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.

公开(公告)号：US20230047734A1

公开(公告)日：2023-02-16

申请号：US17781521

申请日：2020-10-29

Applicant: ZTE CORPORATION

Inventor： Yi WANG ,  Hongxing ZHOU ,  Zhe ZHANG ,  Zuofeng ZHANG ,  Dongfang NING

IPC: H03M1/10

Abstract: Provided are a Time-Interleaved Successive Approximation Register Analog-to-Digital Converter, TISAR ADC, and a calibration method thereof. The calibration method for the TISAR ADC may include: sampling an analog signal input into the TISAR ADC to generate a reference digital signal (S130); according to the reference digital signal and output digital signals generated by analog-to-digital conversion sub-modules of the TISAR ADC, obtaining capacitor array calibration parameters and time delay calibration parameters of the analog-to-digital conversion sub-modules; adjusting capacitor arrays of the corresponding analog-to-digital conversion sub-modules according to the capacitor array calibration parameters, respectively; and adjusting time delays of the corresponding analog-to-digital conversion sub-modules according to the time delay calibration parameters, respectively.

公开(公告)号：US20230035416A1

公开(公告)日：2023-02-02

申请号：US17758090

申请日：2020-12-28

Applicant: ZTE CORPORATION

Inventor： Wenhao DU ,  Yanru CAO ,  Dongfang NING ,  Zhengjian DAI ,  Zuofeng ZHANG ,  Qiulin HUANG

IPC: H04B7/08 ,  H04B7/0456

Abstract: An antenna array decoupling method, apparatus and system, and a non-transitory computer-readable storage medium are disclosed. The method may include: receiving predetermined digital domain signals of a plurality of channels, each of the plurality of channels being a data channel corresponding to a respective one of array elements in an antenna array (S110); determining decoupling factors of channels involved in decoupling corresponding to each channel, the decoupling factors being factors which have been solved for beforehand according to measured in-array pattern information of each array element in the antenna array (S120); and processing the predetermined digital domain signals of the channels involved in decoupling corresponding to each channel according to the decoupling factors to obtain a decoupled predetermined digital domain signal of each channel (S130).

公开(公告)号：US20220345091A1

公开(公告)日：2022-10-27

申请号：US17640462

申请日：2020-09-16

Applicant: ZTE Corporation

Inventor： Guangliang LIN ,  Jing YUAN ,  Dongfang NING ,  Zhengjian DAI

IPC: H03F1/32 ,  H04L25/03 ,  H04B1/04 ,  H03F3/24

Abstract: A digital pre-distortion method for a multiband signal, an electronic device and a non-transitory computer-readable storage medium are disclosed. The digital pre-distortion method may include: determining a possible power amplifier distortion according to configuration of a signal issued by a cell; selecting a basis function of pre-distortion according to the possible power amplifier distortion; solving, according to a pre-collected reference multiband signal and a corresponding feedback signal, the selected basis function to obtain a pre-distortion parameter; and processing an input multiband signal according to the selected basis function and the pre-distortion parameter to generate a pre-distortion signal.

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.