为了解决频谱碎片问题, 针对弹性光网络中业务调制格式可变的特点提出了一种基于调制格式的重构算法, 并给出了这种算法与最短径重构算法的仿真比较。仿真结果表明, 基于调制格式的频谱重构算法能够更灵活地改变频谱子载波的分配问题, 在相同的网络条件下可以有效提高频谱资源利用率。

To solve the problem of spectrum fragmentation, this paper proposes a modulation format-based spectrum reconstruction algorithm taking into consideration the feature of variable service modulation format in elastic optical networks and compares in simulation this algorithm with the shortest-path reconstruction algorithm. The results show that the proposed algorithm more flexibly changes the allocation of spectrum subcarriers and effectively improves the utilization of spectrum resources under the same network conditions.