Browsing by Subject "Modulació (Electrònica)"
Now showing items 1-20 of 79
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3D polarized modulation: system analysis and performance
(2018-06-26)
Article
Open AccessIn 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
(Institute of Electrical and Electronics Engineers (IEEE), 2000)
Conference report
Open AccessA 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
(2014)
Conference report
Restricted access - publisher's policyThis 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
(2015-08-01)
Article
Open Access -
A novel bidirectional multilevel boost-buck dc-dc converter
(2009-09)
Conference lecture
Open AccessA novel noninverting boost-buck dc-dc converter topology is presented, applicable when both sides of the converter need to have the same grounding. It is based on the back-to-back connection of two n-level diode-clamped ... -
A novel three-dimensional sigma–delta modulation for high-switching-frequency three-phase four-wire active power filters
(2024-02-01)
Article
Open AccessThis 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
(Universitat Politècnica de Catalunya, 2016-05-03)
Bachelor thesis
Open Access
Covenantee: Technische Universität DresdenThis 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
(Institute of Electrical and Electronics Engineers (IEEE), 2020-12-31)
Article
Open AccessThis 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
(2012)
Conference report
Open AccessGeneralized 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
(2021-04-02)
Article
Open AccessSince 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
(Universitat Politècnica de Catalunya, 2018-05)
Bachelor thesis
Open AccessEn 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 ... -
Bandwidth extension techniques for high-efficiency power amplifiers
(Universitat Politècnica de Catalunya, 2011-04-15)
Doctoral thesis
Open AccessAquesta tesi tracta sobre amplificació de potència d'alt rendiment de senyals variables en el temps; concretament, tracta sobre conversió de potència eficient (amb mínimes pèrdues) de tensions DC continues en senyals de ... -
Cantilever dynamics in amplitude modulation AFM: continuous and discontinuous transitions
(2010-06-21)
Article
Open AccessTransitions 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
(2013-10-01)
Article
Restricted access - publisher's policyThis 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
(Institute of Electrical and Electronics Engineers (IEEE), 2016)
Conference report
Restricted access - publisher's policyThis 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 ... -
Characterization of dynamics and power handling of RF MEMS using vector measurement techniques
(IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC, 2004-11-30)
Article
Open AccessThis paper proposes a new method to measure dynamics and power handling of RF microelectromechanical systems (MEMS) devices based on a mobile membrane. The method uses in-phase/quadrature demodulation of an RF signal ... -
CMOS photonic devices characterization and quantum computing architecture design
(Universitat Politècnica de Catalunya, 2018-02-07)
Bachelor thesis
Open Access
Covenantee: Massachusetts Institute of TechnologyQuantum 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 ... -
Colorless FSK Demodulation and Detection With Integrated Fabry-Perot-Type SOA/REAM
(2010-06-01)
Article
Open AccessA receiver for optical frequency modulated signals, based on colorless demodulation and detection, is presented. An integrated combination of semiconductor optical amplifier (SOA) and reflective electroabsorption modulator ... -
Comparison of single carrier and OFDM with back-propagation and RF pilot tone for a 9x224Gb/s POLMUX-16QAM system
(2011)
Conference report
Restricted access - publisher's policyThe performance of single carrier and OFDM is compared when nonlinear compensation at the DSP receiver is employed. We show that the joint use of RF-pilot and back-propagation adds further improvement to OFDM performance.
