Abstract In this work, a high-performance, low-complexity modulation format identification (MFI) technique is proposed and experimentally demonstrated for coherent optical receivers using features extracted from phase statistics in Stokes space. Numerical simulations as well as long-haul experiments are carried out to validate the proposed MFI scheme. Successful identification is demonstrated among polarization-multiplexed (PM) QPSK, 8PSK, 8QAM, 16QAM, 32QAM and 64QAM signals. Compared with existing modulation identification schemes, the proposed MFI method has an excellent recognition performance with a low computational complexity.

中文翻译：

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基于Stokes空间相位统计的调制格式识别

摘要 在这项工作中，提出了一种高性能、低复杂度的调制格式识别 (MFI) 技术，并使用从斯托克斯空间相位统计中提取的特征对相干光接收器进行了实验证明。进行了数值模拟和长途实验以验证所提出的 MFI 方案。在偏振复用 (PM) QPSK、8PSK、8QAM、16QAM、32QAM 和 64QAM 信号中证明了成功识别。与现有的调制识别方案相比，所提出的 MFI 方法具有出色的识别性能和较低的计算复杂度。