| 发明名称 | Distortion compensation apparatus and method therefor | ||
| 摘要 | A distortion compensation apparatus includes a pre-distorter, a gain control unit, and a learning unit. The pre-distorter adds distortion according to compensation coefficients to individual input signals prior to the input signals being input to a power amplifier. The gain control unit applies gain control to individual feedback signals fed back from the power amplifier according to a maximum level of the feedback signals within a time frame. The learning unit updates the compensation coefficients used by the pre-distorter, using the feedback signals subjected to the gain control by the gain control unit. | ||
| 申请公布号 | US9444412(B2) | 申请公布日期 | 2016.09.13 |
| 申请号 | US201414446569 | 申请日期 | 2014.07.30 |
| 申请人 | FUJITSU LIMITED | 发明人 | Lozhkin Alexander Nikolaevich |
| 分类号 | H03F1/26;H03F1/32;H03G3/30;H03F3/24 | 主分类号 | H03F1/26 |
| 代理机构 | Fujitsu Patent Center | 代理人 | Fujitsu Patent Center |
| 主权项 | 1. A distortion compensation apparatus for compensating nonlinear distortion of a power amplifier, comprising: a pre-distorter configured to add distortion according to compensation coefficients to individual input signals prior to the input signals being input to the power amplifier; a gain control unit configured to apply gain control to individual feedback signals according to a maximum level of the feedback signals within a time frame, the feedback signals being fed back from the power amplifier; and a learning unit configured to update the compensation coefficients used by the pre-distorter, using the feedback signals subjected to the gain control. | ||
| 地址 | Kawasaki JP | ||