公开(公告)号：US09209753B2

公开(公告)日：2015-12-08

申请号：US14552056

申请日：2014-11-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuxiang Xiao ,  Erni Zhu ,  Anding Zhu

IPC: H04K1/02 ,  H04L25/03 ,  H04L25/49 ,  H03F1/32 ,  H03F3/19 ,  H03F3/24 ,  H04B1/04

CPC classification number: H03F1/3247 ,  H03F1/3241 ,  H03F1/3252 ,  H03F1/3258 ,  H03F3/19 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/36 ,  H03F2200/39 ,  H03F2200/451 ,  H03F2201/3209 ,  H03F2201/3215 ,  H03F2201/3224 ,  H03F2201/3227 ,  H04B1/0475 ,  H04B2001/0408 ,  H04B2001/0425 ,  H04L27/368

Abstract: A predistortion correction method, a predistortion correction apparatus, a transmitter, and a base station are provided. The method includes: performing, based on a digital predistortion model, non-linear processing on an input transmit signal to obtain higher-order distortion time-domain signals; and obtaining, after performing processing on the higher-order distortion time-domain signals, a predistortion signal to be input to a power amplifier, where a process of converting the higher-order distortion time-domain signals to the predistortion signal includes bandwidth limitation processing, so that the predistortion signal to be input to the power amplifier is a predistortion signal within a preset bandwidth. Embodiments of the present invention can ensure predistortion accuracy, and can also reduce a requirement for a bandwidth and a sampling rate of a feedback channel, thereby reducing a predistortion cost.

Abstract translation: 提供了预失真校正方法，预失真校正装置，发射机和基站。 该方法包括：基于数字预失真模型对输入发射信号进行非线性处理，以获得更高阶失真时域信号; 在对高阶失真时域信号执行处理之后，获得要输入到功率放大器的预失真信号，其中将高阶失真时域信号转换为预失真信号的处理包括带宽限制处理 ，使得要输入到功率放大器的预失真信号是预设带宽内的预失真信号。 本发明的实施例可以确保预失真精度，并且还可以减少对反馈信道的带宽和采样率的要求，从而降低预失真成本。

公开(公告)号：US20150078484A1

公开(公告)日：2015-03-19

申请号：US14552056

申请日：2014-11-24

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yuxiang Xiao ,  Erni Zhu ,  Anding Zhu

IPC: H03F1/32 ,  H03F3/19 ,  H04B1/04 ,  H03F3/24

CPC classification number: H03F1/3247 ,  H03F1/3241 ,  H03F1/3252 ,  H03F1/3258 ,  H03F3/19 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/36 ,  H03F2200/39 ,  H03F2200/451 ,  H03F2201/3209 ,  H03F2201/3215 ,  H03F2201/3224 ,  H03F2201/3227 ,  H04B1/0475 ,  H04B2001/0408 ,  H04B2001/0425 ,  H04L27/368

Abstract: A predistortion correction method, a predistortion correction apparatus, a transmitter, and a base station are provided. The method includes: performing, based on a digital predistortion model, non-linear processing on an input transmit signal to obtain higher-order distortion time-domain signals; and obtaining, after performing processing on the higher-order distortion time-domain signals, a predistortion signal to be input to a power amplifier, where a process of converting the higher-order distortion time-domain signals to the predistortion signal includes bandwidth limitation processing, so that the predistortion signal to be input to the power amplifier is a predistortion signal within a preset bandwidth. Embodiments of the present invention can ensure predistortion accuracy, and can also reduce a requirement for a bandwidth and a sampling rate of a feedback channel, thereby reducing a predistortion cost.

Abstract translation: 提供了预失真校正方法，预失真校正装置，发射机和基站。 该方法包括：基于数字预失真模型对输入发射信号进行非线性处理，以获得更高阶失真时域信号; 在对高阶失真时域信号执行处理之后，获得要输入到功率放大器的预失真信号，其中将高阶失真时域信号转换为预失真信号的处理包括带宽限制处理 ，使得要输入到功率放大器的预失真信号是预设带宽内的预失真信号。 本发明的实施例可以确保预失真精度，并且还可以减少对反馈信道的带宽和采样率的要求，从而降低预失真成本。