Results 241 to 250 of about 550,631 (287)

Adaptive Universal Linear Filtering

IEEE Transactions on Signal Processing, 2013
We consider the problem of online estimation of an arbitrary real-valued signal corrupted by zero-mean noise using linear estimators. The estimator is required to iteratively predict the underlying signal based on the current and several last noisy observations, and its performance is measured by the mean-square-error.
Dan Garber, Elad Hazan
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Universal Filtering Via Prediction

IEEE Transactions on Information Theory, 2007
We consider the filtering problem, where a finite-alphabet individual sequence is corrupted by a discrete memoryless channel, and the goal is to causally estimate each sequence component based on the past and present noisy observations. We establish a correspondence between the filtering problem and the problem of prediction of individual sequences ...
Tsachy Weissman, Erik Ordentlich, Marcelo J. Weinberger, Anelia Somekh-Baruch, Neri Merhav   +4 more
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A universal notch filter

International Journal of Circuit Theory and Applications, 1979
Recently an active RC configuration for realizing a second-order allpass or a symmetrical notch responses has been given.' The circuit is capable of realizing a high pole Q and has the attractive feature of providing a constant gain factor of unity. In this letter a worthy modification is added to the network' in order to provide any notch response ...
Ahmed M. Soliman, Miss Sanaa A. Badre
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SINH-DOMAIN UNIVERSAL BIQUAD FILTERS

Journal of Circuits, Systems and Computers, 2014
A family of current-mode universal biquad filters, realized using the concept of Sinh-Domain signal processing, is introduced in this paper. Both of them have the capability for operating in a low-voltage environment and, also, for orthogonal electronic adjustment between the resonance frequency and Q factor.
Chrisostomos Kassimis, Costas Psychalinos   +1 more
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Nyquist 1 universal filters

IEEE Transactions on Communications, 2000
The Nyquist (1928) 1 filters (NFls) with both nonlinear phase response and amplitude response of nonspecified symmetry are investigated. It is shown that one of the filter's responses (amplitude or phase) can be chosen almost arbitrary. The second one is then derived from the condition of zero intersymbol interference (ISI) in data transmission ...
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A Universal Image Forensics of Smoothing Filtering

International Journal of Digital Crime and Forensics, 2019
Digital 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, Gao Yu, Yadong Wu, Qiong Zhang, Xiangui Kang   +4 more
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Universal Switching FIR Filtering

IEEE Transactions on Signal Processing, 2012
We revisit recently considered universal finite-impulse-response (FIR) filtering problem and devise a scheme that asymptotically attains the expected mean-square error (MSE) of the best switching FIR filters for every underlying bounded, real-valued signal, provided that the switch rate of the best filters are sufficiently slow. As a performance metric,
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Universal Filtered OFDM with Filter Shift Keying - Invited Paper

2018 IEEE 87th Vehicular Technology Conference (VTC Spring), 2018
Due 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, Ertugrul Basar, Gunes Karabulut-Kurt   +2 more
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Adaptive Modulation and Filter Configuration in Universal Filtered Multi-Carrier Systems

IEEE Transactions on Wireless Communications, 2018
Universal 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, Liang Wu 0001, Zaichen Zhang, Jian Dang, Jiangzhou Wang   +4 more
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