Patents by Inventor Yuxiang Xiao
Yuxiang Xiao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11121734Abstract: 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.Type: GrantFiled: March 29, 2019Date of Patent: September 14, 2021Assignee: Huawei Technologies Co., Ltd.Inventors: Yong Jiang, Jia Lv, Yuxiang Xiao
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Patent number: 10749485Abstract: 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.Type: GrantFiled: January 7, 2019Date of Patent: August 18, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Yiwei Hong, Xianglin Li, Yuxiang Xiao
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Patent number: 10742240Abstract: 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.Type: GrantFiled: July 25, 2019Date of Patent: August 11, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Qian Yin, Yuxiang Xiao, Erni Zhu
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Patent number: 10623049Abstract: This application relates to the field of communications technologies, and in particular, to a digital predistortion processing method and apparatus. This application provides a digital predistortion processing method and apparatus. Digital predistortion processing of a multichannel power amplifier is supported through deprecoding processing by using one feedback link and one digital predistortion processor. In addition, after being amplified by a power amplifier, a precoded signal is fed back to the feedback link for predistortion parameter calculation, to improve quality of a transmit signal. The digital predistortion processing method and apparatus that are provided in embodiments of this application are intended to improve output linearity and efficiency of a multi-transmit-channel power amplifier while reducing implementation costs and complexity of a transmit device, and further improve overall system performance.Type: GrantFiled: May 29, 2019Date of Patent: April 14, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventors: Lie Zhang, Erni Zhu, Yuxiang Xiao
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Publication number: 20190349014Abstract: 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.Type: ApplicationFiled: July 25, 2019Publication date: November 14, 2019Inventors: Qian YIN, Yuxiang XIAO, Erni ZHU
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Patent number: 10432327Abstract: 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.Type: GrantFiled: January 29, 2019Date of Patent: October 1, 2019Assignee: Huawei Technologies Co., Ltd.Inventors: Xiaoyi Wang, Sergey Nikolaevich Dudorov, Penghuai Li, Yuxiang Xiao
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Publication number: 20190280730Abstract: This application relates to the field of communications technologies, and in particular, to a digital predistortion processing method and apparatus. This application provides a digital predistortion processing method and apparatus. Digital predistortion processing of a multichannel power amplifier is supported through deprecoding processing by using one feedback link and one digital predistortion processor. In addition, after being amplified by a power amplifier, a precoded signal is fed back to the feedback link for predistortion parameter calculation, to improve quality of a transmit signal. The digital predistortion processing method and apparatus that are provided in embodiments of this application are intended to improve output linearity and efficiency of a multi-transmit-channel power amplifier while reducing implementation costs and complexity of a transmit device, and further improve overall system performance.Type: ApplicationFiled: May 29, 2019Publication date: September 12, 2019Inventors: Lie ZHANG, Erni ZHU, Yuxiang XIAO
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Publication number: 20190229760Abstract: 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.Type: ApplicationFiled: March 29, 2019Publication date: July 25, 2019Applicant: Huawei Technologies Co., Ltd.Inventors: Yong JIANG, Jia Lv, Yuxiang Xiao
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Publication number: 20190158194Abstract: 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.Type: ApplicationFiled: January 29, 2019Publication date: May 23, 2019Inventors: Xiaoyi WANG, Sergey Nikolaevich DUDOROV, Penghuai LI, Yuxiang XIAO
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Publication number: 20190140605Abstract: 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.Type: ApplicationFiled: January 7, 2019Publication date: May 9, 2019Inventors: Yiwei Hong, Xianglin Li, Yuxiang Xiao
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Patent number: 9209753Abstract: 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.Type: GrantFiled: November 24, 2014Date of Patent: December 8, 2015Assignee: Huawei Technologies Co., Ltd.Inventors: Yuxiang Xiao, Erni Zhu, Anding Zhu
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Publication number: 20150078484Abstract: 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.Type: ApplicationFiled: November 24, 2014Publication date: March 19, 2015Inventors: Yuxiang Xiao, Erni Zhu, Anding Zhu