| | | | | 基于训练符号的OFDM系统同步过程研究 | | | 赵阳;肖志东 | | | OFDM是一种新的高效的多载波调制技术,能够有效地对抗多径传播;但是,OFDM系统对定时和频偏很敏感。对一种基于训练符号的OFDM系统定时同步和频率偏移同步算法进行了分析并通过MATLAB进行仿真实现。仿真结果表明该算法具有较好的同步精度。
【作者单位】：沈阳理工大学通信与网络工程中心 辽宁沈阳110168
【关键词】：训练符号;OFDM;定时同步;频率偏移同步
【分类号】：TN919.3
【DOI】：CNKI:SUN:ZXDB.0.2008-09-065
【正文快照】：
1引言正交频分复用(OFDM)作为一种多载波调制方式,其频偏会导致子信道间干扰(ICI),破坏子载波之间的正交性。同时,定时误差的存在也会造成系统解调的错误。因此在接收系统中,时频同步就是必须解决的问题。目前,实现同步的算法有两类,第一类是非数据辅助估计,即盲估计,基于O F D | | |  推荐 CAJ下载  PDF下载 | | | CAJViewer7.0阅读器支持所有CNKI文件格式，AdobeReader仅支持PDF格式 |
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