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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 28, Iss. 20 — Oct. 15, 2010
  • pp: 3029–3040

A Novel Offline Physical Layer Impairments Aware RWA Algorithm With Dedicated Path Protection Consideration

Siamak Azodolmolky, Mirosław Klinkowski, Yvan Pointurier, Marianna Angelou, Davide Careglio, Josep Solé-Pareta, and Ioannis Tomkos

Journal of Lightwave Technology, Vol. 28, Issue 20, pp. 3029-3040 (2010)

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Physical layer impairments accumulate as light propagates through a lightpath in the transparent optical networks. Therefore, it is possible to provision a lightpath, while its quality of transmission (QoT) does not meet the required threshold. Considering the physical layer impairments in the network planning phase gives rise to a set of offline Impairments Aware Routing and Wavelength Assignment (IA-RWA) algorithms. There are very few offline IA-RWA algorithms that consider dedicated path protection demands. In this work we propose a novel offline IA-RWA algorithm, called Rahyab and perform a comparative performance evaluation study, which considers two enhanced algorithms from the literature. Simulation results indicates that demand pre-processing, diverse routing, and adaptive wavelength assignment are the main reasons of lower blocking rate of Rahyab algorithm compared to the selected algorithms.

© 2010 IEEE

Siamak Azodolmolky, Mirosław Klinkowski, Yvan Pointurier, Marianna Angelou, Davide Careglio, Josep Solé-Pareta, and Ioannis Tomkos, "A Novel Offline Physical Layer Impairments Aware RWA Algorithm With Dedicated Path Protection Consideration," J. Lightwave Technol. 28, 3029-3040 (2010)

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