Results 81 to 90 of about 257,484 (138)

A Parallel Framework with Block Matrices of a Discrete Fourier Transform for Vector-Valued Discrete-Time Signals

The Scientific World Journal, 2015
This paper presents a parallel implementation of a kind of discrete Fourier transform (DFT): the vector-valued DFT. The vector-valued DFT is a novel tool to analyze the spectra of vector-valued discrete-time signals.
Pablo Soto-Quiros
doaj   +1 more source

The generalized discrete fourier transform for the computation of the DFT on large sets of data

, 1977
In this paper we consider a generalized form of the Discrete Fourier Transform (DFT), called Generalized Discrete Fourier Transform (GFT). Two fast algorithms are given that allow us to obtain a one-dimensional GFT by evaluating a proper multidimensional GFT.
Corsini P., Frosini G.
openaire   +2 more sources

On the diagonalization of the discrete Fourier transform [PDF]

arXiv, 2008
The discrete Fourier transform (DFT) is an important operator which acts on the Hilbert space of complex valued functions on the ring Z/NZ. In the case where N=p is an odd prime number, we exhibit a canonical basis of eigenvectors for the DFT. The transition matrix from the standard basis to the canonical basis defines a novel transform which we call ...
arxiv  

Low-Power and Optimized VLSI Implementation of Compact Recursive Discrete Fourier Transform (RDFT) Processor for the Computations of DFT and Inverse Modified Cosine Transform (IMDCT) in a Digital Radio Mondiale (DRM) and DRM+ Receiver [PDF]

, 2013
Shin-Chi Lai, Yueh-Shu Lee, Sheau-Fang Lei   +2 more
openalex   +1 more source

DCT/DST-based frequency modulated-OFDM

ICT Express
Among the recent advancements in waveform design for wireless communication, the frequency-modulated orthogonal frequency-division multiplexing (FM-OFDM) has gained attention due to its resilience to phase noise and Doppler spread, as well as its zero-dB
Gosan Noh, Wooram Shin, Kyeongpyo Kim, Eunkyung Kim   +3 more
doaj  

Estimation of Synchrophasors in Intelligent Electrical Networks: from Models to Design Restrictions

Revista Elektrón, 2017
We first present a detailed review of two popular classes of model based synchrophasor estimators. They are the discrete Fourier transform (DFT) and the Taylor-Fourier transform (TFT) class estimators, which arise from constant or polynomial phasor ...
Francisco Javier Messina, Leonardo Rey Vega, Cecilia Gabriela Galarza   +2 more
doaj  

Spectral phase: from basics to video-rate application to tuning-fork resonance characterization

Publicaciones en Ciencias y Tecnología, 2018
Whereas graduated students are usually familiar with Fourier spectra, the spectral phase remains often mysterious to them. This paper proposes a “hands on.approach of discrete Fourier transform (DFT) and spectral phase. In a first part, basics of DFT are

doaj  

Computational Complexity of Radix-2, Radix-4 and Bluestein Algorithms Implementation of the Discrete Fourier Transform (DFT)

Georgios Giannakopoulos, Khushbu Mehboob Shaikh, Maria Antonnette Perez   +2 more
openalex   +1 more source

Some Propeties Of Discrete Fourier Transform (Dft)

, 1977
Yer no:51 Demirbaş no ...
openaire   +1 more source

Discrete Fourier Transforms: DtFT and DFT

, 2021
In this chapter we investigate a big family of Fourier transforms: continuous Fourier transform (CFT), Fourier series (FS), discrete-time Fourier transform (DtFT), and discrete Fourier transform (DFT). The DFT, in its fast form (FFT), is probably one of the most frequently used orthogonal transforms in the world apart from the discrete cosine transform
Tomasz P. Zieliński
openaire   +3 more sources