Search Results - "DISCRETE Fourier transforms"

Removal of noise from digital image in frequency domain using mat lab.

Authors: Kalpana, Akkineni Vani, Kasireddy Raghava, Pyarasani Vijay et al.

Source: AIP Conference Proceedings. 2025, Vol. 3361 Issue 1, p1-13. 13p.

Subject Terms: *FREQUENCY-domain analysis, *DISCRETE Fourier transforms, *IMAGE processing, *SIGNAL-to-noise ratio, *DIGITAL images, *IMAGE reconstruction algorithms, *IMAGE quality analysis, *COMPUTER vision

Hermitian Kirkwood–Dirac-real operators for discrete Fourier transformations.

Authors: Xu, Jianwei¹ (AUTHOR) xxujianwei@163.com

Source: Journal of Mathematical Physics. Oct2025, Vol. 66 Issue 10, p1-11. 11p.

Subject Terms: *QUANTUM information science, *DISCRETE Fourier transforms, *ORTHONORMAL basis, *QUANTUM states, *MIXTURE distributions (Probability theory)

The rough Hawkes process.

Authors: Hainaut, Donatien Chen, Jing Scalas, Enrico

Source: Communications in Statistics: Theory & Methods. 2025, Vol. 54 Issue 11, p3322-3349. 28p.

Subject Terms: *MARKOV processes, *BITCOIN, *PROBABILITY theory, DISCRETE Fourier transforms, POINT processes

Fast, Algebraic Multivariate Multipoint Evaluation in Small Characteristic and Applications.

Authors: BHARGAVA, VISHWAS GHOSH, SUMANTA KUMAR, MRINAL et al.

Source: Journal of the ACM. Dec2023, Vol. 70 Issue 6, p1-46. 46p.

Subject Terms: *DATA structures, VANDERMONDE matrices, DISCRETE Fourier transforms, TIME complexity, GEOMETRIC series, DETERMINISTIC algorithms, VECTOR spaces, FINITE fields

Optimal jet breakup to generate monodisperse droplets through flow-focusing microfluidics: A novel method employing discrete Fourier transform.

Authors: Farhatfard, Farzad Mousavi, Sepehr Siavashi, Majid

Source: Physics of Fluids. Jul2025, Vol. 37 Issue 7, p1-18. 18p.

Subject Terms: *MICROFLUIDICS, *DISCRETE Fourier transforms, *COMPUTER simulation, *GAS dynamics, *FLUID dynamics, *AUDIO frequency, *MICRODROPLETS

Limited CSI Feedback System for Massive MISO: A Neural Network-Aided SVD Approach

Authors: Javad Ebrahimizadeh Fredrik Rusek Erik Bengtsson et al.

Source: IEEE Transactions on Antennas and Propagation. 73:4891-4902

Subject Terms: Technology, CHANNEL ESTIMATION, Channel estimation, Butler matrices, feedback system, feedforward neural network (FFNN), TDD, Engineering, massive MIMO, 1005 Communications Technologies, Accuracy, Science & Technology, Downlink, Feedforward neural networks, Channel state information (CSI), 4008 Electrical engineering, singular value decomposition, Engineering, Electrical & Electronic, Discrete Fourier transforms, Transmission line matrix methods, MIMO, 0906 Electrical and Electronic Engineering, 4006 Communications engineering, 4009 Electronics, sensors and digital hardware, Telecommunications, MISO, FDD, Massive MIMO, Networking & Telecommunications, Estimation

A Tutorial on THz Pulse Analysis: Accurate Retrieval of Pulse Arrival Times, Spectral Energy Density and Absolute Spectral Phase.

Authors: Lloyd-Hughes, James Chopra, Nishtha Deveikis, Justas et al.

Source: Journal of Infrared, Millimeter & Terahertz Waves. Jun2025, Vol. 46 Issue 6, p1-24. 24p.

Subject Terms: *DISCRETE Fourier transforms, *FAST Fourier transforms, *FREQUENCY-domain analysis, *PHYSICAL sciences, *SPECTRAL energy distribution, *SUBMILLIMETER waves

Physics-informed neural network for predicting multi-row film cooling superposition using Fourier transform and attention mechanism.

Authors: Yan, Hao-nan Ye, Lin Zhou, Tian-Liang et al.

Source: Physics of Fluids. Jun2025, Vol. 37 Issue 6, p1-17. 17p.

Subject Terms: *DISCRETE Fourier transforms, *FOURIER transforms, *COOLING systems, *SYSTEMS design, *AERODYNAMICS

Photometric analysis of the two δScuti stars 1SWASP J014624.11 + 491311.7 and ASAS 070257 + 1009.1.

Authors: Abdel-Sabour, Mohamed Nouh, Mohamed I. Elkholy, Essam et al.

Source: Advances in Space Research. May2025, Vol. 75 Issue 10, p7739-7750. 12p.

Subject Terms: *DISCRETE Fourier transforms, *STARS, *HR diagrams, *LIGHT curves, *ASTRONOMICAL observatories

SUPERFAST DIRECT INVERSION OF THE NONUNIFORM DISCRETE FOURIER TRANSFORM VIA HIERARCHICALLY SEMISEPARABLE LEAST SQUARES.

Authors: WILBER, HEATHER EPPERLY, ETHAN N. BARNETT, ALEX H.

Source: SIAM Journal on Scientific Computing. 2025, Vol. 47 Issue 3, pA1702-A1732. 31p.

Subject Terms: *DISCRETE Fourier transforms, *LINEAR systems, *LOW-rank matrices, *MATRICES (Mathematics), *LEAST squares, *MATRIX inversion, *COMPUTATIONAL complexity

Improving time series forecasting in frequency domain using a multi resolution dual branch mixer with noise insensitive ArcTanLoss.

Authors: Zhang, Yahao Zhou, Xiaofeng Zhang, Yichi et al.

Source: Scientific Reports. 4/16/2025, Vol. 15 Issue 1, p1-18. 18p.

Subject Terms: *DISCRETE Fourier transforms, *FREQUENCY spectra, *FORECASTING, *NOISE

An Improved Kernelized Correlation Filter for Extracting Traffic Flow in Satellite Videos.

Authors: Guo, Dudu Shuai, Hongbo Zhang, Jie et al.

Source: Journal of Advanced Transportation. 4/13/2025, Vol. 2025, p1-16. 16p.

Subject Terms: *DISCRETE Fourier transforms, *TRAFFIC flow, *ARTIFICIAL satellites, *KALMAN filtering, *TRACKING algorithms, *VIDEOS

Discrete Pseudo-differential Operators and Applications to Numerical Schemes.

Authors: Faou, Erwan Grébert, Benoît

Source: Foundations of Computational Mathematics. Apr2025, Vol. 25 Issue 2, p587-630. 44p.

Subject Terms: *DISCRETE Fourier transforms, *FINITE difference method, *FAST Fourier transforms, *FINITE differences, *CALCULUS

Analytical Representation of Complexity Diagrams.

Authors: Babikov, V. G. Galyaev, A. A.

Source: Problems of Information Transmission. Apr2025, Vol. 61 Issue 1, p27-40. 14p.

Subject Terms: *DISCRETE Fourier transforms, *ENTROPY (Information theory), *SIGNAL-to-noise ratio, *PROBLEM solving

An improved technique based on discrete Fourier transform for demodulating the plasma-induced phase shift in a dispersion interferometer.

Authors: Khilchenko, A. D. Kvashnin, A. N. Soldatkina, E. I. et al.

Source: Review of Scientific Instruments. Apr2025, Vol. 96 Issue 4, p1-11. 11p.

Subject Terms: *DISCRETE Fourier transforms, *DIFFERENTIAL forms, *INTERFEROMETERS, *PHOTODETECTORS, *DISPERSION (Chemistry)

Analysis of fast fourier transform using VEDIC and booth multiplication.

Authors: Hassan, Hasliza Mohd Akhball, Shahrul Izwan Kambas, Mohd Fadli

Source: AIP Conference Proceedings. 2025, Vol. 3056 Issue 1, p1-8. 8p.

Subject Terms: *DISCRETE Fourier transforms, *FOURIER analysis, *DIGITAL technology, *SIGNAL processing, *TELECOMMUNICATION systems, *FAST Fourier transforms

Epilepsy Diagnosis Using Directed Acyclic Graph SVM Technique in EEG Signals.

Authors: Babu, Shyam Wadhwani, Arun Kumar

Source: Traitement du Signal. Dec2024, Vol. 41 Issue 6, p3163-3172. 10p.

Subject Terms: DISCRETE Fourier transforms, DISCRETE wavelet transforms, DIRECTED acyclic graphs, DIAGNOSIS of epilepsy, EARLY diagnosis, ELECTROENCEPHALOGRAPHY

One-shot messaging at any load through random sub-channeling in OFDM

Authors: Wunder, Gerhard Flinth, Axel Gross, Benedikt

Source: IEEE Transactions on Information Theory. 69(10):6719-6738

Subject Terms: Discrete Fourier transforms, Fats, Indexes, Mathematical models, OFDM, Reliability, Symbols, Compressed sensing, measure concentration, wireless communication

File Description: electronic

Access URL: https://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-211823
https://umu.diva-portal.org/smash/get/diva2:1781851/FULLTEXT01.pdf

Smooth Tensor Qatar Riyal Decomposition for Dynamic MRI Reconstruction

Authors: Tingting Xu Yongyong Chen Haijin Zeng et al.

Source: IEEE JOURNAL OF BIOMEDICAL AND HEALTH INFORMATICS

Subject Terms: tensor Qatar Riyal decomposition, Technology and Engineering, LOW-RANK, T)-SPACE, Tensors, Transforms, Discrete Fourier transforms, Dynamic MRI reconstruction, Imaging, tensor total variation, Matrix decomposition, Magnetic resonance imaging, IMAGE-RECONSTRUCTION, PRIORS, Image reconstruction, SPARSE, SEPARATION, ALGORITHM, UNDERSAMPLED (K

File Description: application/pdf

Access URL: https://pubmed.ncbi.nlm.nih.gov/37040241
http://hdl.handle.net/1854/LU-01GY75SDZ3HFTBCC3YWC7BFD6H
https://biblio.ugent.be/publication/01GY75SDZ3HFTBCC3YWC7BFD6H
https://biblio.ugent.be/publication/01GY75SDZ3HFTBCC3YWC7BFD6H/file/01GY75XMV524CJWSGZ7PPKX1X9
http://doi.org/10.1109/jbhi.2023.3266349

Artificial Intelligence in Metamaterial Informatics for Sonic Frequency Mechanical Identification Tags.

Authors: Saatchi, Daniel Lee, Myung‐Joon Pandit, Tushar Prashant et al.

Source: Advanced Functional Materials. 3/4/2025, Vol. 35 Issue 10, p1-16. 16p.

Subject Terms: *MACHINE learning, *DISCRETE Fourier transforms, *ARTIFICIAL intelligence, *INTEGRATED circuits, *SHIPWRECKS