دانلود رایگان مقاله اعمال نفوذ مدولاسیون تطبیقی با مسیریابی چند هاپ در شبکه نوری الاستیک

Abstract

The technology used for data transmission in optical networks is going through significant changes in response to the rapid growth of Internet traffic and emerging high performance applications, boosting research on how to satisfy the increasing demands with the available resources. In this scenario, the elastic optical networks paradigm enables improved provisioning through flexibility and scalability in spectrum assignment. This work proposes data and optical grooming and the use of spectral modulation control as a solution to the Routing, Modulation Level, and Spectrum Allocation problem in a dynamic traffic context. The proposed algorithm obtains the greatest spectrum aggregation possible using higher modulation levels through multiple hops in the virtual topology. Experiments show that this approach results in reduced blocking without impacting the use of the network’s resources.

6. Conclusions

The recent growth of Internet traffic and emerging applications demand high performance of the optical networks, but the current technology’s rigid nature hinders the transmission of new demands, enforcing fixed data rates and reducing efficiency of the network’s resources. In this context, elastic optical networks have become increasingly interesting due to their capacity to provide flexible transmission rates that adapt to the heterogeneous traffic demands, which brings a new perspective on future Internet demands. This works focuses on solving the routing, modulation level, and spectrum allocation problem in a dynamic context through spectral modulation control, traffic and optical grooming. The proposed Maximizing the Use of Best Modulation Format approach associates these techniques to make better use of the networks’ spectral resources and to satisfy larger data rate demands by using higher modulation levels through multiple hops in the virtual topology.