Results 91 to 100 of about 8,473 (273)
DCT/DST-based frequency modulated-OFDM
ICT ExpressAmong 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 +3 more
doaj +1 more source
Efficient and Secure Outsourcing of DFT, IDFT, and Circular Convolution
IEEE Access, 2019 Discrete Fourier transform (DFT), inverse DFT (IDFT), and circular convolution are important tools for analyzing and designing discrete signals and systems, and are widely used in various industries.
Xiangli Xiao +3 more
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Geometric interpretations of the Discrete Fourier Transform (DFT)
, 1984 One, two, and three dimensional Discrete Fourier Transforms (DFT) and geometric interpretations of their periodicities are presented. These operators are examined for their relationship with the two sided, continuous Fourier transform.
Campbell, C. W.
core
, 2009 Publication in the conference proceedings of EUSIPCO, Glasgow, Scotland ...
Durak, Lütfiye, SERBES, Ahmet
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Discrete Fourier Transform and H∞ Approximation
, 1990 The discrete Fourier transform (DFT) has been used to obtain rational approximations for transfer functions of infinite-dimensional systems. Justification is provided in this note for the use of the DFT in such approximations.
Gu, Guoxiang, Wu, Neng Eva
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Dispersive Fourier Transformation for Versatile Microwave Photonics Applications [PDF]
, 2014 : Dispersive Fourier transformation (DFT) maps the broadband spectrum of an ultrashort optical pulse into a time stretched waveform with its intensity profile mirroring the spectrum using chromatic dispersion.
Wang, Chao, Chao Wang
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Angewandte Chemie International Edition, EarlyView.A linear polymer, poly(2,3‐dihydroxynaphthalene), when insolubilized, leads to self‐assembly into a hydroquinone–quinone donor+acceptor semiconducting architecture through H‐bonding and π‐stacking interactions. The polymer behaves as a heterogeneous photocatalyst in water for H2O2 production via water oxidation and O2 reduction under visible light.
Koki Yoshida +4 more
wiley +1 more source
The discrete fractional Fourier transform
, 1998 Cataloged from PDF version of article.Includes bibliographical references leaves 92-96.In this work, the discrete counterpart of the continuous Fractional Fourier Transform (FrFT) is proposed, discussed and consolidated.
Candan, Çağatay
core
There Is Only One Fourier Transform
, 2017 Four Fourier transforms are usually defined, the Integral Fourier transform, the Discrete-Time Fourier transform (DTFT), the Discrete Fourier transform (DFT) and the Integral Fourier transform for periodic functions.
Jens V. Fischer
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مجلة العلوم الإنسانية والتطبيقية, 2019 One of the common used methods for text recognition (especially with Arabic text), is the usage of character Databases for driving the training and validation (for all the different methods that are used for preprocessing, segmentation and recognition). There are no inclusive and dependable databases for all Arabic letters particularly when considering
Emad Eddin Gamati +2 more
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