符号定时，求得单个OFDM符号的开始和结束的精确时刻通过计算接收信号和已互参考的相关系数实现。

基于最小二乘法实现精确到采样点间的准确定时，性能远远高于双程测距方法实现的测距与定时。仿真表明此方法对于抗噪声和频偏具有很好的作用。代码联系我：wo.lmy@163.com-Based on least square method to achieve precise sampling points of accurate timing between, performance is much higher than the round trip distance method and timi