真空电子技术Issue(3)：1-5,5.
一种新的并联两箱功率放大器模型
A Novel Parallel Two-box Model for Power Amplifier
摘要
Abstract
This paper presents a novel parallel two-box model for power amplifier (PA) by replacing envelope memory polynomial (EMP) model with simplified cross items between memory times (CIMT) model in hybrid MP-EMP(HME)model.Because the EMP considers only the effects of signals between current times and memory times and without the cross items between memory times,and so it cannot describes the memory effect of the PA fully.The proposed model obtains better results with low complexity at the same order of nonlinearity and memory depth.When the nonlinearity order is 3 and the memory depth is 2,the number of coefficients of the proposed model is 16.67％ less than that of the HME model,while the normalized mean square error (NMSE) is improved to 1.13 dB.When applied to digital predistortion,the adjacent channel power ratio (ACPR) of it is18.63％ higher than that of the HME model,which greatly enhance the power amplifier performance and predistortion effects.关键词
功率放大器/预失真/记忆多项式/记忆交叉项Key words
Power amplifier/Predistortion/Memory polynomial/Cross items between memory times分类
信息技术与安全科学引用本文复制引用
虞崇志,尚新文,胡波雄,王刚,苏小保..一种新的并联两箱功率放大器模型[J].真空电子技术,2017,(3):1-5,5.基金项目
国家重大专项(20128X01007004001) （20128X01007004001）
国家自然科学基金项目(61401427) （61401427）
