基于数字记忆的预失真

S. McBeath, D. Pinckley
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引用次数: 4

摘要

提出了一种基于记忆型功放模型的预失真算法。在PA测量系统上对该算法进行了测试。预失真技术基于滤波抽头延迟线(TDL)模型。无记忆预失真技术也展示了基于记忆的预失真方法的优点。无记忆预失真可将三阶IM降低5- 8db,而基于记忆的预失真可将三阶IM降低18- 20db。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Digital memory-based predistortion
A predistortion algorithm based on a memory-based power amplifier model (PA) is presented. The algorithm was tested using a PA measurement system. The predistortion techniques are based on the filtered tapped delay line (TDL) model. Memoryless predistortion techniques are also presented to show the benefits of the memory-based predistortion approach. Memoryless predistortion reduces third order IM by 5-8 dB, while memory-based predistortion reduces third order IM by 18-20 dB.
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