Joint Assignment of Power, Routing, and Spectrum in Static Flexible-Grid Networks
Artikel i vetenskaplig tidskrift, 2017

This paper proposes a novel network planning strategy to jointly allocate physical layer resources together with the routing and spectrum assignment in transparent nonlinear flexible-grid optical networks with static traffic demands. The physical layer resources, such as power spectral density, modulation format, and carrier frequency, are optimized for each connection. By linearizing the Gaussian noise model, both an optimal formulation and a low complexity decomposition heuristic are proposed. Our methods minimize the spectrum usage of networks, while satisfying requirements on the throughput and quality of transmission. Compared with existing schemes that allocate a uniform power spectral density to all connections, our proposed methods relax this constraint and, thus, utilize network resources more efficiently. Numerical results show that by optimizing the power spectral density per connection, the spectrum usage can be reduced by around 20% over uniform power spectral density schemes.

nonlinear channel

power optimization

resource allocation

Flexible-grid optical network

Författare

Li Yan

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

Erik Agrell

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

Madushanka Nishan Dharmaweera

Chalmers, Mikroteknologi och nanovetenskap, Fotonik

Henk Wymeersch

Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk

Journal of Lightwave Technology

0733-8724 (ISSN) 1558-2213 (eISSN)

Vol. 35 10 1766-1774 7833080

Adaptiva optiska nätverk: Teori och algoritmer för systemoptimering

Vetenskapsrådet (VR) (2012-5280), 2013-01-01 -- 2016-12-31.

Ämneskategorier

Elektroteknik och elektronik

DOI

10.1109/jlt.2017.2657698

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Senast uppdaterat

2022-04-05