Learning automata: an introduction
Learning automata: an introduction
All-optical networks with sparse wavelength conversion
IEEE/ACM Transactions on Networking (TON)
Adaptive wavelength routing in all-optical networks
IEEE/ACM Transactions on Networking (TON)
Learning Automata and Stochastic Optimization
Learning Automata and Stochastic Optimization
Multiwavelength Optical Networks: A Layered Approach
Multiwavelength Optical Networks: A Layered Approach
Routing and wavelength assignment in optical networks
IEEE/ACM Transactions on Networking (TON)
Wavelength Assignment for Dynamic Traffic in Multi-fiber WDM Networks
IC3N '98 Proceedings of the International Conference on Computer Communications and Networks
Emerging Optical Network Technologies: Architectures, Protocols and Performance
Emerging Optical Network Technologies: Architectures, Protocols and Performance
Varieties of learning automata: an overview
IEEE Transactions on Systems, Man, and Cybernetics, Part B: Cybernetics
Computing approximate blocking probabilities for a class of all-optical networks
IEEE Journal on Selected Areas in Communications
Models of blocking probability in all-optical networks with and without wavelength changers
IEEE Journal on Selected Areas in Communications
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This study focuses on the routing and wavelength assignment (RWA) problem in wavelength-routed optical WDM networks. We investigate the effectiveness of adaptive algorithms based on the learning automata concept applied in relatively large networks as opposed to traditional fixed alternate routing. We also study the benefits of full wavelength conversion on the resulting connection blocking of the proposed routing algorithm as compared to routing without wavelength conversion. One of the main advantages of the proposed algorithm is that full knowledge of the network state is not necessary. By simulating a mesh network we report performance results under different traffic conditions. The study shows that both approaches have similar behaviour in case of a uniform capacity distribution with or without the wavelength continuity constraint. However, if link failures appear i.e. in case of a non-uniform capacity distribution which corresponds to practical network realisations the proposed algorithm outperforms fixed alternate routing. It is especially superior if in the previous case wavelength conversion is enabled thus resulting with large blocking reductions.