摘要
在放大器功率增益对预失真线性化性能的影响问题的研究中,线性化技术需要更大的线性工作区域和更高的线性化性能。为提高变压器的性能,提出一种新的预失真算法优化方法,调整预失真器的应用模式,通过衰减输出功率增益扩展线性工作区域,并能实现较好的线性化性能。实验验证了上述优化方法的有效性。合理选择实际输出功率增益,利用增益衰减优化预失真算法,可以增大预失真放大器的线性工作区域,提升变压器的线性化性能。改进的优化方法为预失真技术的研究和应用提供了科学依据。
In the study of the effects of amplifier power gain on predistortion linearization performance, linearization technique needs more linear work area and higher linearization performance. To improve the performance of the transformer, this article proposes a new optimization method of predistortion algorithm. It adjusts the application model of predistortion, decreases output power gain to extend linear working region and thus achieves a better linearization performance. The simulation resuhs prove the effectiveness of the proposed method, which selects a reasonable output power gain, optimizes the algorithm with gain-degradation. The method can extend the linear working region of predistortion amplifier and enhance the performance of the amplifier. The improved optimization method can serve as the scientific basis for the research and application of predistortion technology.
出处
《计算机仿真》
CSCD
北大核心
2014年第11期167-170,174,共5页
Computer Simulation
基金
福建省教育厅科技项目(JA12271)
福建省教育厅科技项目(JA12264)
福建省自然科学基金项目(2011J05155)
关键词
增益衰减
预失真
功率回退
性能优化
Gain degradation
Predistortion
Power back-off
Performance optimization
