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1. 发明授权

US6072364A Adaptive digital predistortion for power amplifiers with real time modeling of memoryless complex gains 失效
标题翻译：功率放大器的自适应数字预失真与无记忆复合增益的实时建模
公开(公告)号：US6072364A
公开(公告)日：2000-06-06
申请号：US877479
申请日：1997-06-17
申请人： Ernesto G. Jeckeln , Fadhel M. Ghannouchi , Mohamad A. Sawan
发明人： Ernesto G. Jeckeln , Fadhel M. Ghannouchi , Mohamad A. Sawan
IPC分类号： H03F1/32 , H03F1/26
CPC分类号： H03F1/3247 , H03F1/3288 , H03F2201/3233
摘要： In an adaptive method and device for predistorting a signal to be transmitted, supplied by a signal source to an input of a power amplifier having a output for delivering an amplified output signal, the following steps are conducted: predistorting the signal to be transmitted by means of cascaded predistortion amplitude and phase look-up tables interposed between the signal source and the input of the power amplifier, producing a first feedback signal in response to the predistorted signal, producing a second feedback signal in response to the amplified output signal from the power amplifier, delaying the first feedback signal for eliminating any time lag between the first and second feedback signals, and real time modeling the predistortion amplitude and phase look-up tables in response to the first and second feedback signals in order to update these two tables. The position of the delay circuit (delaying step), that permits the use of the real time modeling procedure, eliminates the convergence time and the requirement for any iterative algorithms.
摘要翻译：在用于将要发送的信号预失真的自适应方法和装置中，由信号源提供给具有用于传送放大的输出信号的输出的功率放大器的输入端，执行以下步骤：通过装置预失真发送的信号插入信号源和功率放大器的输入之间的级联预失真振幅和相位查找表，响应于预失真信号产生第一反馈信号，响应于来自功率的放大的输出信号产生第二反馈信号放大器，延迟第一反馈信号以消除第一和第二反馈信号之间的任何时间滞后，以及响应于第一和第二反馈信号对预失真幅度和相位查找表进行实时建模以更新这两个表。允许使用实时建模程序的延迟电路（延迟步骤）的位置消除了收敛时间和任何迭代算法的需求。

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