For integer frequency offset estimation, we analyze a sequenceauto-correlation based algorithm, and extend the algorithm into frequency selective channel case.
对于整数频偏估计，分析了一种基于序列自相关的算法，并将该算法推广应用到频率选择性信道中；
2
At the same time, the channel estimation error, caused by the spectral leakage of DFT, can be reduced by canceling the auto-correlation error of the time-domain sequence of frequency-domain pilots.
同时，通过消除频域导频时域序列的自相关误差，能有效降低由DFT谱泄漏导致的信道估计误差。
3
By the analysis of the corresponding theory, an image sequenceauto-sorting algorithm based on phase correlation and its optimized algorithm are given.