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Multicasts on WDM All-Optical Butterfly Networks
並列摘要
On the wavelength-division multiplexing (WDM) optical networks, when the number of wavelengths for realizing a set R of routing requests is beyond the number of wavelengths supported by an optical link, multiple rounds of routing for R are required. R={(u, v)} is a set of multicasts if each source it sends a message to at least one destination u and each destination v receives a message from exactly one source u. In this paper, we propose routing algorithms for a set of multicasts on n-dimensional WDM all-optical butterfly networks. For a network with wavelength converters, we give algorithms which realize any set of multicasts by 2(superscript [(n-1)/(k+1)]) wavelengths in k rounds of routing. For k=1, the upper bound is tight to the lower bound.
延伸閱讀
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