说明：  无循环前缀下的OFDM（正交频分复用）信号的点目标仿真程序，可以通过修改参数加入CP，解决串扰问题。
(The point target simulation program of OFDM (orthogonal frequency division multiplexing) signal without cyclic prefix can solve the crosstalk problem by modifying the parameters and adding CP.)