Results 1 to 10 of about 29,490 (266)

SMUL-FFT: A Streaming Multiplierless Fast Fourier Transform [PDF]

IEEE Transactions on Circuits and Systems II: Express Briefs, 2021
IEEE Transactions on Circuits and Systems II. Express Briefs, 68 (5)
Christoph Studer, Seyed Hadi Mirfarshbafan, Sueda Taner   +2 more
exaly   +3 more sources

Arbitrary Sampling Fourier Transform and Its Applications in Magnetic Field Forward Modeling

Applied Sciences, 2022
Numerical simulation and inversion imaging are essential in geophysics exploration. Fourier transform plays a vital role in geophysical numerical simulation and inversion imaging, especially in solving partial differential equations.
Shikun Dai, Ying Zhang, Kun Li, Qingrui Chen, Jiaxuan Ling   +4 more
doaj   +1 more source

Implementing EW Receivers Based on Large Point Reconfigured FFT on FPGA Platforms [PDF]

International Journal of Computational Intelligence Systems, 2011
This paper presents design and implementation of digital receiver based on large point fast Fourier transform (FFT) suitable for electronic warfare (EW) applications.
He Chen, Xiujie Qu, Yuedong Luo, Chenwei Deng   +3 more
doaj   +1 more source

Development of Deep Convolutional Neural Network with Adaptive Batch Normalization Algorithm for Bearing Fault Diagnosis

Shock and Vibration, 2020
It is crucial to carry out the fault diagnosis of rotating machinery by extracting the features that contain fault information. Many previous works using a deep convolutional neural network (CNN) have achieved excellent performance in finding fault ...
Chao Fu, Qing Lv, Hsiung-Cheng Lin
doaj   +1 more source

Performance Analysis of Framelet Based OFDM System Under Different Channel Conditions [PDF]

Engineering and Technology Journal, 2012
In this paper, the Framelet Transform (FT) is proposed as a new modulation technique in the realization of Orthogonal Frequency Division Multiplexing (OFDM).
Atheer A. Sabri, Ziad Q. Abdulkareem
doaj   +1 more source

SPECTRAL ESTIMATION OF TIME SERIES

Современная наука и инновации, 2022
As a result of spectral analysis, namely, the fast Fourier transform (FFT) method, the wavelet transform method, the Hilbert-Huang transform method, certain periods of the time series representing the monthly average values of the sunspot numbers were ...
L. N. Dzhimbeeva, G. A. Mankaeva, Z. I. Tsebikova, C. S. Akmyradova, A. Bayramgylydzhova, A. Y. Yazlyeva   +5 more
doaj   +1 more source

PAPR reduction of OFDM systems using H-SLM method with a multiplierless IFFT/FFT technique

ETRI Journal, 2022
This study proposes a novel low-complexity algorithm for computing inverse fast Fourier transform (IFFT)/fast Fourier transform (FFT) operations in binary phase shift keying-modulated orthogonal frequency division multiplexing (OFDM) communication ...
Namitha A. Sivadas
doaj   +1 more source

Reconfigurable VLSI design of a changeable hybrid-radix FFT hardware architecture with 2D-FIFO storing structure for 3GPP LTE systems

ICT Express, 2018
This paper presents a reconfigurable Fast Fourier Transform (FFT) hardware architecture for 3GPP LTE systems. In the main FFT computing process, a novel processing kernel engine is proposed to support four configuration types of changeable hybrid-radix ...
Xin-Yu Shih, Hong-Ru Chou
doaj   +1 more source

Accurate Frequency Estimator of Sinusoid Based on Interpolation of FFT and DTFT

IEEE Access, 2020
An accurate frequency estimator of complex sinusoid in additive white noise is proposed. It is based on interpolation of Fast Fourier Transform (FFT) and Discrete-Time Fourier Transform (DTFT).
Lei Fan, Guoqing Qi, Jun Xing, Jiyu Jin, Jinyu Liu, Zhisen Wang   +5 more
doaj   +1 more source

Experimental Research on Adaptive 128/64QAM DFT-Spread IFFT/FFT Size Efficient OFDM With a High SE in VLLC System

IEEE Photonics Journal, 2017
In this paper, an adaptive inverse fast Fourier transform and fast Fourier transform (IFFT/FFT) size efficient orthogonal frequency division multiplexing (OFDM) modulation scheme with 128/64-quadrature amplitude modulation (QAM) and ...
Qinghui Chen, Jing He, Rui Deng, Ming Chen, Fangliu Zhang, Min Dai, Fengting Long, Lin Chen   +7 more
doaj   +1 more source