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

Volume

13

Issue

5

fYear

2009

fDate

5/1/2009 12:00:00 AM

Firstpage

345

Lastpage

347

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.;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/LCOMM.2009.081635

Filename

4939347