Results 71 to 80 of about 2,159,458 (286)
, 2012 A differential evolution (DE) algorithm aided iterative channel estimation and turbo multi-user detection (MUD) scheme is proposed for multi-user multi-input multiple-output aided orthogonal frequency-division multiplexing/spacedivision multiple-access ...
Chen, Sheng +3 more
core +1 more source
Fast Amplitude Estimation for Low-Voltage Ride-Through Operation of Single-Phase Systems
IEEE Access, 2020 Estimating the amplitude of the grid voltage is important for low-voltage ride-through (LVRT) operation in single-phase systems. It requires fast dynamics and is typically achieved through a phase-locked loop (PLL).
Juxiang Zhang +5 more
doaj +1 more source
Real-time estimation of phase and amplitude with application to neural data
Scientific Reports, 2021 Computation of the instantaneous phase and amplitude via the Hilbert Transform is a powerful tool of data analysis. This approach finds many applications in various science and engineering branches but is not proper for causal estimation because it ...
Michael Rosenblum +3 more
doaj +1 more source
FEBS Open Bio, EarlyView.In this study, a novel esterase from the thermoacidophilic archaeon Thermoplasma acidophilum was biochemically and structurally characterized. Our results demonstrate that Ta0887 is a highly thermostable esterase that preferentially hydrolyzes p‐nitrophenyl hexanoate and possesses an α‐helical cap domain that likely contributes to its substrate ...
Alejandro Delgado‐Rey +4 more
wiley +1 more source
Damped CAPES 2D Spectral Estimation for Real-Valued Vibration Signals
Shock and Vibration, 2014 We propose a 2D representation in the frequency-decay factor plane of an arbitrary real-world vibration signal. The signal is expressed as the sum of a decayed-attenuation sine term modulated by an amplitude function and a noise residue.
Danhui Dan, Jiongxin Gong, Yiming Zhao
doaj +1 more source
Rapid estimation of tsunami earthquake magnitudes at local distance
Earth, Planets and Space, 2021 A tsunami earthquake is an earthquake event that generates abnormally high tsunami waves considering the amplitude of the seismic waves. These abnormally high waves relative to the seismic wave amplitude are related to the longer rupture duration of such
Akio Katsumata +2 more
doaj +1 more source
Added Prognostic Value of EEG Reactivity in Comatose Patients Following Cardiac Arrest
Annals of Clinical and Translational Neurology, EarlyView.ABSTRACT Objectives To evaluate the added prognostic value of EEG reactivity for favorable outcome compared with background analysis during and after targeted temperature management (TTM). Methods Prospective observational cohort study of comatose post–cardiac arrest patients admitted to a single academic center between 2017 and 2022, all undergoing ...
Sarah Caroyer +11 more
wiley +1 more source
Iterative Amplitude Equalization for Frequency Estimation (IAE-DFT)
SensorsThe accurate frequency estimation of sinusoidal signals remains a key requirement in precision instrumentation and signal analysis, particularly in applications where noise and spectral leakage affect the measurement accuracy. This paper introduces a new
Elena Serea +2 more
doaj +1 more source
Animal Biotelemetry, 2023 Background Biologgers have contributed greatly to studies of animal movement, behaviours and physiology. Accelerometers, among the various on-board sensors of biologgers, have mainly been used for animal behaviour classification and energy expenditure ...
Hui Yu +4 more
doaj +1 more source
Optimal Estimation of Amplitude and Phase Modulated Signals
mcma, 2001 The present paper deals with an on-line estimation of phases and amptitudes of a non-stationary discrete model \(y_t=C(\theta_t)a_t+Dw_t\), where \(C(\theta_t)=(cos\theta_t(1),\dots ,cos\theta_t(K))\), \(w_t\) i.i.d. \(\sim {N(0,1)}, a_t=(a_t(1), \dots, a_t(K))^T = Aa_{t-}+Bv_t,v_t,w_t\) are mutually independet noises with \(v_t\) i.i.d. \(\sim {N(0,I)}
Andrieu, C, Doucet, A
openaire +2 more sources