Results 21 to 30 of about 552,279 (292)

Fast and accurate estimation of multifrequency signals with noise and harmonics in control of photovoltaic systems

open access: yesThe Journal of Engineering, 2019
Photovoltaic systems are the important part of the energy market in many countries around the world. Such systems contain several parts and one of them is the inverter to produce the AC signal.
Dariusz Kania, Jozef Borkowski
doaj   +1 more source

A highly accurate DFT-based parameter estimator for complex exponentials

open access: yesJournal of Telecommunications and Information Technology, 2006
A highly accurate DFT-based complex exponential parameter estimation algorithm is presented in this paper. It will be shown that for large number of samples and high signal to noise ratio (SNR), the phase estimation error variance performance is only 0 ...
Jeffrey Tsui, Sam Reisenfeld
doaj   +1 more source

Impact of Imperfect Parameter Estimation on the Performance of Multi-User ARGOS Receivers [PDF]

open access: yes, 2010
In this paper, we analyze the performance of Successive Interference Cancelation (SIC) receivers in the context of the ARGOS satellite system. Multi-user SIC receivers are studied in presence of imperfect estimates of signal parameters.
Boucheret, Marie-Laure   +4 more
core   +1 more source

On the Validity of the Noise Model of Quantization for the Frequency-Domain Amplitude Estimation of Low-Level Sine Waves

open access: yesMetrology and Measurement Systems, 2015
This paper deals with the amplitude estimation in the frequency domain of low-level sine waves, i.e. sine waves spanning a small number of quantization steps of an analog-to-digital converter.
Bellan Diego
doaj   +1 more source

Research on Maximum Likelihood b Value and Confidence Limits Estimation in Doubly Truncated Apparent Frequency–Amplitude Distribution in Rock Acoustic Emission Tests

open access: yesMathematics, 2022
The b value deduced from the Gutenberg–Richter law is an important parameter for sequence and precursory analyses, both in laboratory acoustic emission tests and seismology.
Changgen Xia   +4 more
doaj   +1 more source

Constrained Phase Noise Estimation in OFDM Using Scattered Pilots Without Decision Feedback [PDF]

open access: yes, 2016
In this paper, we consider an OFDM radio link corrupted by oscillator phase noise in the receiver, namely the problem of estimating and compensating for the impairment.
Mathecken, Pramod   +3 more
core   +2 more sources

Outlier-Robust Truncated Maximum Likelihood Parameter Estimation of Compound-Gaussian Clutter with Inverse Gaussian Texture

open access: yesRemote Sensing, 2022
Compound-Gaussian distributions with inverse Gaussian textures, referred to as the IGCG distributions, are often used to model moderate/high-resolution sea clutter in amplitude.
Chao Tian, Peng-Lang Shui
doaj   +1 more source

Feedback reliability calculation for an iterative block decision feedback equalier [PDF]

open access: yes, 2009
A new class of iterative block decision feedback equalizer (IB-DFE) was pioneered by Chan and Benvenuto. Unlike the conventional DFE, the IB-DFE is optimized according to the reliability of the feedback (FB) symbols.
Armour, SMD, Huang, G, Nix, AR
core   +2 more sources

Randomized gap and amplitude estimation [PDF]

open access: yesPhysical Review A, 2016
We provide a method for estimating spectral gaps in low-dimensional systems. Unlike traditional phase estimation, our approach does not require ancillary qubits nor does it require well characterised gates. Instead, it only requires the ability to perform approximate Haar-random unitary operations, applying the unitary whose eigenspectrum is sought out
Zintchenko, Ilia, Wiebe, Nathan
openaire   +2 more sources

A review of demodulation techniques for amplitude-modulation atomic force microscopy

open access: yesBeilstein Journal of Nanotechnology, 2017
In this review paper, traditional and novel demodulation methods applicable to amplitude-modulation atomic force microscopy are implemented on a widely used digital processing system.
Michael G. Ruppert   +4 more
doaj   +1 more source

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