Apparatus for compensating for distortion of transmitter array in radio communication system and method for controlling the same
    18.
    发明授权
    Apparatus for compensating for distortion of transmitter array in radio communication system and method for controlling the same 有权
    用于补偿无线通信系统中发射机阵列失真的装置及其控制方法

    公开(公告)号:US09065396B2

    公开(公告)日:2015-06-23

    申请号:US13726901

    申请日:2012-12-26

    Abstract: Provided is a method in which a Digital Pre-Distorter (DPD) performs digital pre-distortion on a received In-phase (I) signal, a received Quadrature-phase (Q) signal, a feedback I signal, and a feedback Q signal; a mixer mixes a signal output from the DPD with a frequency signal output from an oscillator; each of n phase shifters phase-shifts a signal output from the mixer according to a preset beamforming pattern; each of n Power Amplifiers (PAs) amplifies a signal output from an associated phase shifter according to a gain, the PAs connected to the associated phase shifter on a one-to-one basis; each of n envelope detectors detects an envelope signal from a signal output from an associated PA, the envelope detector connected to the associated PA on a one-to-one basis; and a control unit determines whether the n PAs operate normally, using the envelope signals output from the n envelope detectors.

    Abstract translation: 提供了一种数字预失真器(DPD)对接收到的同相(I)信号,接收的正交相(Q)信号,反馈I信号和反馈Q信号进行数字预失真的方法 ; 混频器将从DPD输出的信号与从振荡器输出的频率信号混合; 每个n个移相器根据预设的波束形成模式将从混频器输出的信号相移; n个功率放大器(PA)中的每一个根据增益放大来自相关移相器的信号,一对一连接到相关联的移相器的PA; n个包络检测器中的每一个检测从相关联的PA输出的信号的包络信号,包络检测器以一对一的方式连接到相关联的PA; 并且控制单元使用从n个包络检测器输出的包络信号确定n个PA是否正常工作。

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