PROJECT TITLE :

Routing and wavelength assignment in a satellite optical network based on ant colony optimization with the small window strategy

ABSTRACT:

Ant colony optimization (ACO) with the little window strategy is place forward to unravel the routing and wavelength assignment problem in satellite optical networks. The intersatellite distance, link length, and wavelength idle ratio are introduced because the heuristic functions, and the small window strategy is used to push the convergence speed. By calculating the intersection of idle wavelengths on adjacent links, the algorithm can accomplish routing selection and wavelength assignment on a single ant. The results show that, compared with the Dijkstra+FF algorithm, the blocking likelihood of ACO can decrease by fiftyp.c at most, and improvement of the resource utilization ratio will reach 45p.c.