数字自适应预失真在移动无线设备中的应用

2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium Pub Date : 2007-06-03 DOI:10.1109/RFIC.2007.380875

G. Norris, J. Staudinger, Jau-Horng Chen, C. Rey, P. Pratt, R. Sherman, H. Fraz

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引用次数: 19

摘要

将低功率自适应预失真(APD)技术应用于移动设备的非线性射频功率放大器。该系统可将频谱再生产物降低10-20 dB，并将调制精度提高2-6倍。使用APD可以将3g PA电源电流降低2倍，并提供高达8:1的负载不匹配抗扰度。

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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Application of Digital Adaptive Pre-distortion to Mobile Wireless Devices

Low power adaptive pre-distortion (APD) techniques are applied to nonlinear RF power amplifiers for mobile devices. An APD system is demonstrated which reduces spectral regrowth products by 10-20 dB and increases modulation accuracy by 2-6X. The use of APD allows a reduction in 3 G PA supply current by 2X and provides immunity to load mismatches as high as 8:1.

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2007 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium

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