Results 11 to 20 of about 5,332,729 (289)
Efficient phase unwrapping [PDF]
, 2005 In the field of optical interferometry, two-dimensional projections of light interference patterns are often analysed in order to obtain measurements of interest.
AI-Sawaf, Firas
core +7 more sources
Joint Channel and Phase Noise Estimation and Data Detection for GFDM
IEEE Open Journal of the Communications Society, 2021 Generalized frequency division multiplexing (GFDM), an enabler of beyond-5G wireless networks, can be critically impaired due to radio frequency (RF) phase noise.
Amirhossein Mohammadian +1 more
doaj +1 more source
Frequency and phase modulation performance of an injection-locked CW magnetron. [PDF]
, 2006 It is demonstrated that the output of a 2.45-GHz magnetron operated as a current-controlled oscillator through its pushing characteristic can lock to injection signals in times of the order of 100-500 ns depending on injection power, magnetron heater ...
Carter, Richard G. +2 more
core +6 more sources
Discrete Dynamics in Nature and Society, 2022 Noise exists widely in the nervous system, and plays a crucial role in the nervous system information processing. Noise can not only enhance but also weaken the ability of the nervous system to process information.
Kaijun Wu, Huan Zheng, Tao Li
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High Precision Estimation of Laser FM-Noise Using RF Quadrature Demodulation Techniques
IEEE Access, 2022 We report on a technique that uses RF quadrature demodulation to measure laser FM-noise based on a delayed self-heterodyne setup. The measurement is self-referencing and the FM-noise can be measured with high precision over a sufficiently long duration ...
Sean P. O'duill, Liam P. Barry
doaj +1 more source
The effect of AM noise on correlation phase-noise measurements [PDF]
IEEE Transactions on Ultrasonics, Ferroelectrics and Frequency Control, 2007 We analyze the phase-noise measurement methods in which correlation and averaging is used to reject the background noise of the instrument. All the known methods make use of a mixer, used either as a saturated phase detector or as a linear synchronous detector. Unfortunately, AM noise is taken in through the power-to-dc-offset conversion mechanism that
Rubiola, Enrico, Boudot, Rodolphe
openaire +4 more sources
Noise performance of frequency- and phase-locked CW magnetrons operated as current-controlled oscillators. [PDF]
, 2005 Low-power continuous wave ``cooker'' magnetrons driven from industrial-quality switch-mode power supplies have been frequency locked by driving them as current-controlled oscillators in a phase-lock loop (PLL).
Carter, Richard G. +2 more
core +4 more sources
Estimation of Phase Noise in Oscillators with Colored Noise Sources [PDF]
IEEE Communications Letters, 2013 In this letter we study the design of algorithms for estimation of phase noise (PN) with colored noise sources. A soft-input maximum a posteriori PN estimator and a modified soft-input extended Kalman smoother are proposed. The performance of the proposed algorithms are compared against those studied in the literature, in terms of mean square error of ...
Mohammad Reza Khanzadi +2 more
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Phase-Change Materials, 1/f Noise, and Phase Synchrony
Advances in Materials Science and Engineering, 2022 In this article, we study 1/fγ,γ≈1 electrical noise in amorphous phase-change materials. Given the relevance of noise in recent applications, it is necessary to gain a deeper perspective on its nature in phase-change semiconductors, a promising class of ...
J. C. Martinez, R. E. Simpson
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Single-Stage Injection-Locked Frequency Sixtupler in CMOS Process
IEEE Access, 2022 High multiplication-factor even-modulus frequency multipliers are often configured as multi series frequency multipliers. This paper designs a single-stage $LC$ -tank injection locked frequency sixtupler (ILFS) fabricated in $0.18~\mu \text{m}$ CMOS ...
Sheng-Lyang Jang +2 more
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