Results 261 to 270 of about 5,908,180 (304)

Estimation of phase for noisy linear phase signals

IEEE Transactions on Signal Processing, 1996
It is well-known that a discrete-time symmetric signal has a linear-phase Fourier transform. This paper describes a procedure for estimating the parameters associated with a linear-phase signal from noisy measurements. When the data being modeled is composed of a linear-phase signal corrupted by additive Gaussian noise, the approach taken results in ...
Ramakrishna Kakarala, James A. Cadzow
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A phase-coherence detector/Estimator

ICASSP '79. IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005
A phase-coherence estimator formed via overlapped Fast Fourier Transform (FFT) processing and smoothing is presented. It is more efficiently implemented than the more usual magnitude squared coherence (MSC), requiring half the memory. In applications where the phase is the dominant component of the coherence, it provides a reliable estimate of the ...
Roberto Berezdivin, Robert Perl, Robert Braunstein   +2 more
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Phase estimation Under energy conservation

Quantum Information Processing, 2023
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Sen Han, Xueyuan Hu
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Estimating the phase of synchronized oscillators

Physical Review E, 2008
The state of a collection of phase-locked oscillators is determined by a single phase variable or cyclic coordinate. This paper presents a computational method, Phaser, for estimating the phase of phase-locked oscillators from limited amounts of multivariate data in the presence of noise and measurement errors.
Shai, Revzen, John M, Guckenheimer
openaire   +2 more sources

Phase-based estimation of synchrophasors

2016 IEEE International Workshop on Applied Measurements for Power Systems (AMPS), 2016
One of primary grid management challenge is to ensure that these changing power system operating conditions stay within safe limits at all times including potential and probable future contingencies. In this field, one of the most promising enabling technologies is synchrophasor measurements, which require the estimation of the parameters of sinusoids,
Cuccaro, Pasquale, GALLO, Daniele, LANDI, Carmine, LUISO, Mario, ROMANO, Gianmarco   +4 more
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Phase estimation with few photons

Applied Optics, 1984
A new algorithm is presented for phase tracking faint low-contrast optical fringes using a proper image photon counter. Simulations show that the tenacity of the new algorithm manifestly surpasses what has been conventionally assumed to be the photon statistical limit. Furthermore, the new algorithm is very quick and easy to compute.
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Estimation of counted quantum phase

Physical Review A, 1995
The estimation of phase shift in realistic experiments is addressed here. Provided that the phase concept is not ideal, the phase shift should always be inferred from the performed measurement. Particulary, two different estimations are suggested.
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Estimating synchronization signal phase

SPIE Proceedings, 2015
To read a watermark from printed images requires that the watermarking system read correctly after affine distortions. One way to recover from affine distortions is to add a synchronization signal in the Fourier frequency domain and use this synchronization signal to estimate the applied affine distortion.
Robert G. Lyons, John D. Lord
openaire   +1 more source

Phase estimation by message passing

2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004
The problem of phase estimation in a "turbo receiver" is considered for two different channel models. Several message passing algorithms for phase estimation are derived from the factor graph of the channel models: (1) straight sum-product, applied to a quantized phase model; (2) LMS-type gradient methods; (3) a particle filter.
Justin Dauwels, Hans-Andrea Loeliger
openaire   +1 more source

Delay estimation and the estimation of coherence and phase

IEEE Transactions on Acoustics, Speech, and Signal Processing, 1981
The method of delay estimation given in Hamon and Hannan [1] is reviewed and a modification involving autoregressive model fitting is proposed. It is shown how numerical problems associated with the optimization of the criterion used in both the original and modified procedures can be circumvented.
Hannan, Edward J., Thomson, Peter J.
openaire   +2 more sources