公开(公告)号：US06429740B1

公开(公告)日：2002-08-06

申请号：US09533571

申请日：2000-03-23

申请人： Tien M. Nguyen ,  James Yoh ,  Andrew S. Parker ,  Diana M. Johnson

发明人： Tien M. Nguyen ,  James Yoh ,  Andrew S. Parker ,  Diana M. Johnson

IPC分类号： H03F126

CPC分类号： H03F1/3241

摘要： A predistortion method uses an extended Saleh model for linearizing the output of nonlinear high power amplifiers having inherent amplitude modulation to amplitude modulation distortion, and inherent amplitude modulation to phase modulation distortion, during conversions of an input signal to an output signal. A complex baseband linearizer provides predistortion at baseband for reducing spectral regrowth and improves bit error performance. The predistortion effects are matched to the amplifier distortions to cancel out the distortions to provide linearized conversions. The extended Saleh model provides a general solution using selected coefficients matched to distortion effects of a particular amplifier.

摘要翻译： 预失真方法使用扩展的Saleh模型，用于在将输入信号转换为输出信号的过程中将具有固有幅度调制的非线性高功率放大器的输出线性化为幅度调制失真，以及固有幅度调制到相位调制失真。 复基带线性化电路在基带处提供预失真以减少频谱再生长并改善误码性能。 预失真效应与放大器失真匹配，以消除失真以提供线性化转换。 扩展的Saleh模型提供了使用与特定放大器的失真效应匹配的所选系数的一般解决方案。

公开(公告)号：US06307435B1

公开(公告)日：2001-10-23

申请号：US09534105

申请日：2000-03-23

申请人： Tien M. Nguyen ,  James Yoh ,  Andrew S. Parker ,  Diana M. Johnson

发明人： Tien M. Nguyen ,  James Yoh ,  Andrew S. Parker ,  Diana M. Johnson

IPC分类号： H03F126

CPC分类号： H03F1/3241

摘要： A predistortion method use a modified linear-log model for linearizing the output of nonlinear high power amplifiers having inherent amplitude modulation to amplitude modulation distortion, and inherent amplitude modulation to phase modulation distortion, during conversions of an input signal to an output signal. A complex baseband linearizer provides predistortion at baseband for reducing spectral regrowth and improves bit error performance. The predistortion effects are matched to the amplifier distortions to cancel out the distortions to provide linearized conversions. The modified linear-log model is used to reduce the clipping effects through the peak operating point for a specified output power loss with minimum distortion.

摘要翻译： 预失真方法使用修正的线性对数模型，用于在将输入信号转换为输出信号的过程中，将具有固有幅度调制的非线性高功率放大器的输出线性化为幅度调制失真，以及将固有的幅度调制转换为相位调制失真。 复基带线性化电路在基带处提供预失真以减少频谱再生长并改善误码性能。 预失真效应与放大器失真匹配，以消除失真以提供线性化转换。 经修改的线性对数模型用于通过峰值工作点减小对具有最小失真的指定输出功率损耗的削波效应。