Publications related to Discrete-time Fourier transform

An Adaptive Sublinear-Time Block Sparse Fourier Transform

Volkan Cevher, Mikhail Kapralov, Jonathan Mark Scarlett, Amir Zandieh

The problem of approximately computing the

k

dominant Fourier coefficients of a vector

X

quickly, and using few samples in time domain, is known as the Sparse Fourier Transform (sparse FFT) problem. A long line of work on the sparse FFT has resulted in ...

2017

Study on the cross-correlation of GNSS signals and typical approximations

Pierre-André Farine, Cyril Botteron, Jérôme Leclère

In global navigation satellite system (GNSS) receivers, the first signal processing stage is the acquisition, which consists in detecting the received GNSS signals and determining the associated code delay and Doppler frequency by means of correlations wit ...

Springer Verlag2017

Dictionary Learning Based on Sparse Distribution Tomography

Michaël Unser, Pedram Pad

We propose a new statistical dictionary learning algorithm for sparse signals that is based on an α-stable innovation model. The parameters of the underlying model—that is, the atoms of the dictionary, the sparsity index α and the dispersion of the transfo ...

P. Pad2017

Isogeometric Analysis And Proper Orthogonal Decomposition For The Acoustic Wave Equation

Alfio Quarteroni, Shengfeng Zhu

Discretization methods such as finite differences or finite elements were usually employed to provide high fidelity solution approximations for reduced order modeling of parameterized partial differential equations. In this paper, a novel discretization te ...

Edp Sciences S A2017

Audio inpainting with similarity graphs

Nathanaël Perraudin

In this contribution, we present a method to compensate for long duration data gaps in audio signals, in particular music. To achieve this task, a similarity graph is constructed, based on a short-time Fourier analysis of reliable signal segments, e.g. the ...

2016

Magnetic resonance spectroscopic imaging at superresolution: Overview and perspectives

Dimitri Nestor Alice Van De Ville, Jeffrey Adam Kasten, François Lazeyras

The notion of non-invasive, high-resolution spatial mapping of metabolite concentrations has long enticed the medical community. While magnetic resonance spectroscopic imaging (MRSI) is capable of achieving the requisite spatio-spectral localization, it ha ...

Academic Press Inc Elsevier Science2016

Stable Simulation of Nonlinearly Loaded Lossy Transmission Lines with Time Marching Approach

Akiyoshi Tatematsu

A stable method for the analysis of lossy transmission lines with nonlinear loads is presented. The simulation employs the time marching (TM) method for solving the convolution equations in the time domain. To cope with the late-time instability of the TM ...

Ieee2016

Enhanced current and voltage regulators for stand-alone applications

Federico De Bosio

State feedback decoupling permits to achieve a better dynamic response for Voltage Source in stand-alone applications. The design of current and voltage regulators is performed in the discrete-time domain since it provides better accuracy and allows direct ...

Ieee2016

An Improved Approach for the Calculation of the Transient Ground Resistance Matrix of Multiconductor Lines

The general integral expressions for the elements of the ground impedance matrix do not have an analytical inverse transform in the time domain. Therefore, the ground transient resistance of a multiconductor line is commonly evaluated in the time domain by ...

Ieee-Inst Electrical Electronics Engineers Inc2016

Undecidability through Fourier series

In computability theory a variety of combinatorial systems are encountered (word problems, production systems) that exhibit undecidability properties. Here we seek such structures in the realm of Analysis, more specifically in the area of Fourier Analysis. ...

Elsevier Science Bv2016

Discrete-time Fourier transform

Graph Chatbot

Chat with Graph Search

An Adaptive Sublinear-Time Block Sparse Fourier Transform

Study on the cross-correlation of GNSS signals and typical approximations

Dictionary Learning Based on Sparse Distribution Tomography

Isogeometric Analysis And Proper Orthogonal Decomposition For The Acoustic Wave Equation

Audio inpainting with similarity graphs

Magnetic resonance spectroscopic imaging at superresolution: Overview and perspectives

Stable Simulation of Nonlinearly Loaded Lossy Transmission Lines with Time Marching Approach

Enhanced current and voltage regulators for stand-alone applications

An Improved Approach for the Calculation of the Transient Ground Resistance Matrix of Multiconductor Lines

Undecidability through Fourier series

Enhanced current and voltage regulators for stand-alone applications

Undecidability through Fourier series

Stable Simulation of Nonlinearly Loaded Lossy Transmission Lines with Time Marching Approach

An Improved Approach for the Calculation of the Transient Ground Resistance Matrix of Multiconductor Lines

Study on the cross-correlation of GNSS signals and typical approximations

Isogeometric Analysis And Proper Orthogonal Decomposition For The Acoustic Wave Equation

Audio inpainting with similarity graphs

Magnetic resonance spectroscopic imaging at superresolution: Overview and perspectives

An Adaptive Sublinear-Time Block Sparse Fourier Transform

Dictionary Learning Based on Sparse Distribution Tomography