Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group
  • Journal of Lightwave Technology
  • Vol. 32,
  • Issue 23,
  • pp. 3894-3901
  • (2014)

Trading Regeneration and Spectrum Utilization in Code-Rate Adaptive Flexi-Grid Networks

Not Accessible

Your library or personal account may give you access

Abstract

Introduced to improve the spectral efficiency, time-frequency packing technique allows the exploitation of different code rates, leading to different levels of spectral utilization and all-optical reach. To ensure quality of transmission of the optical signal, opto-electronic regeneration must be used to propagate the transmission beyond the maximum optical reach and can inherently offer conversion of spectrum and code rate. In this way, multiple code rates can be enabled in optical networks, leading to a flexible design in which spectrum utilization and regeneration can be properly optimized and traded. This paper addresses for the first time the joint problem of selecting the code rate, the regeneration nodes, the spectrum allocation and the route for the requested lightpaths in an optical network with a flexi-grid. A genetic algorithm is proposed that balances the contrasting objectives of minimizing the regeneration nodes and the spectrum utilization. Results show that when regeneration nodes are minimized, code-rate adaptation is able to reduce the regeneration nodes as well as the spectrum utilization with respect to rate-fixed optical networks. In general, a balance of the two contrasting objectives is preferred to achieve a low resource utilization.

© 2014 IEEE

PDF Article
More Like This
Robust Regenerator Allocation in Nonlinear Flexible-Grid Optical Networks With Time-Varying Data Rates

Li Yan, Yuxin Xu, Maïté Brandt-Pearce, Nishan Dharmaweera, and Erik Agrell
J. Opt. Commun. Netw. 10(11) 823-831 (2018)

On the Complexity of Routing and Spectrum Assignment in Flexible-Grid Ring Networks [Invited]

Massimo Tornatore, Cristina Rottondi, Roza Goscien, Krzysztof Walkowiak, Giuseppe Rizzelli, and Annalisa Morea
J. Opt. Commun. Netw. 7(2) A256-A267 (2015)

Genetic Approach for Optimizing the Placement of All-Optical Regenerators in WSON

Francesca Martinelli, Nicola Andriolli, Piero Castoldi, and Isabella Cerutti
J. Opt. Commun. Netw. 6(11) 1028-1037 (2014)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved