Results 11 to 20 of about 105,617 (259)
Fast Partial Fourier Transform
CoRR, 2020 Given a time series vector, how can we efficiently compute a specified part of Fourier coefficients? Fast Fourier transform (FFT) is a widely used algorithm that computes the discrete Fourier transform in many machine learning applications. Despite its pervasive use, all known FFT algorithms do not provide a fine-tuning option for the user to specify ...
Yong-chan Park, Jun-Gi Jang, U Kang
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Empirical Evaluation of Typical Sparse Fast Fourier Transform Algorithms
IEEE Access, 2021 Computing the Sparse Fast Fourier Transform(sFFT) has emerged as a critical topic for a long time. The sFFT algorithms decrease the runtime and sampling complexity by taking advantage of the signal’s inherent characteristics that a large number of
Zhikang Jiang, Jie Chen, Bin Li
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Harmonic detection of PV power generation system based on DFFT-WT-BP
Dianzi Jishu Yingyong, 2019 The existing FFT-WT algorithm and FFT-BP algorithm have advantages only for the detection of certain specific harmonics in photovoltaic systems. In this paper, the FFT-WT algorithm is improved, and a DFFT-WT algorithm is proposed. The FFT-BP algorithm is
Sun Cheng +5 more
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Advances in Mechanical Engineering, 2019 The rolling element bearing is one of the most critical components in a machine. Vibration signals resulting from these bearings imply important bearing defect information related to the machinery faults.
Hsiung-Cheng Lin, Yu-Chen Ye
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Large-scale 3D fast Fourier transform computation on a GPU
ETRI Journal, 2023 We propose a novel graphics processing unit (GPU) algorithm that can handle a large-scale 3D fast Fourier transform (i.e., 3D-FFT) problem whose data size is larger than the GPU's memory.
Jaehong Lee, Duksu Kim
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OCTAD-S: digital fast Fourier transform spectrometers by FPGA
Earth, Planets and Space, 2017 We have developed a digital fast Fourier transform spectrometer made of an analog-to-digital converter (ADC) and a field-programmable gate array (FPGA).
Kazumasa Iwai +7 more
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Fast Fourier Transform power spectrum of radon activity
Radiation Protection and Environment, 2018 Measurement of outdoor Radon-222 (222Rn) activity at National Atmospheric Research Laboratory (NARL), Gadanki, India, is carried out using Alpha GUARD PQ 2000 PRO from October 2011 to July 2014 and analyzed.
K Charan Kumar +3 more
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IET Radar, Sonar & Navigation, 2021 In ISAR imaging, echo signals of complex manoeuvring targets have to be modelled as multi‐component cubic phase signals (m‐CPS). In this condition, the Doppler diffusion will seriously affect the quality of ISAR imaging.
Fengkai Liu +3 more
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Reconfigurable Hyper-Parallel Fast Fourier Transform Processor Based on Bit-Serial Computing
IEEE Access, 2023 The upcoming 5G communication is committed to providing ultra-high throughput and ultra-low delay service. However, digital signal processing technologies will be a critical challenge with the increasing bandwidth and transmitting streams.
Tingyong Wu, Yuxin Wang, Fuqiang Li
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The Future Fast Fourier Transform? [PDF]
SIAM Journal on Scientific Computing, 1998 The authors propose that an inexact discrete Fourier transform such as an approximate matrix-vector approach based on singular values or a variation of the fast-multipole-based algorithm of \textit{A. Dutt} and \textit{V. Rokhlin} [Appl. Comput. Harmon. Anal. 2, No.
Alan Edelman +2 more
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