公开(公告)号：US10171041B2

公开(公告)日：2019-01-01

申请号：US15975340

申请日：2018-05-09

Applicant: Huawei Technologies Co., Ltd.

Inventor： Victor Ivanovich Dzhigan ,  Dmitry Anatolievich Dolgikh ,  Anton Igorevich Smekalov ,  Huaping Shi

IPC: H03F1/32 ,  H04B1/04

Abstract: The disclosure relates to a predistortion device for a non-linear PA device, comprising: an input terminal for receiving an input signal; a predistortion filter, connected between the input terminal and the non-linear PA device; a first delay element, coupled to the input terminal, and configured to delay the input signal by a time delay D to provide a delayed input signal; and an adaptive filter unit, comprising an adaptive filter having adjustable filter weights, and configured to filter the delayed input signal, and an adjusting unit, wherein the adjusting unit is configured to process an adaptive algorithm, based on the delayed input signal, to adjust the filter weights of the adaptive filter, and to provide both the adaptive filter and the predistortion filter with the same adjusted filter weights.