Invention Grant
US08649745B2 Adaptive predistortion for a non-linear subsystem based on a model as a concatenation of a non-linear model followed by a linear model
有权
基于模型的非线性子系统的自适应预失真作为非线性模型的连接，后跟线性模型
- Patent Title: Adaptive predistortion for a non-linear subsystem based on a model as a concatenation of a non-linear model followed by a linear model
- Patent Title (中): 基于模型的非线性子系统的自适应预失真作为非线性模型的连接，后跟线性模型
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Application No.: US13333407Application Date: 2011-12-21
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Publication No.: US08649745B2Publication Date: 2014-02-11
- Inventor: Chunlong Bai , Chunyun Jian
- Applicant: Chunlong Bai , Chunyun Jian
- Applicant Address: SE Stockholm
- Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee: Telefonaktiebolaget L M Ericsson (publ)
- Current Assignee Address: SE Stockholm
- Agency: Withrow & Terranova, PLLC
- Main IPC: H04B1/04
- IPC: H04B1/04
Abstract:
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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