一种基于单训练符号的OFDM联合同步新算法  

A New Time-frequency Joint Synchronization Algorithm Based on Single Training Symbol in OFDM System

作　　者：陈长兴[1] 巩林玉[1] 郑洪涛[1] 马涛[1] 

机构地区：[1]空军工程大学,陕西西安710051

出　　处：《现代电子技术》2010年第3期62-64,共3页Modern Electronics Technique

基　　金：国家863项目资助(2007AAJ129);陕西省电子信息综合集成重点实验室资助项目(200906B)

摘　　要：为保证OFDM信号的正确传输,必须保持其子载波之间的完全同步,否则将造成子载波间干扰(ICI)和符号间干扰(ISI),严重影响OFDM系统的性能。设计一种新的单训练符号结构,并给出了基于这种单训练符号的OFDM联合同步算法。通过仿真,对新算法和传统的Schmidl&Cox时频联合同步算法进行了比较。结果表明,采用新算法能够获得更好的同步精度。In order to ensure the OFDM signal＇s correct transmission, it must keep synchronization entirely between the send signals and receive signals; otherwise,the ICI and ISI can affect the OFDM system＇s performance seriously. A new structure of single training symbol and a new time - frequency joint synchronization algorithm are proposed. According to the simu- lation results, the new algorithm mentioned in this paper has better synchronization precision than the traditional Schmidl ＆ Cox algorithm.

关 键 词：OFDM 同步 单训练符号 载波间干扰 符号间干扰 

分 类 号：TN911[电子电信—通信与信息系统]