Results 111 to 120 of about 54,708 (232)

Performance evaluation of a mobile satellite system modem using an ALE method [PDF]

Experimental performance of a newly designed demodulation concept is presented. This concept applies an Adaptive Line Enhancer (ALE) to a carrier recovery circuit, which makes pull-in time significantly shorter in noisy and large carrier offset ...
Iwasaki, Motoya, Ohsawa, Tomoki
core   +1 more source

Electromagnetic Noise Characterization and Suppression in Low‐Field MRI Systems

Magnetic Resonance in Medicine, Volume 95, Issue 5, Page 3000-3007, May 2026.
ABSTRACT Purpose Our goal is to develop and validate a practical protocol that guides users in identifying and suppressing electromagnetic noise in low‐field MRI systems, enabling operation near the thermal noise limit. Methods We present a systematic, stepwise methodology that includes diagnostic measurements, hardware isolation strategies, and good ...
Teresa Guallart‐Naval, José Miguel Algarín, Joseba Alonso   +2 more
wiley   +1 more source

Motion‐ and Field‐Robust Mesoscopic Whole‐Brain T2*$$ {T}_2^{\ast } $$‐Weighted Imaging at 7 and 11.7 T Using Servo Navigation

Magnetic Resonance in Medicine, Volume 95, Issue 5, Page 2658-2670, May 2026.
ABSTRACT Purpose To mitigate artifacts related to motion and field changes in high‐resolution T2*$$ {T}_2^{\ast } $$‐weighted human brain imaging using servo navigation at ultra‐high fields up to 11.7 T. Methods MR‐based servo navigators were integrated into a segmented 3D‐EPI sequence to allow for prospective correction of involuntary head motion and ...
Matthias Serger, Rüdiger Stirnberg, Philipp Ehses, Malte Riedel, Thomas Ulrich, Caroline Le Ster, Franck Mauconduit, Vincent Gras, Alexis Amadon, Alexandre Vignaud, Son Chu, Shajan Gunamony, Maxim Zaitsev, Nicolas Boulant, Klaas P. Pruessmann, Tony Stoecker   +15 more
wiley   +1 more source

Comparative analysis of modulation and demodulation methods of the control signals of rail line

Nauka ta progres transportu, 2012
Introduction: One of the ways of increasing the noise stability rail circuit is the use more informative waveform of control signal. Use in rail circuit modulated signals gives several informative selective traits in relatively narrow spectrum. The study
K.V.Goncharov
doaj  

Quantum Theory of Distributed‐Feedback Parametric Amplifiers and Oscillators

Advanced Quantum Technologies, Volume 9, Issue 5, May 2026.
A new class of quantum light source is emerging from optical parametric cavities formed by Bragg reflectors, a so‐called distributed‐feedback design. Such devices are especially promising for quantum technologies such as sensing. Here, an analytic quantum model of these sources reveals their key properties, such as the parametric oscillation threshold,
Alex O.C. Davis, Alex I. Flint
wiley   +1 more source

ZEROES: Robust Derivative-Based Demodulation Method for Optical Camera Communication

Photonics
Most of Optical Camera Communication (OCC) systems benefit from the rolling shutter mechanism of Complementary Metal-Oxide Semiconductor (CMOS) cameras to record the brightness evolution of the Light-Emitting Diode (LED) through dark and bright strips ...
Maugan De Murcia, Hervé Boeglen, Anne Julien-Vergonjanne   +2 more
doaj   +1 more source

Targeting Faulty Bearings for an Ocean Turbine Dynamometer [PDF]

International Journal of Prognostics and Health Management, 2013
A real-time, vibrations-based condition monitoring method used to detect, localize, and identify a faulty bearing in an ocean turbine electric motor is presented in this paper.
David J. Vendittis, Pierre-Philippe Beaujean, Nicholas Waters   +2 more
doaj  

The synchronization of the orthogonal frequency division multiplexing system

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
The results presented research OFDM system synchronization by using one of the basic properties of the continuous Fourier transform, characterized by the duality between a convolution in the time domain, and multiplying the frequency domain, which is not
R. A. Zhernosekov, V. T. Pershin
doaj  

Development and Study of Demodulation Techniques for Frequency Manipulated Signals

Известия высших учебных заведений России: Радиоэлектроника, 2017
The goal of our research is development and study of different demodulation techniques for a frequency shift keyed signals. The signal under study is a frequency-shift keyed (FSK) signal when the information signal regulates the carrier frequency.
D. I. Kaplun, V. V. Gulvanskiy, I. I. Kanatov, D. M. Klionskiy, V. F. Lapizkiy, V. I. Bobrovskiy, K. V. Frolov, A. K. Skvortzov   +7 more
doaj  

Radial Basis Neural Network Construction and Training for Telegraph-Code Structure Reception

Известия высших учебных заведений России: Радиоэлектроника, 2017
The use of neural network classification algorithms for solving the problem of receiving telegram-code structures is considered. The article provides comparison of the neural network classifiers analyzing the normalized input signal as well as the signal
D. A. Chistoprudov, V. A. Kozlov, M. R. Bibarsov, D. A. Potyagov, N. Ya. Karasik   +4 more
doaj