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The performance of high-powered wavelength-division multiplexed (WDM) optical networks can be severely degraded by four-wave-mixing- (FWM-) induced distortion. The multicanonical Monte Carlo method (MCMC) is used to calculate the probability-density function (PDF) of the decision variable of a receiver, limited by FWM noise. Compared with the conventional Monte Carlo method previously used to estimate this PDF, the MCMC method is much faster and can accurately estimate smaller error probabilities. The method takes into account the correlation between the components of the FWM noise, unlike the Gaussian model, which is shown not to provide accurate results. 相似文献
42.
Efthymia G. Gioti Theocharis V. Koftis Efstratios Neokosmidis Elli Vastardi Stefanos S. Kotoulas Sakellarios Trakossas Theodoros Tsatsas Elizabeth E. Anagnostaki Theodoros D. Panagiotidis Constantinos Zacharis Evanthia P. Tolika Anastasia-Aikaterini Varvogli Thanos Andreou John K. Gallos 《Tetrahedron》2018,74(4):519-527
A new synthesis of entecavir from d-glucose in an average total yield of 3.5% was achieved via an intramolecular nitrile oxide cycloaddition (INOC) reaction and a Peterson olefination as key-steps. The present process was designed for industrial application, using widely available raw materials, simple and cheap reagents and avoiding low reaction temperatures, which are very common in the synthetic approaches towards similarly complex structures. 相似文献
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