Results 21 to 30 of about 2,662 (145)
Implementation of Goertzel-based frequency estimation for power quality monitoring in embedded measurement systems [PDF]
Metrology and Measurement Systems, 2022 International standards from IEC and IEEE regulate power grid parameters such as theRMSvalue, frequency, harmonic and interharmonic distortion, unbalance or the presence of transients, that are important to assure the quality of distributed power ...
Nuno M. Rodrigues +2 more
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Waveform Design and DoA-DoD Estimation of OFDM-LFM Signal Based on SDFnT for MIMO Radar
IEEE Access, 2023 In comparison to orthogonal frequency division multiplexing (OFDM), the OFDM linear frequency modulation (OFDM-LFM) signal has similar time-bandwidth product, lower peak-to-average power ratio, and higher sensitivity to Doppler frequency shift, making it
Jingqi Wang +3 more
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Journal of Computer Networks and Communications, 2016 We present the exact symbol error rate (SER) expression for quadrature phase shift keying (QPSK) modulation in frequency selective Rayleigh fading channel for discrete fractional Fourier transform- (DFrFT-) based orthogonal frequency division ...
Atul Kumar +3 more
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Engineering Science and Technology, an International Journal, 2021 The paper proposes an unplanned island detection method in a microgrid with micro phasor measurement unit (μPMU). The μPMU extracts certain features, by using multi domain nature of discrete fractional Fourier transform, from measured voltage data and ...
Soham Dutta +2 more
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Continuous vs. discrete fractional Fourier transforms
Journal of Computational and Applied Mathematics, 1999 The authors consider discrete finite versions of the fractional integral Fourier transform, namely a fractionalization of the discrete Fourier transform (DFT) and the fractional Fourier-Kravchuk transform [cf. \textit{N. M. Atakishiyev} and \textit{K. B. Wolf}, Fractional Fourier-Kravchuk transform, J. Opt. Soc. Am. A 14, 1467-1477 (1997)].
Atakishiyev, Natig M. +2 more
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Two-Dimensional Discrete Coupled Fractional Fourier Transform (DCFrFT)
Fractal and FractionalThe fractional Fourier transform is critical in signal processing and supports many applications. Signal processing is one notable application. Implementing the fractional Fourier transform requires discrete versions.
Asma Elshamy +2 more
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Image encryption using fractional integral transforms: Vulnerabilities, threats, and future scope
Frontiers in Applied Mathematics and Statistics, 2022 With the enormous usage of digital media in almost every sphere from education to entertainment, the security of sensitive information has been a concern.
Gurpreet Kaur +2 more
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Computer Assisted Methods in Engineering and Science, 2023 In order to solve the security problems associated with medical information and improve the robustness of watermarking algorithms for medical images, a unique approach to watermarking based on block operations is presented.
Anusha Chacko, Shanty Chacko
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Design of fractional order differentiator using type-III and type-IV discrete cosine transform
Engineering Science and Technology, an International Journal, 2017 In this paper, an interpolation method based on discrete cosine transform (DCT) is employed for digital finite impulse response-fractional order differentiator (FIR-FOD) design. Here, a fractional order digital differentiator is modeled as finite impulse
Manjeet Kumar, Tarun Kumar Rawat
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Entropy, 2020 The security of information is necessary for the success of any system. So, there is a need to have a robust mechanism to ensure the verification of any person before allowing him to access the stored data.
Abeer D. Algarni +5 more
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