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Hybrid scheme for fault tolerant survivable WDM optical networks: An analytical approach with wavelength conversion

Srikanth, PC and Sathyanarayana, MV and Balaraju, D and Srinivas, T (2016) Hybrid scheme for fault tolerant survivable WDM optical networks: An analytical approach with wavelength conversion. In: OPTIK, 127 (17). pp. 6906-6914.

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Official URL: http://dx.doi.org/10.1016/j.ijleo.2016.04.097

Abstract

Dynamic lightpath protection in survivable WDM networks requires finding a pair of diverse routes (i.e., a primary route and a backup route that are link-disjoint) that form a cycle upon the arrival of a new connection request. This paper presents a hybrid adaptive survivability algorithm that combines the positive effects of restoration and protection. The overall goal of the proposed approach is to improve the restoration efficiency by providing tradeoffs between proactive protection and dynamic restoration. Experimental results simulated by ns-2 network simulator and analytical results for wavelength conversion case using MATLAB 7.3 are compared. In both the case hybrid scheme achieves significantly lower blocking probability, higher throughput, higher utilization and lower restoration than the conventional dynamic survivable techniques. The results obtained by approximate analytical model are almost identical with that of ns-2 simulated results. (C) 2016 Published by Elsevier GmbH.

Item Type: Journal Article
Publication: OPTIK
Additional Information: Copy right for this article belongs to the ELSEVIER GMBH, URBAN & FISCHER VERLAG, OFFICE JENA, P O BOX 100537, 07705 JENA, GERMANY
Department/Centre: Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited: 19 Aug 2016 10:12
Last Modified: 19 Aug 2016 10:12
URI: http://eprints.iisc.ac.in/id/eprint/54382

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