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1.发明申请Predistortion Correction Method, Predistortion Correction Apparatus, Transmitter, and Base Station 有权预失真校正方法，预失真校正装置，变送器和基站公开(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
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。
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公开(公告)号：US10749485B2
公开(公告)日：2020-08-18
申请号：US16241674
申请日：2019-01-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yiwei Hong , Xianglin Li , Yuxiang Xiao
Abstract: Embodiments of the present disclosure provide a digital predistortion processing apparatus, where the apparatus includes an analog-to-digital conversion unit and n digital predistortion elements. The analog-to-digital conversion unit is connected to the n digital predistortion elements. Each digital predistortion element is configured to receive n input signals, perform digital predistortion processing on the n input signals, and then output n processed signals. The analog-to-digital conversion unit is configured to receive the n processed signals, perform signal extraction based on the n processed signals, and output an extracted signal, where a rate of the extracted signal is the same as a rate of each of the n processed signals. For an ultra-large-bandwidth signal, DPD correction may be performed without increasing a technical level of existing components such as an FPGA and an ADC, thereby greatly reducing implementation costs.
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公开(公告)号：US20190140605A1
公开(公告)日：2019-05-09
申请号：US16241674
申请日：2019-01-07
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yiwei Hong , Xianglin Li , Yuxiang Xiao
Abstract: Embodiments of the present disclosure provide a digital predistortion processing apparatus, where the apparatus includes an analog-to-digital conversion unit and n digital predistortion elements. The analog-to-digital conversion unit is connected to the n digital predistortion elements. Each digital predistortion element is configured to receive n input signals, perform digital predistortion processing on the n input signals, and then output n processed signals. The analog-to-digital conversion unit is configured to receive the n processed signals, perform signal extraction based on the n processed signals, and output an extracted signal, where a rate of the extracted signal is the same as a rate of each of the n processed signals. For an ultra-large-bandwidth signal, DPD correction may be performed without increasing a technical level of existing components such as an FPGA and an ADC, thereby greatly reducing implementation costs.
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Patent Agency Ranking
公开(公告)号：US11121734B2
公开(公告)日：2021-09-14
申请号：US16369336
申请日：2019-03-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yong Jiang , Jia Lv , Yuxiang Xiao
Abstract: A passive intermodulation elimination method, an apparatus, and a base station are disclosed. The method includes: receiving, by a network device, N pieces of backhauled information, where one piece of the backhauled information includes initial phase information of each carrier on one transmit channel, and N is an integer greater than or equal to 1; and eliminating, by the network device, a PIM of a received signal on a receive channel on the network device based on the N pieces of backhauled information.
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公开(公告)号：US10742240B2
公开(公告)日：2020-08-11
申请号：US16521598
申请日：2019-07-25
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Qian Yin , Yuxiang Xiao , Erni Zhu
Abstract: A signal processing method and device are used to obtain multi-band signals that enable a dual-input power amplifier to achieve high working performance during amplification. The device can decompose and combine analog radio frequency signals of at least two frequency bands by using an analog signal decomposition apparatus and a combination apparatus, to obtain two paths of multi-band signals whose spectra include the at least two frequency bands. The two paths of signals satisfy nonlinearity of the dual-input power amplifier. Therefore, after the two paths of signals are input into the dual-input power amplifier, the dual-input power amplifier can achieve optimal working performance.
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公开(公告)号：US10432327B2
公开(公告)日：2019-10-01
申请号：US16261056
申请日：2019-01-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaoyi Wang , Sergey Nikolaevich Dudorov , Penghuai Li , Yuxiang Xiao
IPC: H04B17/12
Abstract: An antenna array calibration method and apparatus are provided. The method includes: when first target antennas in an antenna array transmit signals, and second target antennas in the antenna array receive the signals, calculating calibration compensation values of transmit channels in the first target antennas and calibration compensation values of receive channels in the second target antennas; and when the second target antennas transmit signals, and the first target antennas receive the signals, calculating calibration compensation values of transmit channels in the second target antennas and calibration compensation values of receive channels in the first target antennas.
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公开(公告)号：US20190229760A1
公开(公告)日：2019-07-25
申请号：US16369336
申请日：2019-03-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yong JIANG , Jia Lv , Yuxiang Xiao
Abstract: A passive intermodulation elimination method, an apparatus, and a base station are disclosed. The method includes: receiving, by a network device, N pieces of backhauled information, where one piece of the backhauled information includes initial phase information of each carrier on one transmit channel, and N is an integer greater than or equal to 1; and eliminating, by the network device, a PIM of a received signal on a receive channel on the network device based on the N pieces of backhauled information.
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8.发明授权Predistortion correction method, predistortion correction apparatus, transmitter, and base station 有权预失真校正方法，预失真校正装置，发射机和基站公开(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
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。
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