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Currently there is a growing demand towards interactive multi-media services using high capacity Hybrid Fiber Coaxial (HFC) networks. With regards to the realization of upstream traffic, many problems occur with the accumulation of noise due to the tree and branch architecture of the coaxial access network. We have figured out the typical network topology for the two-way HFC network, and pointed out...
This paper addresses the system impact of fiber nonlinear crosstalk on ultra-dense hybrid coherent optical WDM optical network. Using Volterra theory, the transmission performance in terms of error vector analysis is evaluated and different contributions of nonlinear crosstalk are calculated. Firstly Volterra theory is validated against split-step Fourier simulations considering both intensity-modulated...
Traffic engineering based on cross-layer communications to counter-act inter-channel impairments in optical networks is shown to yield significant throughput gains for a variety of traffic models.
Re-optimizing 1+1 protected networks for multiple time periods can lead to cost benefits. We show these cost reductions for a topology and a demand scenario applying traffic affecting and unaffecting rerouting of optical channels.
The solution of routing and wavelength assignment (RWA) problem allows to overlay a logical topology, comprising logical connections and routers, on a physical topology, comprising optical fibers and optical crossconnects, using either lightpaths or super-lightpaths which use a simple bit level time division multiplexing. In this paper we introduce an add-drop function which allow to reuse the super-lightpath...
This paper investigates the problem of survivable multicasting in wavelength-division-multiplexing (WDM) optical mesh networks using optical-layer mixed-sharing protection. The term ldquomixed-sharingrdquo refers to that both the schemes of ldquoself-sharingrdquo and ldquocross-sharingrdquo are implemented to protect the multicast sessions. Each link on the primary tree(s) of a multicast session engrosses...
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