计算机工程Issue(10)：118-121,4.DOI:10.3969/j.issn.1000-3428.2014.10.023
基于SOPC的数字预失真器设计与实现
Design and Implementation of Digital Predistorter Based on SOPC
摘要
Abstract
At present, the study of the Digital Predistortion ( DPD ) mainly focuses on the simulation of different algorithms,and the specific implementation technology research is less. A kind of adaptive digital predistortion device based on System on a Programmable Chip( SOPC) is proposed in this paper,the design adopts polynomial lookup table circuit to achieve the predistortion, and uses EDK project complete coefficient calculation. This method avoids the complexity brought by the whole hardware implementation,can satisfy the requirements of the adaptive function,and has the very strong practical value. Finally it downloads the design to Xilinx FPGA,and tests it in a test platform. Results show that the predistorter can effectively improve the linearity of the power amplifier. For the OFDM signal of 8 MHz bandwidth and the doherty GaN amplifier, ACPR can improve 8 dB and with the adaptive function, it can be a good application to the actual working environment.关键词
功率放大器/数字预失真/可编程片上系统/现场可编程门阵列/线性化/自适应Key words
power amplifier/Digital Predistortion ( DPD )/System on a Programmable Chip ( SOPC )/Field Programmable Gate Array( FPGA)/linearization/adaptation分类
信息技术与安全科学引用本文复制引用
苏攀,张以涛,杨红官,李艳超..基于SOPC的数字预失真器设计与实现[J].计算机工程,2014,(10):118-121,4.基金项目
湖南省科技计划基金资助项目(2012GK3151)。 （2012GK3151）
