Gabiola, Igor; Salvador, Ceballos; Robles Sestafe, Eider (EPE Association, 2009-10-31)
      Comunicació de congrés
      Accés obert
      The parallel connection of inverter legs is a way to increase the output currents and thus the converter rated power. The connection is made by inductors and a critical issue is to achieve balanced currents among the legs. ...

    • Current-balancing technique for interleaved voltage source inverters with magnetically coupled legs connected in parallel 

      Capellá Frau, Gabriel José; Pou Félix, Josep; Ceballos Recio, Salvador; Zaragoza Bertomeu, Jordi; Agelidis, Vassilios (Institute of Electrical and Electronics Engineers (IEEE), 2015-03-01)
      Article
      Accés obert
      Connecting legs in parallel in a voltage source inverter is a way to increase the output current and, thus, its rated power. The connection can be made using either coupled or uncoupled inductors, and achieving an even ...

    • Desenvolupament de la modulació SHE en un inversor NPC de 3 nivells 

      Filbà Martínez, Àlber (Universitat Politècnica de Catalunya, 2011-03)
      Projecte/Treball Final de Carrera
      Accés obert
      En el present projecte final de carrera s’ha treballat en l’aplicació de la modulació Selective Harmonic Elimination en inversors de tres nivells de la topologia Neutral Point Clamped. La modulació Selective Harmonic ...

    • Design and implementation of a radio wake up reciber 

      Vila Bagaria, David (Universitat Politècnica de Catalunya, 2018-06)
      Treball Final de Grau
      Accés restringit per acord de confidencialitat
      Wi-Fi is the facto standard protocol for most indoor personal communication devices. Despite this, its usage in IoT solutions is limited, mainly due to the high cost and elevated power consumption of Wi-Fi transceivers. ...

    • Design of a modular instrument with reconfigurable Input/Output for test and measurement 

      Dinar Villarreal, Anouar (Universitat Politècnica de Catalunya, 2018-02)
      Projecte Final de Màster Oficial
      Accés restringit per acord de confidencialitat
      The purpose of this Master Thesis is the study of the capabilities offered by the National Instruments sbRIO-9651 System-On-Module, to determine if it?s suitable for the implementation of automatic test equipment instruments. ...