说明：  在本实验中，我们主要在Matlab平台上实现非对称性限幅光正交频分复用（ACO-OFDM）信号的发送与接收的仿真与分析。通过这场实验，我们能够更加掌握ACO-OFDM信号原理及信号的特点，并掌握ACO-OFDM发送与接收调制解调原理及信号经过信道后的恢复方法。实验步骤主要如下：首先，Matlab产生16QAM映射方式的正交频分复用（OFDM）符号，然后在产生ACO-OFDM信号；在每个ACO-OFDM符号前添加循环前缀，然后编写ACO-OFDM信号发送接收程序；信道使用高斯白噪声（AWGN）信道；Matlab绘出时域ACO-OFDM信号，均衡后的接收信号的星座图。
(In this experiment, we mainly realize the simulation and analysis of the transmission and reception of asymmetric amplitude-limited optical orthogonal frequency division multiplexing (ACO-OFDM) signal on the platform of matlab. Through this experiment, we can grasp the principle of ACO-OFDM signal and the characteristics of the signal, as well as the principle of ACO-OFDM sending and receiving modulation and demodulation and the method of signal recovery after passing through the channel. The experimental steps are as follows: Firstly, matlab generates 16QAM mapping orthogonal frequency division multiplexing (OFDM) symbols, and then generates ACO-OFDM signals; adds a cyclic prefix to each ACO-OFDM symbol, and then writes the ACO-OFDM signal transmission and reception program; the channel uses the Gauss white noise (AWGN) channel; and MATLAB draws the constellation of ACO-OFDM signals in time domain, after equalization, the received signal.)