5G宽带功放线性化平台开发与验证  

Development and Verification of 5G Broadband Power Amplifier Linearization Platform

作　　者：苗德华 解程杰 MIAO De-hua;XIE Cheng-jie(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315211,China)

机构地区：[1]宁波大学信息科学与工程学院,宁波315211

出　　处：《无线通信技术》2022年第1期6-10,共5页Wireless Communication Technology

基　　金：国家自然科学基金项目(U1809203,62071264)。

摘　　要：本文完成了基于5G宽带功放线性化平台的在线数字预失真模型测试和实时预失真器验证的功能开发,两种模式可以随时进行切换。该方案抛弃了传统的PC加仪器的测试方式,可在线高效的迭代测试。实时预失真器验证功能是在FPGA中加入一种实时数字预失真硬件结构。我们使用记忆多项式(MP)、分解向量旋转(DVR)和广义记忆多项式(GMP)模型进行在线数字预失真模型测试。提出并使用基于并行处理结构的MP模型进行预失真器验证。我们成功的将80MHz和100MHz的5GNR信号调制到4.9GHz功率放大器上并在该平台上实时线性化。In this paper,the online digital predistortion model test based on the linearization platform of 5G broadband amplifier and the functional development of real-time predistortion verification are completed,and the two modes can be switched at any time.This scheme abandons the traditional PC plus instrument testing method,can be online efficient iterative testing.Real-time pre-distortion verification is the addition of a real-time digital pre-distortion hardware structure to the FPGA.We used memory polynomial(MP),decomposition vector rotation(DVR),and broad memory polynomial(GMP)models for online digital pre-distortion model testing.The pre-distortion device verification is proposed and used using the MP model based on parallel processing structure.We successfully modulated 5GNR signal from 100MHz and 80MHz to a 4.9GHz power amplifier and linearized it in real time on the platform.

关 键 词：5G 数字预失器 数字预失真 线性化 功率放大器 FPGA 

分 类 号：TN914[电子电信—通信与信息系统]