Results 21 to 30 of about 1,684,562 (352)
Unified Constellation Design Using Projection Over QAM: Concept and Examples
IEEE Open Journal of the Communications Society, 2023 Beyond fifth generation (B5G) / sixth generation (6G) wireless systems require full utilization of all spectrums. However, hardware devices operating in the high-frequency bands bring a series of non-ideal behaviors, including nonlinear distortion caused
Xiaorui Yan +6 more
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Virtual damping and Einstein relation in oscillators [PDF]
, 2003 This paper presents a new physical theory of oscillator phase noise. Built around the concept of phase diffusion, this work bridges the fundamental physics of noise and existing oscillator phase-noise theories.
Hajimiri, Ali, Ham, Donhee
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IEEE Open Journal of the Communications Society, 2023 This paper considers a multi-user multiple-input multiple-output (MU-MIMO) system with independent phase noise (PN) at user terminals (UTs) due to non-synchronous noisy local oscillators.
Xiaochen He +5 more
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Joint Effect of Heterogeneous Intrinsic Noise Sources on Instability of MEMS Resonators [PDF]
Electronics, 2015 This article's focus is on the numerical estimation of the overall instability of microelectromechanical-system-based (MEMS) resonators, caused by intrinsic noise mechanisms that are different in nature (electrical, mechanical or chemical). Heterogeneous
Olga Jakšić +6 more
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Design of a Miniaturized Low Noise 10 MHz Crystal Oscillator for Rubidium Atomic Frequency Standard
Chinese Journal of Magnetic Resonance, 2022 A miniaturized low noise quartz crystal oscillator for rubidium atomic frequency standard (RAFS) was designed in this paper, with the oscillation circuit applying Colpitts parallel configuration and SC-cut crystal resonator.
WAN Wen-jie +4 more
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Journal of Low Power Electronics and Applications, 2023 This article presents the design and optimization of a tunable quadrature differential LC CMOS voltage-controlled oscillator (VCO) with a D flip-flop (DFF) frequency divider.
Muhammad Faisal Siddiqui +3 more
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Phase Noise Modeling of Opto-Mechanical Oscillators [PDF]
, 2010 We build upon and derive a precise far from carrier phase noise model for radiation pressure driven opto-mechanical oscillators and show that calculations based on our model accurately match published phase noise data for such oscillators.
Bhave, Sunil A. +3 more
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Quantum-enhanced phase estimation using optical spin squeezing [PDF]
, 2016 Quantum metrology enables estimation of optical phase shifts with precision beyond the shot-noise limit. One way to exceed this limit is to use squeezed states, where the quantum noise of one observable is reduced at the expense of increased quantum ...
Cable, Hugo +4 more
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Digital Tri-Axis Accelerometer with X/Y-Axial Resonators and Z-Axial Capacitive Seesaw
Micromachines, 2022 A tri-axis accelerometer with a digital readout circuit and communication system is introduced. It is composed of two resonant accelerometers in the x and y-axis, and a seesaw capacitive one in the z-axis. The device is encapsulated in air to ensure that
Dunzhu Xia, Mohan Yao, Jinhui Li
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Noise in phase shifting interferometry [PDF]
Optics Express, 2009 We present a theoretical analysis to estimate the amount of phase noise due to noisy interferograms in Phase Shifting Interferometry (PSI). We also analyze the fact that linear filtering transforms corrupting multiplicative noise in Electronic Speckle Pattern Interferometry (ESPI) into fringes corrupted by additive gaussian noise. This fact allow us to
Quiroga Mellado, Juan Antonio +4 more
openaire +3 more sources