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公开(公告)号：US12057883B2
公开(公告)日：2024-08-06
申请号：US17942278
申请日：2022-09-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yibo Lv , Xu Li , Tianxiang Wang , Weiwei Zhang , Rongdao Yu
IPC: H04B10/50 , H04B10/2543 , H04B10/2575 , H04J14/02 , H04B10/07 , H04B10/2507
CPC classification number: H04B10/25752 , H04B10/2543 , H04J14/0227 , H04B10/07 , H04B10/2507 , H04B10/2575 , H04B10/50 , H04B10/5057
Abstract: A radio over fiber (RoF) system and a nonlinear compensation method, where the RoF system includes a BBU and an RRU, the RRU includes an electrical component, and the BBU includes a downlink and a feedback link. A predistortion module and an optical component are disposed on the downlink, an input end of the feedback link is connected to an output end of the optical component, and the feedback link is configured to feed back, to the predistortion module, a nonlinear signal output by the optical component. The RoF system further includes a temperature detection module configured to detect a temperature value of the electrical component, and transmit the temperature value to the predistortion module. The predistortion module is configured to perform digital predistortion DPD on a baseband signal based on the temperature value and the nonlinear signal.
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公开(公告)号：US20240313824A1
公开(公告)日：2024-09-19
申请号：US18675134
申请日：2024-05-27
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xu Li , Peihao Chen , Yibo Lv , Rui Ni , Ganghua Yang , Juntao Wu
CPC classification number: H04B3/02 , H01Q13/203
Abstract: Embodiments of this application provide a leaky coaxial cable and a communication system. The leaky cable includes: an inner conductor, an insulation layer, and an outer conductor, where the insulation layer is configured to separate the inner conductor from the outer conductor; and the outer conductor includes M perforated segments and N non-perforated segments, the M perforated segments and the N non-perforated segments are alternately arranged, at least one of the M perforated segments includes at least three leak holes, spacings between leak holes in each of the at least one perforated segment are the same, and M and N are positive integers greater than or equal to 1.
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公开(公告)号：US20230261758A1
公开(公告)日：2023-08-17
申请号：US18307641
申请日：2023-04-26
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Weiwei Zhang , Xu Li , Tianxiang Wang , Yibo Lv , Dongyu Geng , Bofang Zheng
Abstract: A signal receiving apparatus and method are provided. When a baseband signal is restored, an orthogonal polarization state of light does not need to be precisely controlled. This is easy to implement and can reduce system costs. The apparatus includes an optical splitter configured to split a first polarization multiplexing optical signal into at least two second polarization multiplexing optical signals, and input the two second polarization multiplexing optical signals into at least two optical signal processing modules. An optical signal processing module is configured to couple the second polarization multiplexing optical signal, and input a coupled optical signal to a photoelectric detector configured to convert the coupled optical signal into an analog signal. An analog-to-digital converter is configured to convert the analog signal into a digital signal, and input the digital signal to a digital signal processor configured to process the digital signal to obtain a baseband signal.
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Patent Agency Ranking
公开(公告)号：US20250048323A1
公开(公告)日：2025-02-06
申请号：US18920453
申请日：2024-10-18
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ganghua Yang , Xu Li , Yibo Lv , Rui Ni , Yanchun Li
IPC: H04W64/00
Abstract: A first device receives a first signal sent by a second device, receives a second signal sent by a third device, and determines a first length based on first time, second time, and delay duration. The first time is time at which the first device receives the first signal. The second time is time at which the first device receives the second signal. The first length is a distance from an intersection point of a first straight line on which a terminal device is located and a first transmission line between a first network device and a second network device to the second network device, and the first straight line is perpendicular to the first transmission line.
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公开(公告)号：US20230163847A1
公开(公告)日：2023-05-25
申请号：US18158762
申请日：2023-01-24
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Yibo Lv , Xu Li , Junping Zhang
IPC: H04B10/11
CPC classification number: H04B10/11
Abstract: This application provides information transmission methods and apparatuses. In an implementation, a method comprising determining a data packet, wherein the data packet comprises a first information sequence and a second information sequence, the first information sequence comprises source information, the second information sequence comprises partial source information of the source information for performing luminance control on a light source, and outputting the data packet by using the light source.
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公开(公告)号：US20230006741A1
公开(公告)日：2023-01-05
申请号：US17942278
申请日：2022-09-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yibo Lv , Xu Li , Tianxiang Wang , Weiwei Zhang , Rongdao Yu
IPC: H04B10/2575 , H04B10/2543 , H04J14/02
Abstract: A radio over fiber (RoF) system and a nonlinear compensation method, where the RoF system includes a BBU and an RRU, the RRU includes an electrical component, and the BBU includes a downlink and a feedback link. A predistortion module and an optical component are disposed on the downlink, an input end of the feedback link is connected to an output end of the optical component, and the feedback link is configured to feed back, to the predistortion module, a nonlinear signal output by the optical component. The RoF system further includes a temperature detection module configured to detect a temperature value of the electrical component, and transmit the temperature value to the predistortion module. The predistortion module is configured to perform digital predistortion DPD on a baseband signal based on the temperature value and the nonlinear signal.
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公开(公告)号：US11239870B2
公开(公告)日：2022-02-01
申请号：US17321287
申请日：2021-05-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yibo Lv , Xu Li , Guangjian Wang , Jingjing Huang
IPC: H04B1/04 , H04B7/06 , H04B7/0413
Abstract: This application relates to the field of communications technologies and discloses a transmitter device and a signal processing method. m transmit antenna groups of the transmitter are configured to send m training signals under control of the processor. A target feedback antenna of the transmitter is configured to receive, under control of the processor, a first mixed signal obtained by superimposing the m training signals in space, where a phase difference between the first mixed signal and a second mixed signal obtained by superimposing in space the m training signals received by a receiver device falls within a preset range. A processor of the transmitter is configured to: perform DPD parameter estimation and pre-distortion processing on a to-be-sent signal. The m transmit antenna groups are further configured to send, under control of the processor, the to-be-sent signal on which pre-distortion processing has been performed.
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公开(公告)号：US20210273667A1
公开(公告)日：2021-09-02
申请号：US17321287
申请日：2021-05-14
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yibo Lv , Xu Li , Guangjian Wang , Jingjing Huang
Abstract: This application relates to the field of communications technologies and discloses a transmitter device and a signal processing method. m transmit antenna groups of the transmitter are configured to send m training signals under control of the processor. A target feedback antenna of the transmitter is configured to receive, under control of the processor, a first mixed signal obtained by superimposing the m training signals in space, where a phase difference between the first mixed signal and a second mixed signal obtained by superimposing in space the m training signals received by a receiver device falls within a preset range. A processor of the transmitter is configured to: perform DPD parameter estimation and pre-distortion processing on a to-be-sent signal. The m transmit antenna groups are further configured to send, under control of the processor, the to-be-sent signal on which pre-distortion processing has been performed.
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