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    METHOD FOR DETERMINING CALIBRATION PARAMETER OF ZERO INTERMEDIATE FREQUENCY RADIO RECEIVER, AND ZERO INTERMEDIATE FREQUENCY RADIO RECEIVER
    2.
    发明公开
    METHOD FOR DETERMINING CALIBRATION PARAMETER OF ZERO INTERMEDIATE FREQUENCY RADIO RECEIVER, AND ZERO INTERMEDIATE FREQUENCY RADIO RECEIVER 审中-公开

    公开(公告)号：EP3764549A1

    公开(公告)日：2021-01-13

    申请号：EP20152988.0

    申请日：2015-12-17

    申请人： Huawei Technologies Co. Ltd.

    发明人： ZHANG, Lie ,  BAI, Jianxiong ,  LI, Meifeng ,  LI, Qiang

    IPC分类号： H04B1/00 ,  H04L27/38

    摘要： Embodiments of the present invention provide a method for determining a calibration parameter of a zero intermediate frequency radio receiver, and a zero intermediate frequency radio receiver. The method includes: obtaining a plurality of sub-band training signals, where a sum of the plurality of sub-band training signals is a fullband training signal; determining a sub-band calibration parameter corresponding to each of the plurality of sub-band training signals; determining a fullband calibration signal according to the plurality of sub-band training signals and the sub-band calibration parameter corresponding to each of the plurality of sub-band training signals; and performing coefficient fitting on the fullband training signal and the fullband calibration signal, to determine a fullband calibration parameter. Because sub-band calibration parameters are obtained according to a plurality of different sub-band training signals, aliasing between an image signal and a training signal can be reduced. Therefore, a speed and precision of determining a calibration parameter can be improved.

    ZERO-IF RADIO RECEIVER CALIBRATION PARAMETER DETERMINATION METHOD AND ZERO-IF WIRELESS RECEIVER
    3.
    发明公开
    ZERO-IF RADIO RECEIVER CALIBRATION PARAMETER DETERMINATION METHOD AND ZERO-IF WIRELESS RECEIVER 审中-公开

    公开(公告)号：EP3379783A1

    公开(公告)日：2018-09-26

    申请号：EP15910524.6

    申请日：2015-12-17

    申请人： Huawei Technologies Co., Ltd.

    发明人： ZHANG, Lie ,  BAI, Jianxiong ,  LI, Meifeng ,  LI, Qiang

    IPC分类号： H04L25/03

    CPC分类号： H04B17/21 ,  H04B1/0071 ,  H04L25/03 ,  H04L27/38

    摘要： Embodiments of the present invention provide a method for determining a calibration parameter of a zero intermediate frequency radio receiver, and a zero intermediate frequency radio receiver. The method includes: obtaining a plurality of sub-band training signals, where a sum of the plurality of sub-band training signals is a fullband training signal; determining a sub-band calibration parameter corresponding to each of the plurality of sub-band training signals; determining a fullband calibration signal according to the plurality of sub-band training signals and the sub-band calibration parameter corresponding to each of the plurality of sub-band training signals; and performing coefficient fitting on the fullband training signal and the fullband calibration signal, to determine a fullband calibration parameter. Because sub-band calibration parameters are obtained according to a plurality of different sub-band training signals, aliasing between an image signal and a training signal can be reduced. Therefore, a speed and precision of determining a calibration parameter can be improved.