Results 51 to 60 of about 1,635,520 (251)

Competitive stochastic noises in coherently driven two-level atoms and quantum interference [PDF]

, 2003
A system of coherently-driven two-level atoms is analyzed in presence of two independent stochastic perturbations: one due to collisions and a second one due to phase fluctuations of the driving field. The behaviour of the quantum interference induced by
A Karpati, Agarwal G S, Agarwal G S, Alzetta G, Arimondo E, Cardimona D A, Carmichael H J, Dalibard J, Dum R, Eberly J H, Elliott D S, Gardiner C W, Garraway B M, Gawlik W, Grynberg G, Harris S E, Imamoglu A, J Janszky, Kimble H J, Knight P L, Mandel P, Mollow B R, P Adam, Plenio M B, Prior Y, Scully M O, Scully M O, Toor A H, Toor A H, W Gawlik, Wilson-Gordon A D, Xia H R, Zhou P, Zhou P, Zhou P, Zhu S Y, Zhu S Y, Zhu S Y   +37 more
core   +2 more sources

Feedforward data-aided phase noise estimation from a DCT basis expansion [PDF]

, 2008
This contribution deals with phase noise estimation from pilot symbols. The phase noise process is approximated by an expansion of discrete cosine transform (DCT) basis functions containing only a few terms.
Bhatti, Jabran, Moeneclaey, Marc
core   +3 more sources

Spectral Weighting Functions for Single-symbol Phase-noise Specifications in OFDM Systems [PDF]

, 2003
For the specification of phase-noise requirements for the front-end of a HiperLAN/2 system we investigated available literature on the subject. Literature differed in several aspects.
Hoeksema, Fokke, Schiphorst, Roel, Slump, Kees   +2 more
core   +2 more sources

Noise Properties of Superconducting Coplanar Waveguide Microwave Resonators [PDF]

, 2007
We have measured noise in thin-film superconducting coplanar waveguide resonators. This noise appears entirely as phase noise, equivalent to a jitter of the resonance frequency.
Benjamin A. Mazin, Henry G. LeDuc, Jiansong Gao, Jonas Zmuidzinas, Peter K. Day, Wilhelm F. K.   +5 more
core   +2 more sources

Discrete-Time Models and Performance of Phase Noise Channels

IEEE Open Journal of the Communications Society
This paper deals with the phase noise affecting communication systems, where local oscillators are employed to obtain reference signals for carrier and timing synchronizations. The most common discrete-time phase noise channel model is analyzed, with the
Amina Piemontese, Giulio Colavolpe, Thomas Eriksson   +2 more
doaj   +1 more source

Optimal entrainment of circadian clocks in the presence of noise

, 2017
Circadian clocks are biochemical oscillators that allow organisms to estimate the time of the day. These oscillators are inherently noisy due to the discrete nature of the reactants and the stochastic character of their interactions.
Lubensky, David K., Monti, Michele, Wolde, Pieter Rein ten   +2 more
core   +1 more source

Characterization of Power-to-Phase Conversion in High-Speed P-I-N Photodiodes

, 2011
Fluctuations of the optical power incident on a photodiode can be converted into phase fluctuations of the resulting electronic signal due to nonlinear saturation in the semiconductor.
Datta, S., Diddams, S., Hati, A., Joshi, A., Nelson, C., Quinlan, F., Taylor, J.   +6 more
core   +1 more source

Mathematical models and simulations of phase noise in phase-locked loops [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2007
Phase noises in Phase-Locked Loops (PLLs) are a key parameter for communication systems that contribute the bit-rate-error of communication systems and cause synchronization problems.
Sethapong Limkumnerd, Duangrat Eungdamrong   +1 more
doaj  

Phase Noise in OFDM

, 2022
Orthogonal frequency division multiplexing (OFDM) technique provides high data rate with high spectral efficiency for operating close to the Shanon capacity bounds. With the advantages of simple channel equalization, robustness against frequency selectivity of the channel, and efficient implementation, this is a widely deployed technique.
openaire   +2 more sources

Phase noise of oscillators with unsaturated amplifiers [PDF]

Physical Review E, 2013
We study the role of amplifier saturation in eliminating feedback noise in self-sustained oscillators. We extend previous works that use a saturated amplifier to quench fluctuations in the feedback magnitude, while simultaneously tuning the oscillator to an operational point at which the resonator nonlinearity cancels fluctuations in the feedback phase.
Kenig, Eyal, Cross, M. C., Moehlis, Jeff, Wiesenfeld, Kurt   +3 more
openaire   +6 more sources