Resource Allocation for Flexible-Grid Optical Networks With Nonlinear Channel Model
Journal article, 2015

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.

Gaussian noise model

Network optimization

Optical fiber communications

Resource allocation

Author

Li Yan

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Erik Agrell

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Henk Wymeersch

Chalmers, Signals and Systems, Kommunikationssystem, informationsteori och antenner, Communication Systems

Maïté Brandt-Pearce

University of Virginia

Journal of Optical Communications and Networking

1943-0620 (ISSN)

Vol. 7 11 B101-B108 7331135

Adaptive optical networks: Theory and algorithms for system optimization

Swedish Research Council (VR), 2013-01-01 -- 2016-12-31.

Areas of Advance

Information and Communication Technology

Subject Categories

Telecommunications

DOI

10.1364/JOCN.7.00B101

More information

Latest update

3/29/2018