Results 31 to 40 of about 5,332,729 (289)

Parametric study of EEG sensitivity to phase noise during face processing [PDF]

open access: yes, 2008
<b>Background: </b> The present paper examines the visual processing speed of complex objects, here faces, by mapping the relationship between object physical properties and single-trial brain responses.
Pernet, C.R.   +11 more
core   +1 more source

The Effect of Phase Noise in OCDM

open access: yesGLOBECOM 2023 - 2023 IEEE Global Communications Conference, 2023
With the rollout of 5G wireless networks and its disruption of various markets, researchers have already started to envision 6G communication. The next-generation communication is expected to provide very high data rate with high reliability, even at severe time and frequency selective wireless channels.
Abdur Rahman Mohamed Ismail   +3 more
openaire   +3 more sources

Unified Constellation Design Using Projection Over QAM: Concept and Examples

open access: yesIEEE 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
doaj   +1 more source

Polarization Mode Noise in Ultra-Low Drift Phase Reference Distribution System over Fiber Network [PDF]

open access: yes, 2005
The impact of polarization mode noise on the temporal drift of a delivered analogue phase reference signal through an optical fiber network is studied.
Shillue, William P.   +4 more
core   +1 more source

Auxiliary Variable-Aided Hybrid Message Passing for Joint Channel, Phase Noise Estimation and Detection for Multi-User MIMO Systems

open access: yesIEEE 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
doaj   +1 more source

Joint Effect of Heterogeneous Intrinsic Noise Sources on Instability of MEMS Resonators [PDF]

open access: yesElectronics, 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
doaj   +1 more source

Design of a Miniaturized Low Noise 10 MHz Crystal Oscillator for Rubidium Atomic Frequency Standard

open access: yesChinese 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
doaj   +1 more source

PHASE AND FREQUENCY NOISE METROLOGY [PDF]

open access: yesFrequency Standards and Metrology, 2009
As a consequence of a general trend in the physics of oscillators and clocks towards optics, phase and frequency metrology is rapidly moving to optics too. Yet, optics is not replacing the traditional radio-frequency (RF) and microwave domains. Instead, it adds tough challenges.
Rubiola, Enrico   +3 more
openaire   +2 more sources

Phase Noise Effects on Phase-Modulated Coherent Optical OFDM

open access: yesIEEE Photonics Journal, 2016
One of the primary drawbacks of orthogonal frequency-division multiplexing (OFDM) is the large peak-to-average ratio (PAPR). It continues to contribute nonlinear degradations after it was introduced into optical fiber transmissions.
Xingwen Yi   +6 more
doaj   +1 more source

Design and Optimization of an Ultra-Low-Power Cross-Coupled LC VCO with a DFF Frequency Divider for 2.4 GHz RF Receivers Using 65 nm CMOS Technology

open access: yesJournal 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
doaj   +1 more source

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