Results 21 to 30 of about 2,482,737 (291)

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

Efficiency Comparison of DFT/IDFT Algorithms by Evaluating Diverse Hardware Implementations, Parallelization Prospects and Possible Improvements

Proceedings of the International Conference on Applied Innovations in IT, 2014
In this paper we investigate various algorithms for performing Fast Fourier Transformation (FFT)/Inverse Fast Fourier Transformation (IFFT), and proper techniques for maximizing the FFT/IFFT execution speed, such as pipelining or parallel processing, and
Danijela Efnusheva, Natasha Tagasovska, Aristotel Tentov, Marija Kalendar   +3 more
doaj   +1 more source

Algoritme Fast Fourier Transform (FFT) dan Implementasinya pada Parallel Virtual Machine (PVM)

Teknologi dan Kejuruan, 2009
Algoritme Fast Fourier Transform (FFT) merupakan algoritme yang efisien untuk menghitung Discrete Fourier Transform (DFT), tetapi untuk data yang besar masih diperlukan waktu eksekusi yang cukup besar.
Wahyu Sakti G.I.
doaj   +1 more source

mpi4py-fft: Parallel Fast Fourier Transforms with MPI for Python [PDF]

Journal of Open Source Software, 2019
The fast Fourier transform (FFT) is an algorithm that efficiently computes the discrete Fourier transform. Since the dawn of our digital society, the FFT has permeated to the heart of everyday life applications involving audio, image, and video processing.
Mikael Mortensen, Lisandro Dalcín, David E. Keyes   +2 more
openaire   +4 more sources

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

, 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, Maharatna, Koushik, Grass, Eckhard   +2 more
core   +2 more sources

Design And Implementation Of Radix-4 Fast Fourier Transform In Asia Chip With 0.18 M Standard CMOS Technology [TK5102.9. S624 2008 f rb]. [PDF]

, 2008
Jelmaan Fourier pantas (FFT) merupakan blok yang penting dan digunakan secara meluas dalam algoritma pemprosesan isyarat digital. The Fast Fourier Transform (FFT) is a critical block and widely used in digital signal processing ...
Palaniappan, Siva Kumar
core   +1 more source

Application of parallel version two-dimensional fast Fourier transform algorithm, analog of the Cooley-Tukey algorithm, for digital image processing of satellite data

E3S Web of Conferences, 2019
In modern systems of remote sensing two-dimensional fast Fourier transform (FFT) has been widely used for digital processing of satellite images and subsequent image filtering.
Noskov Mikhail, Tutatchikov Valeriy, Lapchik Mikhail, Ragulina Marina, Yamskikh Tatiana   +4 more
doaj   +1 more source

Comparative Study of AC Signal Analysis Methods for Impedance Spectroscopy Implementation in Embedded Systems

Applied Sciences, 2022
For embedded impedance spectroscopy, a suitable method for analyzing AC signals needs to be carefully chosen to overcome limited processing capability and memory availability. This paper compares various methods, including the fast Fourier transform (FFT)
Ahmed Yahia Kallel, Zheng Hu, Olfa Kanoun   +2 more
doaj   +1 more source