Results 1 to 10 of about 1,921,662 (293)

Discrete Fourier Transform Method for Discrimination of Digital Scintillation Pulses in Mixed Neutron-Gamma Fields [PDF]

open access: yesIEEE Transactions on Nuclear Science, 2016
A discrete Fourier transform method (DFTM) for discrimination between the signal of neutrons and gamma rays in organic scintillation detectors is presented. The method is based on the transformation of signals into the frequency domain using the sine and
M. Safari   +4 more
semanticscholar   +1 more source

Discrete Fourier transform based frequency characteristics of iterative learning control for linear discrete-time systems

open access: yesAdvances in Difference Equations, 2019
For discrete-time iterative learning control systems, the discrete Fourier transform (DFT) is a powerful technique for frequency analysis, and Toeplitz matrices are a typical tool for the system input–output transmission.
Xiaohui Li, Xiaoe Ruan
doaj   +1 more source

On companding techniques for PAPR reduction in DCT SC-FDMA system in the presence of CFOs

open access: yesAlexandria Engineering Journal, 2023
In the single carrier frequency division multiple access (SC-FDMA) system, the use of discrete cosine transform (DCT) instead of discrete Fourier transform (DFT) has shown improved bit error rate (BER) performance.
Naim Ben Ali   +5 more
doaj   +1 more source

Hilbert-Twin – A Novel Hilbert Transform-Based Method To Compute The Elastic Modulus In High-Resolution Mechanical Spectroscopy HRMS

open access: yesArchives of Metallurgy and Materials, 2015
A novel Hilbert-twin (H-twin) method is introduced as an alternative method for the computation of the resonant frequency for exponentially damped free decays embedded in noise.
Majewski M., Magalas L.B.
doaj   +1 more source

Fourier-spectral-method implementation of deformation in the phase-field crystal model [PDF]

open access: yesMATEC Web of Conferences, 2018
The phase-field crystal (PFC) method is a promising computational model with atomistic resolution and diffusive time scale. In this work, the Fourier-spectral-method (FSM) scheme was developed for evaluating the PFC free energy of a system subjected ...
Pisutha-Arnond Nirand
doaj   +1 more source

2D Discrete Fourier Transform with simultaneous edge artifact removal for real-time applications [PDF]

open access: yesInternational Conference on Field-Programmable Technology, 2015
Two-Dimensional (2D) Discrete Fourier Transform (DFT) is a basic and computationally intensive algorithm, with a vast variety of applications. 2D images are, in general, non-periodic, but are assumed to be periodic while calculating their DFTs.
Faisal Mahmood   +3 more
semanticscholar   +1 more source

Discrete Fourier Transform in Unmasking Deepfake Images: A Comparative Study of StyleGAN Creations

open access: yesInf.
This study proposes a novel forgery detection method based on the analysis of frequency components of images using the Discrete Fourier Transform (DFT). In recent years, face manipulation technologies, particularly Generative Adversarial Networks (GANs),
V. N. Convertini   +4 more
semanticscholar   +1 more source

Virtual Variable Sampling Discrete Fourier Transform Based Selective Odd-Order Harmonic Repetitive Control of DC/AC Converters

open access: yesIEEE transactions on power electronics, 2018
This paper proposes a frequency adaptive discrete Fourier transform (DFT) based repetitive control (RC) scheme for dc/ac converters. By generating infinite magnitude on the interested harmonics, the DFT-based RC offers a selective harmonic scheme to ...
Zhichao Liu   +3 more
semanticscholar   +1 more source

Compressed Wideband Spectrum Sensing Based on Discrete Cosine Transform

open access: yesThe Scientific World Journal, 2014
Discrete cosine transform (DCT) is a special type of transform which is widely used for compression of speech and image. However, its use for spectrum sensing has not yet received widespread attention.
Yulin Wang, Gengxin Zhang
doaj   +1 more source

Design and Simulation of a Low-Power and High-Speed Fast Fourier Transform for Medical Image Compression

open access: yesEngineering Proceedings, 2023
For front-end wireless applications in small battery-powered devices, discrete Fourier transform (DFT) is a critical processing method for discrete time signals. Advanced radix structures are created to reduce the impact of transistor malfunction.
Ernest Ravindran Ramaswami Sachidanandan   +2 more
doaj   +1 more source

Home - About - Disclaimer - Privacy