Results 251 to 260 of about 1,748,774 (291)
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A Universal Image Forensics of Smoothing Filtering
International Journal of Digital Crime and Forensics, 2019Digital image smoothing filtering operations, including the average filtering, Gaussian filtering and median filtering are always used to beautify the forged images. The detection of these smoothing operations is important in the image forensics field. In this article, the authors propose a universal detection algorithm which can simultaneously detect ...
Anjie Peng +4 more
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Universal Filtered OFDM with Filter Shift Keying - Invited Paper
2018 IEEE 87th Vehicular Technology Conference (VTC Spring), 2018Due to its several implementation advantages, orthogonal frequency division multiplexing (OFDM) has become the most frequently used waveform in modern wireless communication technologies. However, OFDM has some vulnerabilities that may limit its advantages.
Selahattin Gökceli +2 more
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Universal filter using a ‘pseudo’ gyrator
International Journal of Electronics, 2008A filter based on a ‘pseudo’ gyrator that simultaneously makes a low-pass, band-pass and notch transfer function is presented. By adding another amplifier, this circuit can also make a high-pass and an all-pass filter. Two prototypes using usual op. amp. or current feed-back operational amplifiers (CFOAs) are proposed.
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Adaptive Modulation and Filter Configuration in Universal Filtered Multi-Carrier Systems
IEEE Transactions on Wireless Communications, 2018Universal filtered multi-carrier (UFMC) is a potential waveform technology, which can efficiently combat different carrier frequency offsets (CFOs) of multiple users. First, adaptive modulation and power allocation are applied for each subcarrier to meet a preset bit error rate (BER) requirement by ignoring CFOs. Then, we prove that different CFOs will
Xiao Chen 0005 +4 more
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An Universal Active Power Filter Controller System
2009 IEEE Industry Applications Society Annual Meeting, 2009An universal active power filter controller system is proposed that adapts itself to both harmonic current source type loads as well as harmonic voltage source type loads is presented in this paper. The system level harmonic filtering application issues of a multiple and clustered harmonic producing load site, such as at an industrial load site or at a
Subhashish Bhattacharya +2 more
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Universal transadmittance filter using CMOS MOCDTA
2014 Eleventh International Conference on Wireless and Optical Communications Networks (WOCN), 2014This paper presents a new realization of transadmittance mode universal filter having three inputs and single output. The circuit employs two current differencing transconductance amplifier (CDTA), two capacitors and two resistors. One of the CDTA has multiple outputs hence, called MOCDTA.
Pushpanjali Singh +3 more
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Current-mode Active-only Universal Filter
APCCAS 2006 - 2006 IEEE Asia Pacific Conference on Circuits and Systems, 2006A universal current-mode active-only filter using the biquadratic transfer function is proposed. The proposed circuit is realized by minimized active-only components count without external passive elements. The different kinds of filter function as lowpass, highpass, bandpass and band-reject response can be obtained without changing circuit topology ...
Pipat Prommee +2 more
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Design of current conveyors and their applications in universal filters
2011 8th International Conference on Electrical Engineering, Computing Science and Automatic Control, 2011This paper shows the evolution of voltage followers (VFs) to design positive- and negative-type first (CCI), second (CCII) and third (CCIII) generation current conveyors (CCs), through the addition of current mirrors (CMs). Particularly, three dual-output CCIIs (DOCCIIs) are designed to be electronically tuned by modifying their current bias, thus ...
Esteban Tlelo-Cuautle +3 more
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Current conveyor based universal biquad filter
ICECS 2001. 8th IEEE International Conference on Electronics, Circuits and Systems (Cat. No.01EX483), 2002A current-mode biquad filter using as active elements unity gain current conveyors is presented. The proposed circuit has one input and three outputs and can simultaneously realize lowpass, band-pass and high-pass responses. The structure, which has all the passive elements grounded and only two capacitors, presents low sensitivities and independent ...
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