程序包含调制解调两部分，需结合optisystem软件运行，是基于数据反馈的相位噪声估计算法，适用于光OFDM系统。(The program consists of two parts, modulation and demodulation. It needs to run in conjunction with optisystem software. It is a phase noise estimation algorithm based on data feedback, and it is suitable for optical OFDM system.)