Design and Simulation of Spectrum Defragmentation Algorithm Based on Multiple Criteria Decision Making

In order to effectively reduce the blocking rate of optical networks, a spectrum defragmentation algorithm in elastic optical networks is proposed This paper mainly studies the spectrum defragmentation, designs a spectrum defragmentation algorithm based on Multiple Criteria Decision Making (MCDM), and USES Delphi programming tool to simulate and verify it. The results show that this algorithm can effectively reduce the blocking rate of the network while improving the spectrum utilization.