Power amplifier linearization using memory polynomial predistorter with non-uniform delay taps
Power amplifier linearization using memory polynomial predistorter with non-uniform delay taps
复制标题
使用具有非均匀延迟抽头的记忆多项式预失真器进行功率放大器线性化
DOI：
10.1109/mwsym.2004.1338972
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
G. Kompa
中科院分区：
文献类型：
--
作者：
A. Ahmed;S.M. Endalkachew;G. Kompa
针对宽带功率放大器的预失真线性化问题，提出了一种新的非均匀延迟抽头记忆多项式。该方法主要研究非均匀时延对记忆多项式预失真器（MPPD）函数的影响。采用先进的设计系统（ADS/spl reg/）软件实现。仿真结果表明，该方法可以有效地降低具有记忆效应的宽带功率放大器的带内失真。由于使用了非均匀延迟抽头，新的预失真函数在抑制互调失真（IMD）方面有了很好的改善。
In this paper, a new memory polynomial with nonuniform delay taps is proposed for predistorter linearization of wideband power amplifiers. This method focuses on the effect of nonuniform time delays used in the memory polynomial predistorter (MPPD) functions. It is implemented using advanced design system (ADS/spl reg/) software. Simulation results show that the proposed method can effectively reduce in-band distortion for wideband power amplifiers (PA) that exhibit memory effects. Excellent improvement in intermodulation distortion (IMD) suppression by the new predistortion functions is shown to be due to the use of nonuniform delay taps.