Results 11 to 20 of about 790,476 (361)

Concept of multistage discrete fourier transform without performing multiplications

open access: yesJournal of Physics: Conference Series, 2021
The issues related to the development and research of digital methods and algorithms for the discrete Fourier transform, which do not require algorithmic multiplication operations, are considered.
A. Yu. Burova
semanticscholar   +1 more source

Discrete Fourier transform and permutations [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2019
It is well known that the magnitudes of the coefficients of the discrete Fourier transform (DFT) are invariant under certain operations on the input data. In this paper, the effects of rearranging the elements of an input data on its DFT are studied.
S. Hui, S.H. Żak
doaj   +1 more source

Digital signal processing in telecommunications based on parametric discrete Fourier transform [PDF]

open access: yesITM Web of Conferences, 2019
A generalization of the discrete Fourier transform in the form of a parametric discrete Fourier transform is proposed. The analytical and stochastic properties of the introduced discrete transformation are investigated.
Ponomareva Olga   +2 more
doaj   +1 more source

The discrete fractional Fourier transform [PDF]

open access: yesIEEE Transactions on Signal Processing, 1999
Summary: We propose and consolidate a definition of the discrete fractional Fourier transform that generalizes the discrete Fourier transform (DFT) in the same sense that the continuous fractional Fourier transform generalizes the continuous ordinary Fourier transform.
Candan, C., Kutay, M. A., Ozaktas, H. M.
openaire   +6 more sources

Sliding signal processing in telecommunication networks based on two-dimensional discrete Fourier transform [PDF]

open access: yesITM Web of Conferences, 2019
A method of vertical sliding processing of two-dimensional discrete signals in the spatial frequency domain is proposed — a method of fast vertically sliding two-dimensional discrete Fourier transform.
Ponomarev Vladimir   +3 more
doaj   +1 more source

Modified discrete Fourier transform algorithm for protection of shunt compensated distribution line

open access: yesElectrical engineering & Electromechanics, 2023
Introduction. The response time of the relay plays vital role when fault occurs on the line. Various algorithms are adopted to increase the sampling rate of the relay which, in turn, improves the response time. Methods.
A. Jani, V. H. Makwana
doaj   +1 more source

A Developed Discrete Fourier Transform based Cryptosystem [PDF]

open access: yesKirkuk Journal of Science, 2016
This paper provides a developed cryptosystem for data encryption based on using the Discrete Fourier Transform (DFT). The encryption side using the DFT method for performing the main security development that is considered as the main encryption process ...
Ashty M. Aaref
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

BFT—Low-Latency Bit-Slice Design of Discrete Fourier Transform

open access: yesJournal of Low Power Electronics and Applications, 2023
Structures for the evaluation of fast Fourier transforms are important components in several signal-processing applications and communication systems. Their capabilities play a key role in the performance enhancement of the whole system in which they are
Cataldo Guaragnella   +2 more
doaj   +1 more source

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

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