现代电子技术2025，Vol.48Issue(5)：30-35,6.DOI:10.16652/j.issn.1004-373x.2025.05.005
无额外新增反馈链路的远端数字预失真技术研究
Research on remote digital predistortion technology without additional new feedback links
摘要
Abstract
Power amplifiers play a key role in the field of wireless radio frequency(RF)communication technology.As typical nonlinear devices,they are always faced with the contradiction between linearity and efficiency.How to balance the linearity and efficiency has been a hot topic in academia and industry.Thanks to its simple structure,high efficiency and convenient adjustment,the digital predistortion technology has become the main solution to solve the nonlinear problem of power amplifiers.However,the performance and cost problems caused by the newly added feedback channel at the transmitting end have always been difficult to solve.Especially in remote communication,the resources are consumed severely by the newly added feedback channel.This paper introduces a new digital predistortion method applicable to remote communication.In this method,the coefficient calculation module is moved to the receiving end,so that the coefficient calculation and distortion correction are separated at the transceiver end,thereby avoiding rebuilding the feedback loop at the transmitting end.Theoretically,this method does not affect the performance,but saves the system cost.It has been verified by Simulink that,in the memory power amplifier model,the new method reduces the system cost and improves the linearization effect at the same time.In addition,all of the performance indicators of the new method have reached or exceeded expectations.关键词
数字预失真/无线通信技术/反馈链路/线性化/功率放大器/远端通信Key words
digital predistortion/wireless communication technology/feedback link/linearization/power amplifier/remote communication分类
电子信息工程引用本文复制引用
叶笑平,付钱华,杨万里..无额外新增反馈链路的远端数字预失真技术研究[J].现代电子技术,2025,48(5):30-35,6.基金项目
西华大学重点科研基金资助项目(Z201105) （Z201105）
