Routing, modulation, spectrum and launch power assignment to maximize the traffic throughput of a nonlinear optical mesh network
Routing, modulation, spectrum and launch power assignment to maximize the traffic throughput of a nonlinear optical mesh network
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DOI：
10.1007/s11107-015-0488-0
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发表时间：
2015-06
影响因子：
1.7
通讯作者：
D. Ives;P. Bayvel;S. Savory
中科院分区：
文献类型：
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作者：
D. Ives;P. Bayvel;S. Savory
我们调查的路由，调制格式自适应，频谱和发射功率分配的优化，提高有限的网络资源的利用率和增加网络吞吐量的一种手段。我们考虑一个透明的光网络中的非线性传输制度，并使用最新的软件适应相干光技术。我们将问题分解为路由选择、调制自适应和信道分配，然后是信道频谱分配，最后是功率分配。它示出，对于三个测试网络，发射功率分配和信道频谱分配可以提高传输SNR裕度超过固定调制，固定功率，满载链路的最坏情况约3-4 dB。可以通过调制格式自适应来利用SNR裕度的这种增加，以增加整体网络吞吐量。本文强调，在网络吞吐量的增加增益可以实现在非线性受损的网络时，个别发射机的频谱分配和发射功率进行优化，以最大限度地减少非线性干扰。
We investigate the optimization of routing, modulation format adaptation, spectral and launch power assignment as a means of improving the utilization of limited network resources and increasing the network throughput. We consider a transparent optical network operating in the nonlinear transmission regime and using the latest software adapted coherent optical techniques. We separate the problem into one of routing, modulation adaption and channel assignment, followed by channel spectral assignment, and launch power allocation. It is shown, for three test networks, that the launch power allocation and channel spectral assignment can improve the transmission SNR margin over the fixed modulation, fixed power, fully loaded link worst case by approximately 3–4 dB. This increase in SNR margin can be utilized through modulation format adaption to increase the overall network throughput. This paper highlights that increased gains in network throughput can be achieved in nonlinear impaired networks when individual transmitter spectral assignment and launch power are optimized to minimize the nonlinear interference.