说明：  分别就正交频分复用OFDM的串并转换、编码、ifft变换、插入循环前缀和后缀、加窗及逆变换等进行仿真分析。
(Respectively orthogonal frequency division multiplexing (OFDM) and the string conversion, encoding, ifft transform, cyclic prefix and suffix insertion, the inverse transform, windowed and simulation analysis.)