公开(公告)号：US09509350B1

公开(公告)日：2016-11-29

申请号：US14736957

申请日：2015-06-11

Applicant: Infineon Technologies AG

Inventor： Thomas Magesacher ,  Peter Singerl ,  Martin Mataln ,  Christian Schuberth

IPC: H04L25/03 ,  H04B1/04

CPC classification number: H03F1/3247 ,  H03F1/3241 ,  H03F1/34 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/451 ,  H04B1/0475 ,  H04B2001/0425 ,  H04B2001/0433

Abstract: A non-linear pre-distortion engine maintaining constant peak power at its output is disclosed. The engine includes a compression estimator, a crest factor reduction processor, a digital pre-distorter and a power amplifier. The compression estimator is configured to generate a compression estimate based on an input signal and a feedback signal. The feedback signal is based on an RF output signal. The crest factor reduction processor is configured to reduce a crest factor of the input signal to generate a crest factor reduced signal based on the compression estimate. The digital pre-distorter is configured to apply a pre-distortion to the crest factor reduced signal after an initial phase and generate a pre-distorted signal based on pre-distortion parameters. The power amplifier is configured to amplify the pre-distorted signal to generate the RF output signal. The operation of the chain consisting of pre-distorter and power amplifier is substantially linear and the pre-distorter maintains constant peak power at its output, which eliminates unwanted avalanche or pre-distorter blow-up issues.

Abstract translation: 公开了在其输出端保持恒定峰值功率的非线性预失真引擎。 引擎包括压缩估计器，波峰因数降低处理器，数字预失真器和功率放大器。 压缩估计器被配置为基于输入信号和反馈信号产生压缩估计。 反馈信号基于RF输出信号。 波峰因数降低处理器被配置为降低输入信号的波峰因数，以基于压缩估计产生波峰因数降低信号。 数字预失真器被配置为在初始相位之后对波峰因数降低信号施加预失真，并且基于预失真参数产生预失真信号。 功率放大器被配置为放大预失真信号以产生RF输出信号。 由预失真器和功率放大器组成的链条的操作基本上是线性的，并且预失真器在其输出端保持恒定的峰值功率，这消除了不必要的雪崩或预失真器爆炸问题。

公开(公告)号：US20150130549A1

公开(公告)日：2015-05-14

申请号：US14079923

申请日：2013-11-14

Applicant: Infineon Technologies AG

Inventor： David Seebacher ,  Peter Singerl ,  Christian Schuberth ,  Martin Mataln

IPC: H03K7/08

CPC classification number: H03K7/08

Abstract: A method for providing cross point information includes: providing an input signal having amplitude and phase information; interpolating between a first point of the input signal and a second point of the input signal to provide cross point information between the first point and the second point; and providing a pulse-width modulated signal based on the input signal and the cross point information.

Abstract translation: 提供交叉点信息的方法包括：提供具有振幅和相位信息的输入信号; 在所述输入信号的第一点和所述输入信号的第二点之间进行内插以在所述第一点和所述第二点之间提供交叉点信息; 以及基于输入信号和交叉点信息提供脉冲宽度调制信号。