Results 31 to 40 of about 89,376 (355)
Estimation of LFM signal parameters using RD compressed sampling and the DFRFT dictionary
EURASIP Journal on Advances in Signal Processing, 2023 In this paper, a method combining random demodulator (RD) and discrete fractional Fourier transform (DFRFT) dictionary is suggested to directly estimate the parameters of linear frequency modulation (LFM) signals from compressed sampling data. First, the
Shuo Meng, Chen Meng, Cheng Wang
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Sensing Fractional Power Spectrum of Nonstationary Signals with Coprime Filter Banks
Complexity, 2020 The coprime discrete Fourier transform (DFT) filter banks provide an effective scheme of spectral sensing for wide-sense stationary (WSS) signals in case that the sampling rate is far lower than the Nyquist sampling rate.
Xiaomin Li +3 more
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Beilstein Journal of Nanotechnology, 2018 A tunable fractional Fourier transform of the quantum wave function of electrons satisfying either the Schrödinger or the Dirac equation can be implemented in an atomically thin material by a parabolic potential distribution applied on a direction ...
Daniela Dragoman
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Two dimensional discrete fractional Fourier transform [PDF]
Signal Processing, 1998 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Pei, Soo-Chang, Yeh, Min-Hung
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Low-complexity LSMR equalisation of FrFT-based multicarrier systems in doubly dispersive channels [PDF]
, 2011 The discrete fractional Fourier transform (FrFT) has been suggested to enhance performance over DFT-based multicarrier systems when transmitting over doubly-dispersive channels.
Solyman, Ahmed +2 more
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One dimensional fractional frequency Fourier transform by inverse difference operator
Advances in Difference Equations, 2019 This article aims to develop fractional order convolution theory to bring forth innovative methods for generating fractional Fourier transforms by having recourse to solutions for fractional difference equations.
Dumitru Baleanu +3 more
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IET Image Processing, 2023 In this paper, a novel color image encryption scheme based on fractional discrete cosine transform (FrDCT) and discrete wavelet transform (DWT) with interplane arrangements in the discrete orthonormal Stockwell transform (DOST) domain is presented. Color
Gaurav Sundaram +3 more
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, 2014 This paper studies several topics related with the concept of “fractional” that are not directly related with Fractional Calculus, but can help the reader in pursuit new research directions.
Duarte, Fernando +4 more
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Array, 2022 The present paper aims to develop and validate a robust and secure watermarking algorithm. Firstly, the algorithm transforms the cover image and the watermark image separately by FRFT to obtain the amplitudes of both the cover image and watermark image ...
Ming Tang, Fuken Zhou
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Peak to average power ratio reduction in NC–OFDM systems [PDF]
, 2015 Non contiguous orthogonal frequency division multiplexing (NC-OFDM) is an efficient and adaptable multicarrier modulation scheme to be used in cognitive radio communications.
Ghafoor, Abdul +2 more
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