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Design techniques of two‐layer architectures for WDM optical networks
Author(s) -
Borella Andrea,
Cancellieri Giovanni,
Chiaraluce Franco
Publication year - 2001
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.448
Subject(s) - computer science , wavelength division multiplexing , simulated annealing , transmission (telecommunications) , wavelength , computer network , mathematical optimization , telecommunications , topology (electrical circuits) , distributed computing , algorithm , optics , mathematics , physics , combinatorics
A general method for designing multilayered WDM optical networks, based on the combined use of single‐and multi‐hop connection modes, is presented. It takes into account variable values for the number of users and wavelengths in each cluster. Closed form expressions are derived for the transmission capacity and the optimum number of channels for intra‐cluster communications, either in the case of uniform or non‐uniform traffic distribution. The analytical approach is particularly useful in the presence of constraints on the number of wavelengths, due to technological limits or non‐linear phenomena, when sub‐optimal solutions must be necessarily addressed. The proposed method is integrated with the adoption of well‐known selection procedures, like simulated annealing or genetic algorithms, to reduce the computational effort. Copyright © 2001 John Wiley & Sons, Ltd.