Abstract
Feature Issue on Next-Generation WDM Network Design and Routing (WDMN) We study the problems of routing and wavelength converter placement in optical networks with sparse wavelength conversion. We propose a new dynamic routing algorithm with two new path cost functions based on the concept of least-load routing (LLR) with sparse converter placement, and we discuss the application of genetic algorithms (GAs) to determine the optimal location of wavelength converters so that the call-blocking probability is minimized. Simulation results show that the proposed dynamic routing algorithms perform significantly better than shortest-path (SP) routing and fixed alternative routing (FAR) in terms of the call-blocking probability. The GA model is able to obtain a nearly optimal solution of the wavelength converter placement problem within a reasonable time, and its performance is better than that of two other popular heuristic placement algorithms.
| Original language | English |
|---|---|
| Pages (from-to) | 363-378 |
| Number of pages | 16 |
| Journal | Journal of Optical Networking |
| Volume | 3 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - Apr 2004 |
Keywords
- (060.0060) Fiber optics and optical communications : Fiber optics and optical communications
- (060.4250) Fiber optics and optical communications : Networks
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Computer Science Applications
- Computer Networks and Communications
- Electrical and Electronic Engineering
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