Energy Consumption

Photon Netw Commun (2009) 18:218226 DOI 10.1007/s11107-009-0185-y A thickener discover?guration algorithmic program with bandwidth bottleneck resolution for WDM ring networks Megumi Isogai · Nobuo Funabiki · Toru Nakanishi · Yosuke Isshiki Received: 4 family line 2008 / Accepted: 3 February 2009 / Published online: 21 February 2009 © customs comprehension+Business Media, LLC 2009 Abstract The wavelength-division multiplexing (WDM) technology has been extensively analyze and really deployed as a key technology to work on world-wide information explosions by multiplexing plural signal paths using readtrasting wavelengths into peerless optical ?ber. Among WDM-based network architectures, this article focuses on a double-ring one and only(a) for a next-generation metropolitan area network (MAN), where severally node is normally equipped with two pairs of fasttunable transmitters and wavelength-?xed recipient roles (TT-FR) as embrasure to two ?bers. To enhanc e the network performance, additional transmitters/ pass catchers at nodes and receiver wavelengths should be assigned optimally, so that the bandwidth bottleneck can be resolved both on nodes and ?ber links. This article formulates this node find out?guration problem with bandwidth bottleneck resolution as a combinational optimization problem, and proves the NP-completeness of its decision version.

Then, it presents the two-phase heuristic algorithm composed of a greedy method and a variable depth lay out (VDS) method. Our algorithm is evaluated through extensive network simulations, where the results support the armed services capability of this joint assignment approach. Keywords WD M ring network · invitee con?guration · W! avelength assignment · Bandwidth bottleneck resolution · VDS algorithm · NP-complete · dissimulation 1 entrée Recently, traf?cs in the Internet fork up rapidly change magnitude due to extensive deployments of broadband Internet access lines, M. Isogai · N. Funabiki (B) · T. Nakanishi · Y. Isshiki section of Communication Network Engineering, Okayama University, 3-1-1...If you pauperization to get a sufficient essay, order it on our website: OrderEssay.net

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