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Adaptive predistortion for a non-linear subsystem based on a model as a concatenation of a non-linear model followed by a linear model
Adaptive predistortion for a non-linear subsystem based on a model as a concatenation of a non-linear model followed by a linear model
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机译:基于模型的非线性子系统的自适应预失真,该模型是非线性模型与线性模型的串联
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摘要
Systems and methods for compensating for non-linearity of a non-linear subsystem using predistortion are disclosed. In one embodiment, a system includes a non-linear subsystem and a predistorter configured to effect predistortion of an input signal of the non-linear subsystem such that the predistortion compensates for a non-linear characteristic of the non-linear subsystem. The system also includes an adaptor that adaptively configures the predistorter based on a feedback signal that is representative of an output signal of the non-linear subsystem and an input signal that is representative of the input signal of the non-linear subsystem. The adaptor generally models the non-linear subsystem as a concatenation of a non-linear model that corresponds to the non-linear characteristic of the non-linear subsystem and a linear model that corresponds to a known linear characteristic of the non-linear subsystem.
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