Link-Level Resource Allocation for Flexible-Grid Nonlinear Fiber-Optic Communication Systems
Journal article, 2015
Resource allocation for transport optical networks has traditionally used a transmission reach constraint to estimate physical impairments. For flexible-grid networks, nonlinear impairments are not sufficiently well characterized by the transmission reach since various modulations and bandwidths can coexist on the same link. We propose a resource allocation algorithm for a single flexible-grid fiber link based on a nonlinear signal distortion model, as a first step towards whole-network design. An optimization problem is formulated to provide a close-to-optimal resource allocation that guarantees the quality of transmission for every channel. Compared with a simpler algorithm based on transmission reach, our proposed algorithm shows the potential of bandwidth savings. It is demonstrated to be insensitive to channel ordering.
Resource allocation
nonlinear channel
Author
Li Yan
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Erik Agrell
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Henk Wymeersch
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Pontus Johannisson
Chalmers, Microtechnology and Nanoscience (MC2), Photonics
Rocco Di Taranto
Chalmers, Signals and Systems, Communication, Antennas and Optical Networks
Maite Brandt-Pearce
University of Virginia
IEEE Photonics Technology Letters
1041-1135 (ISSN) 19410174 (eISSN)
Vol. 27 12 1250-1253 7064696Channel Models and Communications Methods for Location-Aware Communication
Swedish Research Council (VR) (2011-6864), 2012-01-01 -- 2013-12-31.
Adaptive optical networks: Theory and algorithms for system optimization
Swedish Research Council (VR) (2012-5280), 2013-01-01 -- 2016-12-31.
Areas of Advance
Information and Communication Technology
Subject Categories
Communication Systems
DOI
10.1109/LPT.2015.2415586