The rapid development of Internet has greatly promote the research progress of optical network.As the Wavelength-Division Multiplexing(WDM) technology matures gradually, the factors that restricting the capacities of optical network transmission is no longer the bandwidth of fiber,but the networks bottleneck caused by the processing speed of shop 4u blog for shirts electronic equipments,such as routers,switches and multiplexers in networks.The emergence of traffic grooming technology has provided an effective approach to solve these problems.Recently,traffic cheap nike shoes grooming problem is one of the research frontiers and a hot topoic in optical ugg boots 2010 network studies.Traffic grooming problem mainly cheap nike shoes studies how to pack lower rate traffic streams of dresses 1std different speeds and different types onto higher rate traffic streams and multiplex onto the available wavelengths,effectively.For instance,a lightpath of an OC-48 SONET ring can support up to 16 OC-3 simultaneous best clothes blog communication requests.In alloptical networks,WDM technology can transmit kinds of signals blog wedding dresses 2010 on single fiber,and each signal use distinct wavelength.Thus,Wavelength Assignment Problem is to find a path for a pair of requests for communication,and assign a wavelenth to it such that two paths sharing the same link have distinct wavelenth.In terms of graph-theoretic,Wavelength Assignment Problem can be viewed as assigning colors to given paths so that these paths sharing an edge have different colors.
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