Huawei Technologies Co., Limited

Huaping Shi

Li Zhang

Yong Qiu

Song Ping Chen

Hai Li

Xiaoshu Si

Yanzhao Pang

Xianfeng Li

Sergio Bianchi

Dmitry Anatolievich Dolgikh

Christian Mazzucco

Victor Ivanovich Dzhigan

Shudong Huo

Anton Igorevich Smekalov

XianFeng Li

Song Chen

Bakhurin Sergey

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.

Predistortion device

The present invention relates to the field of communications technologies and discloses a data processing method and apparatus to obtain a DPD non-linear distortion compensation coefficient under a QPSK mode. The embodiments of the present invention receive a first data flow, and perform interpolation into the first data flow to obtain a second data flow; receive a third data flow, and calculate a data flow signal quality difference between the third data flow and the second data flow; and obtain a DPD non-linear distortion compensation coefficient according to the data flow signal quality difference and the third data flow or the second data flow. The embodiments of the present invention are applicable to the scenarios of obtaining a DPD non-linear distortion compensation coefficient in QPSK mode.

Data processing method and apparatus

Embodiments of the present invention disclose a microwave predistorted signal generating method and apparatus. A microwave receiver receives a first received signal that has undergone analog-to-digital conversion; performs channel compensation on the first received signal, to obtain a second received signal; estimates a first transmitted signal according to the second received signal, where the first transmitted signal is a transmitted signal of a microwave transmitter before digital-to-analog conversion; performs predistortion coefficient computation according to the second received signal and the first transmitted signal; performs, by using a first-order coefficient obtained through the predistortion coefficient computation, linear distortion compensation on the second received signal that is before the first transmitted signal is estimated; and sends other predistortion coefficients except for the first-order coefficient to the microwave transmitter, so that the microwave transmitter performs non-linearity predistortion on a transmitted signal.

Microwave predistorted signal generating method and apparatus

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Chengdu, China

Huaping Shi