Abstract

In this paper, we study the joint resource allocation in flexible-grid networks based on a nonlinear physical layer impairment model. An optimization problem is formulated to assign resources and guarantee the signal quality for every channel. Compared with the resource allocation in a fixed-grid wavelength-division multiplexing scenario, our method achieves significant bandwidth reduction and transmission distance extension in flexible-grid networks. The maximum spectrum usage is shown to be insensitive to the ordering of channels. We also analyze the relation between modulation formats and transmission distance based on the results of the proposed method. Finally, we demonstrate the performance and scalability of the proposed algorithm in ring networks.

© 2015 Optical Society of America

Load-Aware Nonlinearity Estimation for Elastic Optical Network Resource Optimization and Management

Rui Wang, Sarvesh Bidkar, Fanchao Meng, Reza Nejabati, and Dimitra Simeonidou
J. Opt. Commun. Netw. 11(5) 164-178 (2019)

Cross-layer static resource provisioning for dynamic traffic in flexible grid optical networks

Yuxin Xu, Erik Agrell, and Maite Brandt-Pearce
J. Opt. Commun. Netw. 13(3) 1-13 (2021)

Resource Allocation for Elastic Optical Networks Using Geometric Optimization

Mohammad Hadi and Mohammad Reza Pakravan
J. Opt. Commun. Netw. 9(10) 889-899 (2017)

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)

Channel allocation in elastic optical networks using traveling salesman problem algorithms

Chayan Bhar, Erik Agrell, Kamran Keykhosravi, Magnus Karlsson, and Peter A. Andrekson
J. Opt. Commun. Netw. 11(10) C58-C66 (2019)