Results 21 to 30 of about 153,898 (342)

FFT-based simulation using a reduced set of frequencies adapted to the underlying microstructure [PDF]

open access: yesComputer Methods in Materials Science, 2021
Instead of the classical finite element (FE) based microstructure simulation, a Fast Fourier transform (FFT) based microstructure simulation, introduced by Moulinec and Suquet (1994, 1998), also enables the computation of highly resolved microstructural ...
Christian Gierden   +3 more
doaj   +1 more source

Neuroscience Approach to Situational Awareness: A Research on Marine Navigation

open access: yesJournal of Eta Maritime Science, 2023
This study investigates the cognitive levels of tugboat captains, key players during port manoeuvres, which are a crucial part of sea navigation. The objective is to reveal the main neurophysiological findings related to the measurements of the tugboat ...
Serkan Kahraman   +3 more
doaj   +1 more source

A 64-point Fourier transform chip for high-speed wireless LAN application using OFDM [PDF]

open access: yes, 2004
In this article, we present a novel fixed-point 16-bit word-width 64-point FFT/IFFT processor developed primarily for the application in the OFDM based IEEE 802.11a Wireless LAN (WLAN) baseband processor.
Jagdhold, Ulrich   +2 more
core   +2 more sources

Comparison of FFT-Based and DCT-Based Channel Estimation and ECC for OFDM System [PDF]

open access: yesEngineering and Technology Journal, 2015
Orthogonal Frequency Division Multiplexing (OFDM) has become a popular modulation method for high data rate wireless communications. In this paper, two schemes are proposed.
Awatif Ali Jafaar
doaj   +1 more source

Low-Complexity Super-Resolution Detection for Range-Vital Doppler Estimation FMCW Radar [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2021
This paper proposes low-complexity super-resolution detection for range-vital Doppler estimation frequency-modulated continuous wave (FMCW) radar. In regards to vital radar, and in order to estimate joint range and vital Doppler information such as the ...
Bongseok Kim   +4 more
doaj   +1 more source

Advancing Fault Diagnosis for Parallel Misalignment Detection in Induction Motors Based on Convolutional Neural Networks

open access: yesJurnal EECCIS (Electrics, Electronics, Communications, Controls, Informatics, Systems), 2023
Maintenance of machines is highly necessary to prolong the operational lifespan of induction motors. Prioritizing preventive measures is crucial in order to prevent more significant damage to the machinery.
Hanif Adi Rahmawan   +3 more
doaj   +1 more source

git-sunao/fft-extended-source: v1.0.0

open access: yes, 2022
This is the first release of fft-extended ...
git-sunao
core   +1 more source

Fast Fourier transform for fingerprint enhancement and features extraction with adaptive block size using orientation fields [PDF]

open access: yesITM Web of Conferences, 2022
Extracting minutiae from a digital fingerprint is a crucial step in a fingerprint-based recognition systems. This work deals with poor-quality fingerprint images containing broken ridges.
Amina Ait Aoudia   +2 more
doaj   +1 more source

An optimum design of frequency domain processing for image deblurring system

open access: yesDianzi Jishu Yingyong, 2019
In practical applications, it is difficult to make blurred images clear in spatial domain. Therefore, it is necessary to transform the image in frequency domain and implement image deblurring in frequency domain.
Li Jingjing, Liu Yunfei
doaj   +1 more source

FFT size optimization for LTE RoF in nonlinear fibre propagation [PDF]

open access: yes, 2012
This papers investigates the performance of the fast Fourier transform (FFT) sizes- 64, 128, 256, 512 and 1024 for the orthogonal frequency division multiplexing (OFDM) scheme in 3 rd generation partnership program (3GPP)-long term evolution (LTE) and ...
Ghassemlooy, Zabih   +7 more
core   +1 more source

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