基于FPGA技术实现的OFDM基带调制系统  

Based on FPGA Achieve OFDM Baseband Modulation System

作　　者：殷严刚[1] 王小华[1] 何富运[1] 

机构地区：[1]广西师范大学电子工程学院,广西桂林541004

出　　处：《电子器件》2014年第1期89-91,共3页Chinese Journal of Electron Devices

基　　金：科技人员服务企业行动项目(2009GJE10006)

摘　　要：OFDM基带调制的目的是将高速的串行数据流转换成并行的低速数据流,再调制到频谱是正交重叠的子载波上进行传输,以便于提高频谱利用率。OFDM可以采用IFFT/FFT实现调制解调,在本设计中采用FPGA技术可以比较容易地实现OFDM通信系统的的调制器部分。整个系统包括RS编码、交织、QAM星座映射,IFFT和插入CP等模块,经过仿真验证:提高了系统的处理速度,具有较高的应用价值。The target of OFDM is high-speed serial data stream into low-speed parallel data streams,and modulation spectrum is to transmit the orthogonal subcarriers overlap,so the spectrum utilization rate is advanced. And OFDM can be used to achieve IFFT/FFT modulation and demodulation,realized easily by FPGA technology. The design is based on FPGA technology to realize the modulator part of OFDM communication system, which includes RS coding,interleaving,constellation mapping,QAM,IFFT and inserted into the CP module. The speed of system can be improved and it has higher application value by the simulation.

关 键 词：正交频分复用 现场可编程门阵列 频谱 QAM星座映射 

分 类 号：TN76[电子电信—电路与系统]