Results 211 to 220 of about 378,338 (267)

Noise-induced phase synchronization enhanced by dichotomic noise

Physical Review E, 2001
We study the nonlinear response of a stochastic bistable system driven by both a weak periodic signal and a dichotomic noise in terms of stochastic phase synchronization. We show that the effect of noise-induced phase synchronization can be significantly enhanced by the addition of a dichotomic noise.
R, Rozenfeld, J A, Freund, A, Neiman, L, Schimansky-Geier   +3 more
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Phase Noise Metrology

2007
As a result of a major technological trend towards high speed digital communications and circuits, phase noise turns out to be a relevant concern for scientists and engineers. This paper describes methods and instruments to measure the phase noise of oscillators, components and more complex devices in the radiofrequency and microwave bands, from ...
Rubiola, Enrico, Giordano, Vincent
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Noise-Induced Nonequilibrium Phase Transition

Physical Review Letters, 1994
We report on a simple model of a spatially distributed system which, subject to multiplicative noise, white in space and time, can undergo a nonequilibrium phase transition to a symmetry-breaking state, while no such transition exists in the absence of the noise term.
, Van den Broeck C, , Parrondo, , Toral
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Phase noise metrology

SPIE Proceedings, 2003
This paper describes the fundamental concepts that characterize the phase modulation (PM) noise and amplitude modulation (AM) noise of electronic devices in the frequency-domain, and their relationship to tradition time-domain measures of frequency stability. The statistical confidence of the data is discussed.
openaire   +1 more source

Phase noise estimation based on direct detection using phase noise to intensity noise conversion

2013 12th International Conference on Optical Communications and Networks (ICOCN), 2013
We proposed a method to estimate the laser phase noise using the phase noise to intensity noise conversion based on the direct detection (DD) technique. It is shown by simulation that the estimated results approach when the laser line-width is no larger than 1MHz. Besides, compared with coherent detection -based phase noise estimation, the DD technique
Yuan Bao, Hongwen Lin, Yuru Li, Jianping Li, Zanhong Wu, Zhaohui Li   +5 more
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Respiratory noise correction using phase information

Magnetic Resonance Imaging, 2008
Respiratory noise is a confounding factor in functional magnetic resonance imaging (MRI) data analysis. A novel method called Respiratory noise Correction using Phase information is proposed to retrospectively correct for the respiratory noise in functional MRI (fMRI) time series.
Hu, Cheng, Yu, Li
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Phase noise suppression in MIMO OFDM systems with incoherent phase noise

2011 - MILCOM 2011 Military Communications Conference, 2011
This paper presents a remedy to the phase noise problem in the multiple-input/multiple-output (MIMO), orthogonal frequency division multiplexing (OFDM) systems with incoherent phase noise. The phase noise incoherence (PNI) is a common condition that arises when different channels in a MIMO system use different local oscillator (LO) signals. Phase noise
Babak Daneshrad, null Weijun Zhu
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Phase noise in oscillators: DAEs and colored noise sources

1998 IEEE/ACM International Conference on Computer-Aided Design. Digest of Technical Papers (IEEE Cat. No.98CB36287), 1998
Oscillators are key components of electronic systems. Undesired perturbations, i.e. noise, in practical electronic systems adversely affect the spectral and timing properties of oscillators resulting in phase noise, which is a key performance limiting factor, being a major contributor to bit-error-rate (BER) of RF communication systems, and creating ...
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Phase noise effects in QAM systems

Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97, 2002
The effects of oscillator phase noise on the performance of digital transmission systems employing QAM are investigated. The model used for the phase noise is a Wiener-Levy process which allows a moment characterization of the filtered phase noise.
CORVAJA, ROBERTO, PUPOLIN, SILVANO
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Phase noise calibrator

Izmeritel`naya Tekhnika
The necessity of developing of an initial relative phase noise level standard to ensure metrological traceability of small values of phase noise measurements. The relevance of creating a standard is due to the increased requirements for short-term frequency stability of modern signal generators and highly stable quartz oscillators, characterized by a ...
Nikolay R. Bazhenov, Artem M. Barekhov, Oleg V. Kaminsky   +2 more
openaire   +1 more source