5G系统中功率放大器的减少反馈MIMO数字预失真

2017 Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop (INMMiC) Pub Date : 2017-04-01 DOI:10.1109/INMMIC.2017.7927318

T. Gotthans, Roman Maršáek, J. Gotthans, M. Hoflehner

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引用次数: 2

摘要

本文提出了一种降低多功率放大器数字预失真复杂度的方法。考虑到MIMO系统中放大器的相似特性，这种减小基于只使用一个反馈路径。在一定的理论基础上，本文给出了实验结果，试图给出在有限(极端情况下只有一个)反馈路径的情况下是否可以使用预失真的答案。由于其极低的带外发射，滤波器组多载波信号作为后ofdm波形的典型代表被用作测试信号。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Reduced-feedback MIMO digital predistortion of power amplifiers for 5G systems

In this paper we present a reduced complexity digital predistortion of multiple power amplifiers. The reduction is based on using only one feedback path taking into account the similar characteristics of amplifiers in the MIMO system. After some theoretical basics, the paper presents the results of the experiment trying to give an answer whether the predistortion can be used with limited (in extreme case with only one) number of feedback paths. Due to its very low out-of-band emissions, the filter-bank-multicarrier signal has been used as a test signal as a typical representative of post-OFDM waveforms.

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2017 Integrated Nonlinear Microwave and Millimetre-wave Circuits Workshop (INMMiC)

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