Abstract
We consider the offline version of the impairment-aware routing and wavelength assignment (IA-RWA) problem in transparent all-optical networks as a cross layer optimization problem. In optical networks and in the absence of regenerators, optical signal quality degrades due to physical layer impairments. We initially present an algorithm for solving the RWA problem based on an LP relaxation formulation that has acceptable integrality performance. To account for signal degradation due to physical layer impairments we extend our RWA formulation and constrain the interference among lightpaths using noise variance related parameters. The objective of the resulting optimization problem is not only to serve the connection requests by minimizing he number of utilized wavelengths, but also to select lightpaths that have acceptable physical layer performance.
Original language | English |
---|---|
Title of host publication | Proceedings - 2009 IEEE Information Theory Workshop on Networking and Information Theory, ITW 2009 |
Pages | 115-119 |
Number of pages | 5 |
DOIs | |
Publication status | Published - 2009 |
Externally published | Yes |
Event | IEEE Information Theory Workshop on Networking and Information Theory 2009 - University of Thessaly, Volos, Greece Duration: 10 Jun 2009 → 12 Jun 2009 https://www.ieee.org/conferences_events/conferences/conferencedetails/index.html?Conf_ID=14650 |
Conference
Conference | IEEE Information Theory Workshop on Networking and Information Theory 2009 |
---|---|
Abbreviated title | ITW 2009 |
Country/Territory | Greece |
City | Volos |
Period | 10/06/09 → 12/06/09 |
Internet address |
Keywords
- Cross layer optimization
- Physical layer impairments
- Routing and wavelength assignment
- Transparent alloptical networks