Title :
A proof of wavelength conversion not improving the lagrangian bound of the static RWA problem
Author :
Zhang, James Yiming ; Wu, Jing ; Bochmann, Gregor V. ; Savoie, Michel
Author_Institution :
Sch. of Inf. Technol. & Eng., Univ. of Ottawa, Ottawa, ON
fDate :
5/1/2009 12:00:00 AM
Abstract :
The fact that wavelength conversion hardly improves the performance of static routing and wavelength assignment (RWA) in wavelength division multiplexing (WDM) networks has been observed in many previous studies. However, other than simulation results, until now there was no formal proof of such fact. In this paper, we formally prove that wavelength conversion does not improve the Lagrangian bound of the static RWA problem.
Keywords :
telecommunication network routing; wavelength assignment; wavelength division multiplexing; Lagrangian bound; static RWA problem; static routing and wavelength assignment; wavelength conversion; wavelength division multiplexing; Design optimization; Lagrangian functions; Optical fiber networks; Optical switches; Optical wavelength conversion; Relaxation methods; WDM networks; Wavelength assignment; Wavelength division multiplexing; Wavelength routing; Wavelength division multiplexing, wavelength conversion, routing and wavelength assignment, performance bound.;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2009.081635
