数字电视发射机功放的预失真技术研究  

Study of Digital Predistortion for Power Amplifier in Digital TV Transmitter

作　　者：吴钢锋[1] 虞强[1] 沈海根[1] 

机构地区：[1]上海交通大学电磁场与微波教研室,上海200240

出　　处：《电视技术》2006年第6期23-26,共4页Video Engineering

摘　　要：介绍了一种可识别HPA记忆效应的数字预失真器的结构、特点,以Hammerstein预失真器为例仿真了可识别功放记忆效应的基带数字预失真器,并在数字电视发射机功放线性化中加以应用,结果表明记忆效应预失真结构应用在数字电视发射机功放的线性化中可以取得令人满意的效果。In this paper, the structure and character of Digital Predistortion （DPD） which can identify HPA with memory effects is introduced. Then the simulation of a Hammerstein DPD applied in a DTV transmitter HPA linearization is presented. It is verified that the application of memory DPD structure for power amplifiers in Digital TV transmitter can achieve a satisfied result.

关 键 词：数字预失真(DPD) 大功率功放 HAMMERSTEIN模型 记忆效应 两步优化分解(LS/SVD) 数字电视 

分 类 号：TN722.75[电子电信—电路与系统]