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.
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)
