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Mitigation of non-linear signal perturbations using truncated volterra-based non-linear echo canceler
Mitigation of non-linear signal perturbations using truncated volterra-based non-linear echo canceler
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机译：使用截断的基于Volterra的非线性回声消除器来缓解非线性信号扰动
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摘要
A non-linear echo cancellation scheme for a digital transceiver coupled to a wireline medium effectively mitigates against non-linear line perturbations that may cause disruption of digital communication services. A first embodiment employs a fast, linear echo canceler, and a truncated non-linear Volterra canceler coupled to an error cancellation location in the data signal flow path downstream of the data pump's linear equalizer. A second embodiment employs only a nonlinear Volterra echo canceler, the output of which is coupled to an error cancellation location in the data signal flow path upstream of the data pump's linear equalizer. A third embodiment employs a linear echo canceler with high gain setting on selected taps, and a truncated non-linear Volterra canceler coupled to an error cancellation location in the data signal flow path downstream of the data pump's linear equalizer.
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