无线射频通信中改进式功放数字预失真技术  

RFID Digital Baseband Pre-distortion for Rapp Nonlinear Power Amplifier Based on Look-Up-Table Technology

作　　者：刘宗明[1] 谈熙[1] 闵昊[1] 

机构地区：[1]复旦大学专用集成电路与系统国家重点实验室,上海201203

出　　处：《复旦学报（自然科学版）》2010年第1期126-131,共6页Journal of Fudan University：Natural Science

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA04A101)

摘　　要：提出了一种用于无线射频通信系统中补偿由于高功率放大器引起的非线性失真的改进式的基带查找表预失真方法.查找表预失真方法是基于对高功率放大器的非线性特性进行训练,由训练得到的功放非线性参数对功放进行线性化校正,以达到预失真补偿的效果.由计算机仿真结果和实测结果表明,该方法具有稳定性高、收敛速度快、补偿算法简单、硬件开销较少、补偿效果较好等优点.A digital baseband improved pre-distortion for Rapp nonlinear power amplifier based on look-up-table is proposed to compensate the nonlinearity caused by High Power Amplifier. LUT based pre-distortion technology can compensate HPA＇s nonlinearity by training its nonlinearity character and performing its inverse convert of the HPA＇s nonlinearity based on the LUT table. Both the computer simulation and the real hardware testing result shows that the method algorithm performs stable, converges fast with simple algorithm less hardware but high nonlinear compensation effects.

关 键 词：RFID 高功率放大器 数字基带预失真 查找表 ACP 

分 类 号：TN45[电子电信—微电子学与固体电子学]