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Performance analysis of Robust WDM fast circuit‐switched networks with token passing in control channel
Author(s) -
AbdElmalak Samir A.,
Vaishnav Chintan,
Jayasumana Anura P.
Publication year - 2002
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.530
Subject(s) - wavelength division multiplexing , computer science , security token , channel (broadcasting) , computer network , node (physics) , control channel , wavelength , telecommunications link , optics , engineering , structural engineering , physics
WDM networks depend on predetermined, fixed wavelength channels, requiring highly stable lasers and tunable filters. Robust WDM networks, based on dynamically selected wavelengths, relax manufacturing and operating wavelength tolerance requirements leading to low‐cost implementations. A node dynamically selects a currently unused wavelength for communication, and uses it for a limited period of time for communication with a destination, thus allowing the network to tolerate wavelength variation with time. A performance model is presented for Robust WDM networks in which the right to establish WDM connections is arbitrated periodically by a control channel based on token passing. Comparison with simulation results indicates the model's ability to predict the network performance accurately. Copyright © 2002 John Wiley & Sons, Ltd.