发明名称 |
Digital predistorter for a wideband power amplifier and adaptation method |
摘要 |
An apparatus and method for eliminating the spurious signal of a non-linear amplifier in a base station transmitter of a mobile communication system are provided. A digital predistorter includes first and second predistorters, each having a memoryless non-linearity part using a look-up table and a memory non-linearity part using an finite impulse response (FIR) filter. The first predistorter adaptively updates the look-up tables, while the second predistorter adaptively updates the filtering coefficients of the FIR filters. According to another embodiment of the present invention, a digital predistorter has a memoryless non-linearity part using a look-up table and a memory non-linearity part using an FIR filter, and adaptively updates the look-up table and the filtering coefficients of the FIR filter.
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申请公布号 |
US7333559(B2) |
申请公布日期 |
2008.02.19 |
申请号 |
US20030744087 |
申请日期 |
2003.12.24 |
申请人 |
SAMSUNG ELECTRONICS CO. LTD. |
发明人 |
SONG YOO-SEUNG;HWANG KI-HWAN |
分类号 |
H04K1/02;H03F1/32;H04L27/36 |
主分类号 |
H04K1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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