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    • 3. 发明申请
    • RF TRANSMITTER, INTEGRATED CIRCUIT DEVICE, WIRELESS COMMUNICATION UNIT AND METHOD THEREFOR
    • RF发射机,集成电路设备,无线通信单元及其方法
    • US20120269291A1
    • 2012-10-25
    • US13298282
    • 2011-11-16
    • Hua WangChao LuJulia LiuChun-Hsien PengSang Won SonPaul Cheng Po Liang
    • Hua WangChao LuJulia LiuChun-Hsien PengSang Won SonPaul Cheng Po Liang
    • H04L25/49
    • H04L27/367H03F1/3241H04B1/0475H04B2001/0425
    • A radio frequency (RF) transmitter has at least one digital signal processing module and at least one power amplifier module. The digital signal processing module includes at least one digital pre-distortion component arranged to receive at least one complex input signal, perform two-dimensional non-uniform mapping of the complex input signal to a first, in-phase, digital pre-distortion control word and a further, quadrature, digital pre-distortion control word, and output the in-phase and quadrature pre-distortion digital control words. The power amplifier module includes a first, in-phase, array of switch-mode power cells and at least one further, quadrature, array of switch-mode power cells. The two-dimensional non-uniform mapping has a pre-distortion profile at least partly based on an input/output relationship for the power amplifier module arranged to generate an analogue RF signal based at least partly on the in-phase and quadrature digital pre-distortion control words.
    • 射频(RF)发射机具有至少一个数字信号处理模块和至少一个功率放大器模块。 数字信号处理模块包括至少一个数字预失真分量,被布置成接收至少一个复合输入信号,执行复合输入信号到第一同相数字预失真控制的二维不均匀映射 字和另一个正交数字预失真控制字,并输出同相和正交预失真数字控制字。 功率放大器模块包括开关模式功率单元的第一同相阵列和至少一个另外的正交阵列的开关模式功率单元。 所述二维非均匀映射至少部分地基于用于功率放大器模块的输入/输出关系的预失真曲线,所述功率放大器模块被布置为至少部分地基于同相和正交数字预处理器生成模拟RF信号, 失真控制字。