Chromatic Dispersion Estimation in Digital Coherent Receivers
Chromatic Dispersion Estimation in Digital Coherent Receivers
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DOI：
10.1109/jlt.2011.2145357
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发表时间：
2011-06
影响因子：
4.7
通讯作者：
Ruben Andres Soriano;F. Hauske;Neil Guerrero Gonzalez;Zhuhong Zhang;Y. Ye;I. Monroy
中科院分区：
文献类型：
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作者：
Ruben Andres Soriano;F. Hauske;Neil Guerrero Gonzalez;Zhuhong Zhang;Y. Ye;I. Monroy
偏振分集相干解调允许通过数字信号处理来补偿大的累积线性失真值。特别地，在没有光学色散补偿的未补偿链路中，残余色散（CD）的参数对于设置相应的数字滤波函数至关重要。我们提出了不同的非数据辅助（盲）CD估计方法的单载波传输的实现约束条件下，如带宽限制和采样率。各种调制格式的估计性能进行了比较的精度和鲁棒性的组合信道损伤的范围很广。
Polarization-diverse coherent demodulation allows to compensate large values of accumulated linear distortion by digital signal processing. In particular, in uncompensated links without optical dispersion compensation, the parameter of the residual chromatic dispersion (CD) is vital to set the according digital filtering function. We present different non-data-aided (blind) CD estimation methods for single-carrier transmission under implementation constraint conditions such as bandwidth limitation and sampling rate. The estimation performance for various modulation formats is compared with respect to precision and robustness for a wide range of combined channel impairments.