受到功放非线性特点的限制,直放站的效率大大降低.为提高直放站的输出效率,增加数字预失真功能提出了一种数字预失真直放站的设计方法,并给出了具体的实现方案.经仿真验证,算法简单可靠,可以较大地提高数字直放站的效率.
[1] 郝禄国, 余嘉池. 有记忆功放的数字基带预失真实现方案 [J]. 广东通信技术 2009.doi:10.3969/j.issn.1006-6403.2009.07.004
[2] Changsoo Eun, Powers E.J.. A new Volterra predistorter based on the indirect learning architecture [J]. IEEE Transactions on Signal Processing: A publication of the IEEE Signal Processing Society 1997, 1(1).
[3] SAFARI N, FEDORENKO P, KENNEY J S. Spline-based model for digita predistortion of wide-band signals for high power amplifier linearization [M]. IEEE/MTT-S International, Honolulu(檀香山) 2007.
[4] Dennis R. Morgan, Zhengxiang Ma, Jaehyeong Kim, Michael G. Zierdt, John Pastalan. A Generalized Memory Polynomial Model for Digital Predistortion of RF Power Amplifiers [J]. IEEE Transactions on Signal Processing: A publication of the IEEE Signal Processing Society 2006, 10(10).
[5] ZHOU D, DEBRUNNER V. A simplified adaptive nonlinear predistorter for high power amplifiers based on the direct learning algorithm [A]. Montreal, Canada 2004.
[6] BRAITHWAITE R N. Wide bandwidth adaptive digital predistortion of power amplifiers using reduced order memory correction [A]. Atlanta 2008.
