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    Method and system for compensating for doubly selective channel and related apparatus
    1.
    发明授权
    Method and system for compensating for doubly selective channel and related apparatus 有权

    公开(公告)号：US10104666B2

    公开(公告)日：2018-10-16

    申请号：US15369462

    申请日：2016-12-05

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Xuejun Sha ,  Yong Li ,  Lin Mei ,  Hongqiang Bao

    IPC: H04W72/04 ,  H04B1/7105 ,  H04L5/00 ,  H04W24/02 ,  H04L1/06

    Abstract: A method and system for compensating for a doubly selective channel, and a related apparatus are applied to the field of communications technologies. In embodiments of the present invention, a receive end obtains, based on a minimum mean square error between a transmit pilot sequence and a receive pilot sequence, an optimal parameter used in a process of channel compensation and signal modulation, that is, a modulation order and a channel compensation parameter such as a channel compensation matrix. Therefore, according to the embodiments of the present invention, an optimization method is used to apply a banded equalization channel compensation method and a partial FFT transform to a communications system, thereby improving system performance.

    Remote radio unit and a central unit for a base transceiver station
    4.
    发明授权
    Remote radio unit and a central unit for a base transceiver station 有权

    公开(公告)号：US11271651B2

    公开(公告)日：2022-03-08

    申请号：US17105304

    申请日：2020-11-25

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Hongqiang Bao ,  Ganghua Yang ,  Zhipeng Zhao ,  Huijian Zhang ,  Ramin Khayatzadeh

    IPC: H04B10/2575 ,  H04B10/58 ,  H04W88/08 ,  H04B10/40

    Abstract: A remote radio unit is for a base transceiver station. The remote radio unit includes: a noise generator configured to provide a RF noise signal having predefined statistical properties; a communication interface configured to transmit the RF noise signal as a stimulus signal over a radio-over-fiber uplink channel between the remote radio unit and a central unit of the base transceiver station for determining a pre-distortion of a target signal to be transmitted by the remote radio unit. The communication interface is further configured to receive the pre-distorted target signal over a ROF downlink channel between the remote radio unit and the central unit of the base transceiver station. The remote radio unit also has an antenna for transmitting the pre-distorted target signal received by the communication interface.

    Wireless Transceiver
    5.
    发明申请
    Wireless Transceiver 有权
    无线收发器

    公开(公告)号：US20160156375A1

    公开(公告)日：2016-06-02

    申请号：US15014851

    申请日：2016-02-03

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ganghua Yang ,  Hongqiang Bao

    IPC: H04B1/04 ,  H04L27/36

    CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H04B1/0007 ,  H04B1/04 ,  H04B2001/0425 ,  H04L27/368

    Abstract: Embodiments of the present disclosure disclose a wireless transceiver. The wireless transceiver includes a second control switch, and the second control switch may selectively connect a signal output end of a coupler or a signal output end of a low noise amplifier LNA to a signal input end of the down converter. Therefore, when the signal output end of the coupler is connected to the down converter, the coupler, the down converter, and the analog-to-digital converter ADC form an observer; when the second control switch connects the signal output end of the low noise amplifier LNA to the signal input end of the down converter, a transceiver antenna, the low noise amplifier LNA, the down converter, and the analog-to-digital converter ADC form a receiver. Therefore, the embodiments of the present disclosure can greatly save hardware costs of a system for implementing an observer circuit.

    Abstract translation: 本公开的实施例公开无线收发器。 无线收发器包括第二控制开关，并且第二控制开关可选择性地将耦合器的信号输出端或低噪声放大器LNA的信号输出端连接到下变频器的信号输入端。 因此，当耦合器的信号输出端连接到下变频器时，耦合器，下变频器和模数转换器ADC形成观察器; 当第二控制开关将低噪声放大器LNA的信号输出端连接到下变频器的信号输入端时，收发天线，低噪声放大器LNA，下变频器和模数转换器ADC形式 接收器 因此，本公开的实施例可以大大地节省用于实现观察器电路的系统的硬件成本。

    Wireless transceiver
    8.
    发明授权
    Wireless transceiver 有权

    公开(公告)号：US09762268B2

    公开(公告)日：2017-09-12

    申请号：US15014851

    申请日：2016-02-03

    Applicant: Huawei Technologies Co., Ltd.

    Inventor： Ganghua Yang ,  Hongqiang Bao

    IPC: H04L25/49 ,  H04B1/04 ,  H04B1/00 ,  H04L27/36

    CPC classification number: H04B1/0475 ,  H03F1/3241 ,  H04B1/0007 ,  H04B1/04 ,  H04B2001/0425 ,  H04L27/368

    Abstract: Embodiments of the present disclosure disclose a wireless transceiver. The wireless transceiver includes a second control switch, and the second control switch may selectively connect a signal output end of a coupler or a signal output end of a low noise amplifier LNA to a signal input end of the down converter. Therefore, when the signal output end of the coupler is connected to the down converter, the coupler, the down converter, and the analog-to-digital converter ADC form an observer; when the second control switch connects the signal output end of the low noise amplifier LNA to the signal input end of the down converter, a transceiver antenna, the low noise amplifier LNA, the down converter, and the analog-to-digital converter ADC form a receiver. Therefore, the embodiments of the present disclosure can greatly save hardware costs of a system for implementing an observer circuit.

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