摘要
功放是通信发射机中重要组成部分,随着无线通信发展,对功放的线性和效率要求越来越高。在众多功放线性化技术中,数字预失真技术是比较有发展潜力的技术。该文介绍了数字预失真概念和原理,通过测量功放的输入和输出信号后,导入仿真软件SystemVue中对功放的传输函数和预失真模型进行提取,并用于功放预失真仿真系统验证,得到的预失真模型可用于实际功放预失真系统建立。
A power amplifier(PA)is a key part in a transmitter.With the development of wireless communication,PAs request more and more on the linearization and efficiency.Among all the PA linearization techniques,digital pre-distortion(DPD)is a much more potential technology.In this letter,we introduced the concepts and principles of DPD.After measuring the input and output signals of a PA,we imported the data into SystemVue.The transmission function of the PA and the DPD model were extracted,and were used to verify the PA DPD system in simulation.The acquired DPD model can be applied in real PA DPD system.
作者
孔良
何瑜
Kong Liang;He Yu(The 10^th Research Institute of China Electronics Technology Group Corporation,Sichuan Chengdu 610036)
出处
《电子质量》
2019年第12期18-21,26,共5页
Electronics Quality
关键词
数字预失真
功放
线性化
Digital Pre-distortion
Power Amplifier
Linearization
