Results 61 to 70 of about 24,612 (214)
Parallel time-delay estimation algorithm for GMSK mixing signals
Tongxin xuebao, 2011 Parallel time-delay estimation algorithm was proposed for GMSK mixing signals based on linear approxima-tion approach.Parallel estimation equations were built in flat-fading channel according to autocorrelation of over-sampling based mixing signals and ...
RUI Guo-sheng1, XU Bin2, ZHANG Song2
doaj +2 more sources
Applied Sciences, 2022 Frequency estimation of a sinusoidal signal is a fundamental problem in signal processing for the Internet of Things. The frequency interpolation estimation algorithm based on the fast Fourier transform is susceptible to being disturbed by noise, which ...
Minglong Cheng +4 more
doaj +1 more source
On Limits of Performance of DNA Microarrays [PDF]
, 2006 DNA microarray technology relies on the hybridization process which is stochastic in nature. Probabilistic cross-hybridization of non-specific targets, as well as the shot-noise originating from specific targets binding, are among the many obstacles for ...
Hassibi, A., Hassibi, B., Vikalo, H.
core +1 more source
Frequency estimation precision in Doppler optical coherence tomography using the Cramer-Rao lower bound [PDF]
, 2005 Doppler optical coherence tomography (DOCT) is a technique for simultaneous cross-sectional imaging of tissue structure and blood flow. We derive the fundamental uncertainty limits on frequency estimation precision in DOCT using the Cramer-Rao lower ...
Izatt, Joseph A. +3 more
core +1 more source
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose We aim to inform the design of new diffusion MRI (dMRI) approaches for microvasculature quantification that enhance the biological specificity of imaging towards cancer. Methods We adopted simulation‐informed modelling of the vascular dMRI signal. We synthesised signals from 1500 synthetic vascular networks, for a variety of protocols (
Anna Kira Voronova +11 more
wiley +1 more source
Optimization of Diffusion MRI With Consideration of the Signal Decay in Biological Tissues
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Devising methodology to characterize and optimize acquisition schemes for biological tissues, such as the prostate, that produce model‐based synthetic diffusion‐weighted images and derived model parameters with predictable SNR improvement. Methods The averaging effect (AE) in synthetic diffusion‐weighted images obtained through fitting
Stefan Kuczera, Stephan E. Maier
wiley +1 more source
Pilot-aided carrier synchronization using an approximate DCT-based phase noise model [PDF]
, 2007 This contribution deals with phase noise estimation from pilot symbols. The phase noise process is approximated by an expansion of DCT basis functions containing only a few terms.
Bhatti, Jabran, Moeneclaey, Marc
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Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose This study investigates the effect of VAPOR water suppression and metabolite cycling on metabolite quantification and macromolecules in proton magnetic resonance spectroscopy. Methods Single‐voxel semi‐LASER spectra (TR/TE = 3000/28 ms) and metabolite‐nulled spectra (macromolecules) were acquired in five healthy subjects in the ...
Dinesh K. Deelchand +1 more
wiley +1 more source
MR Spectroscopy Without Water Suppression Using the Gradient Impulse Response Function
Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose Non‐water‐suppressed proton spectroscopy, 1H‐MRS, is desirable, as retaining the strong water resonance can facilitate automated online data corrections, internal concentration referencing, and monitoring of line narrowing effects in functional MRS.
James B. Bacon +2 more
wiley +1 more source
Estimation precision of degree of polarization in the presence of signal-dependent and additive Poisson noises [PDF]
Journal of the European Optical Society-Rapid Publications, 2008 We address precision of estimation of the degree of polarization (DOP) from the orthogonal state contrast image (OSCI) in the presence of both signal-dependent Poisson noise due to useful signal, and additive Poisson noise due to dark current and / or ...
Bénière Arnaud +3 more
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