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arXiv 2104.01428eess.SP
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基于微扰的收发器噪声特性

Transceiver Noise Characterization based on Perturbations

F. J. Vaquero-Caballero, D. J. Ives, S. J. Savory

摘要:

在本文中,我们讨论了一种新的技术,用于测量收发器噪声,偏斜,并检测未补偿的收发器损伤。该方法包括在发射机处引入频域陷波或陷波,这允许估计传输链上不同阶段的信噪比和失真比(SNDR)。所提出的技术需要使用调制解调器接收器、光学频谱分析仪(OSA)、示波器或电频谱分析仪(ESA)来检测信号频谱,这取决于测量频谱的阶段,并且需要对接收到的信号进行最小的处理。我们的分析重点是Ciena的WaveLogic Ai商用收发器和95 Gbaud DAC。我们证明了对称放置的频域陷波可以用来减轻串扰对SNDR估计的影响。最后,我们展示了如何一个单一的陷波频谱可以用来检测和补偿损伤,我们进行偏斜估计作为一个例子。

英文摘要:

In this paper, we discuss a new technique for measuring transceiver noise, skew, and for the detection of uncompensated transceiver impairments. The method consists on the introduction of frequency domain notch or notches at the transmitter, which allows to estimate of the Signal-to-Noise and Distortion Ratio (SNDR) at different stages over the transmission chain. The proposed technique requires the detection of the signal spectrum using either: a modem receiver, an Optical Spectrum Analyzer (OSA), an oscilloscope, or an Electrical Spectrum Analyzer (ESA), depending on the stage where the spectrum is measured and requiring minimal processing of the received signal. Our analysis is focused on Ciena's WaveLogic Ai commercial transceiver and a 95 Gbaud DAC. We demonstrate that symmetrically placed frequency domain notches can be used to mitiguate the influence of crosstalk on the SNDR estimates. Finally, we show how a single notch spectrum can be used to detect and compensate for impairments, and we perform skew estimation as an example.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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