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. ; Peer Reviewed ; Postprint (published version)
A novel offline physical layer impairments aware RWA algorithm with dedicated path protection consideration
2010-10-15
Article (Journal)
Electronic Resource
English
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Telecomunicació òptica , Optical communications -- Quality control , Dedicated path protection , Impairments aware RWA , Physical layer impairments , Routing and wavelength assignment , Xarxes de telecomunicació òptiques -- Control de qualitat
DDC: | 629 |
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