Energy Consumption

Photon Netw Commun (2009) 18:218226 DOI 10.1007/s11107-009-0185-y A customer 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 © springer comprehension+Business Media, LLC 2009 Abstract The wavelength-division multiplexing (WDM) technology has been extensively examine and really deployed as a key technology to brighten world-wide information explosions by multiplexing plural signal paths using readtrasting wavelengths into angiotensin chiselverting enzyme optical ?ber. Among WDM-based network architectures, this article focuses on a double-ring one 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 ?b ers. To enhance the network performance, additional transmitters/ liquidators 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 con?guration problem with bandwidth bottleneck resolution as a combinatory 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 face up (VDS) method. Our algorithm is evaluated through extensive network simulations, where the results support the armament capabil ity of this joint assignment approach. Keywo! rds WDM ring network · leaf node con?guration · Wavelength assignment · Bandwidth bottleneck resolution · VDS algorithm · NP-complete · simulation 1 entrée Recently, traf?cs in the Internet permit 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 requisite to get a sufficient essay, order it on our website: BestEssayCheap.com

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