摘要
同步是正交频分复用系统的关键问题之一,文章主要研究了基于循环前缀的最大似然(ML)同步算法,及基于训练序列的符号定时同步算法,并进行了算法仿真。仿真结果表明,与ML算法相比,该算法大大提高了系统的同步性能,尤其是在多径信道中的性能得到了很大提高。
Synchronization is a key problem for orthogonal frequency division multiplexing（OFDM） system. First, the ML（maximum likelihood, symbol synchronization algorithm based on cyclic prefix is analyzed. And then the symbol synchronization algorithm based on training frame is presented. Results of simulation and analysis show that, in comparison with ML algorithm it is of better synchronization performance, and its performance is considerably raised especially in multipath channels.
出处
《信息安全与通信保密》
2008年第6期53-55,共3页
Information Security and Communications Privacy
