公开(公告)号：US20220224290A1

公开(公告)日：2022-07-14

申请号：US17607303

申请日：2019-12-31

Applicant: ZTE Corporation

Inventor： Yunhua LI ,  Zheyuan ZHANG ,  Wenhao DU ,  Dongfang NING ,  Zuofeng ZHANG ,  Zhengjian DAI

IPC: H03F1/32 ,  H03F3/21 ,  H03F1/02

Abstract: A device, method, and system for signal distortion pre-correction, and a composite system are disclosed. The device-includes: a signal distortion correction network module, a correction parameter trainer, a data collection module connected to an external power amplifier module, and a first conversion module. The data collection module is configured to perform time-division collection on output signals of channels of the power amplifier module and output analog feedback signals to the first conversion module. The first conversion module is configured to convert the analog feedback signals into digital feedback signals. The correction parameter trainer is configured to determine a correction parameter according to the digital feedback signals and a forward signal inputted. The signal distortion correction network module is configured to correct the forward signal based on the correction parameter and output a pre-corrected signal.

公开(公告)号：US20230275605A1

公开(公告)日：2023-08-31

申请号：US18003557

申请日：2021-06-22

Applicant: ZTE CORPORATION

Inventor： Zheyuan ZHANG ,  Dongfang NING ,  Songkun CHEN ,  Yanru CAO ,  Zhengjian DAI ,  Guangyu HU ,  Zuofeng ZHANG

IPC: H04B1/04

CPC classification number: H04B1/0475

Abstract: The embodiments of the present application relate to the field of communications, and provide a signal distortion pre-correction method, a signal distortion pre-correction device, and a non-volatile storage medium. In the present application, the mutual coupling filtering parameters and the predistortion coefficient candidate set are obtained by training the feedback signal collected by the multi-channel coupling element, so that the mutual coupling filtering processing can be performed on the forward signal of the digital channel according to the obtained mutual coupling filtering parameter, to make the target predistortion coefficient selected in the predistortion coefficient candidate set according to the forward signal after mutual coupling filtering and the forward signal of the digital channel to be processed to be the predistortion coefficient considering the mutual coupling factor of the digital channel.