Results 51 to 60 of about 3,716 (175)

Vector Uniform Cramer-Rao Lower Bound

, 2004
Publication in the conference proceedings of EUSIPCO, Viena, Austria ...
openaire   +2 more sources

Cramer-Rao lower bounds for the time delay estimation of UWB signals [PDF]

2004 IEEE International Conference on Communications (IEEE Cat. No.04CH37577), 2004
In this paper, we present the Cramer-Rao lower bounds (CKLBs) for the time delay estimation of UWB signals which could be tight lower bounds for the theoretical performance limits of UWB synchronizers. The CRLBs are investigated for both single pulse systems and time hopping systems in AWGN and multipath channels.
Jian (Andrew) Zhang, Rodney A. Kennedy, Thushara D. Abhayapala   +2 more
openaire   +1 more source

Effect of Water Suppression and Metabolite Cycling on Quantification of 1H MRS Spectra in the Human Brain at 3 Tesla

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 542-547, August 2026.
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, Pierre‐Gilles Henry   +1 more
wiley   +1 more source

MR Spectroscopy Without Water Suppression Using the Gradient Impulse Response Function

Magnetic Resonance in Medicine, Volume 96, Issue 2, Page 530-541, August 2026.
ABSTRACT PurposeNon‐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. Removal of the water suppression module can also mitigate magnetization transfer effects
James B. Bacon, Peter Jezzard, William T. Clarke   +2 more
wiley   +1 more source

EM-Based Channel Estimation Algorithms for OFDM

EURASIP Journal on Advances in Signal Processing, 2004
Estimating a channel that is subject to frequency-selective Rayleigh fading is a challenging problem in an orthogonal frequency division multiplexing (OFDM) system.
Ma Xiaoqiang, Kobayashi Hisashi, Schwartz Stuart C   +2 more
doaj   +1 more source

A Systems Pharmacology Model of Aging Identifies Optimal Combination Therapies With Secondary Benefits on Weight Loss and Metabolic Health

CPT: Pharmacometrics &Systems Pharmacology, Volume 15, Issue 8, August 2026.
ABSTRACT Aging is a systems‐level process linking metabolic dysfunction, inflammation, impaired repair, frailty, and multimorbidity, whereas existing pharmacological strategies usually optimize disease‐specific endpoints such as weight loss or HbA1c rather than aging‐related trajectories. We developed an SBML‐compliant quantitative systems pharmacology
Igor Goryanin, Bob Damms, Irina Goryanin
wiley   +1 more source

Improving polarized neutron reflectometry experiments on soft‐matter samples: optimization of the solid substrate structure

Journal of Applied Crystallography, Volume 59, Issue 4, Page 1192-1199, August 2026.
We demonstrate a Fisher‐information‐based strategy for optimizing the solid substrate structure in polarized neutron reflectometry experiments on soft‐matter samples. The approach identifies magnetic reference layer designs that improve experimentally accessible information and provides a general framework for more efficient reflectometry experiment ...
Ivan P. Yakimenko, Alessandra Luchini, Joshaniel F. K. Cooper, Sebastian Köhler, Tommy Nylander, Sean Langridge, Christy J. Kinane, Andrew J. Caruana, Björgvin Hjörvarsson, Max Wolff, Alexei Vorobiev, Sergiy Valyukh, Fredrik Eriksson, Jens Birch, Kenneth Järrendahl   +14 more
wiley   +1 more source

A non-data-aided SNR estimator based on maximum likelihood method for communication between orbiters

EURASIP Journal on Wireless Communications and Networking, 2020
Signal-to-noise ratio (SNR) is an important metric for performance assessment in numerous scenerios. In order to ensure the reliability and effectiveness of the system performance, plenty of situations require the information of SNR estimate. At the same
Zezhou Sun, Xin Gong, Fan Lu
doaj   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, Volume 13, Issue 7, Page 1452-1466, July 2026.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source

Radiation‐Absorptive Heat Transport in Buoyancy‐Driven MHD Nanofluids Flow With Cross‐Diffusion and Chemical Interaction Effects Over a Vertical Moving Plate

Asia-Pacific Journal of Chemical Engineering, Volume 21, Issue 4, July/August 2026.
ABSTRACT This article investigates the Soret–Dufour cross‐diffusion effects on radiation‐absorptive unsteady free‐convection of magnetized nanofluids ( TiO2–water and Cu–water) flow over a vertical moving permeable plate. The model integrates thermal source, chemical reactions, porous resistance, and thermal radiation. The water‐based nanofluids mixing
B. Prabhakar Reddy, Jumanne Mng'ang'a, P. V. Kanaka Rao   +2 more
wiley   +1 more source