首页期刊简介编委会投稿启事审稿流程读者订阅广告服务联系我们English
引用本文
  •    [点击复制]
  •    [点击复制]
【打印本页】 【下载PDF全文】 查看/发表评论下载PDF阅读器关闭

←前一篇|后一篇→

过刊浏览    高级检索

本文已被:浏览 244次   下载 0 本文二维码信息
码上扫一扫!
一种通用的OFDM发射机设计
张羽丰,熊蔚明,王竹刚,史毅龙,李炯卉
0
(中国科学院 国家空间科学中心复杂航天系统电子信息技术重点实验室,北京 101400;2.中国科学院大学,北京 101400)
摘要:
正交频分复用(OFDM)系统参数众多,设计灵活,可以根据不同用途、信道环境以及接收机的性能等,设计出很多不同的OFDM系统。针对此问题,提出了一种通用的基于训练序列的OFDM发射机设计方案。从性能的角度出发,设计了OFDM符号结构和传输帧结构,并重点分析了OFDM数字基带调制模块的组成,最终在Xilinx开发板上实现了该方案,并获得了OFDM各模块的仿真时序图、OFDM射频信号频谱和误比特率图。研究结果表明,该方案频谱利用率高,复杂度低,通用性好。
关键词:  正交频分复用  发射机设计  训练序列  数字基带调制器
DOI:
基金项目:
A universal design of OFDM transmitters
ZHANG Yufeng,XIONG Weiming,WANG Zhugang,SHI Yilong,LI Jionghui
(1.Key Laboratory of Electronics and Information Technology for Space Systems National Space Science Center,Chinese Academy of Sciences,Beijing 101400,China;2.University of Chinese Academy of Sciences,Beijing 101400,China)
Abstract:
The Orthogonal Frequency Division Multiplexing(OFDM) system can be designed flexibly because of its variety of parameters.According to different applications,environment of channels and the performance of receivers,it can be designed differently.To deal with this problem,a universal design of OFDM transmitter based on training sequence is proposed.The structure of OFDM symbols and transmission frames are designed from the view of performance.The composition of OFDM digital baseband modulator is emphasized.Finally,the scheme is realized by Xilinx development board.And the sequence diagram of each module,the signal spectrum and the bit error rate(BER) are obtained.Research shows that this scheme has the advantage of high spectral efficiency,low complexity and good versatility.
Key words:  OFDM  transmitter design  training sequence  digital baseband modulator
安全联盟站长平台