发明名称 |
REDUCED COMPLEXITY NONLINEAR COMPENSATION |
摘要 |
Aspects of the present invention provide techniques for compensating nonlinear impairments of a signal traversing an optical communications system. A parallel array of linear convolutional filters are configured to process a selected set of samples of the signal to generate an estimate of a nonlinear interference field. The predetermined set of samples comprises a first sample and a plurality of second samples. A processor applies the estimated nonlinear interference field to the first sample to least partially compensate the nonlinear impairment. |
申请公布号 |
US2016233963(A1) |
申请公布日期 |
2016.08.11 |
申请号 |
US201615131798 |
申请日期 |
2016.04.18 |
申请人 |
ZHUGE Qunbi;OVEIS GHARAN Shahab;REIMER Michael Andrew;O'SULLIVAN Maurice |
发明人 |
ZHUGE Qunbi;OVEIS GHARAN Shahab;REIMER Michael Andrew;O'SULLIVAN Maurice |
分类号 |
H04B10/58;H04B10/61 |
主分类号 |
H04B10/58 |
代理机构 |
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代理人 |
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主权项 |
1. An apparatus for compensating a nonlinear impairment of a signal traversing an optical communications system, the apparatus comprising:
a parallel array of linear convolution filters configured to process a selected set of samples of the signal to calculate an estimate of a nonlinear interference field, the selected set of samples comprising a first sample and a plurality of second samples; and a processor configured to apply the estimated nonlinear interference field to the first sample so as to at least partially compensate the nonlinear impairment, wherein each linear convolutional filter comprises a set of filter taps, each filter tap being configured to compute a product involving a complex coefficient representing an efficiency of nonlinear interaction, and wherein the complex coefficients are quantized to a predetermined number of levels, and the number of complex multiplication operations used to evaluate the output of each linear convolutional filter is less than the number of filter taps. |
地址 |
Kanata CA |