中文说明：
此代码产生一个16QAM信号，通过高斯白噪声信道后，对其使用常模盲均衡算法，最后输出星座图和收敛图。
English Description：
This code generates a 16QAM signal, passes through the Gaussian white noise channel, uses the constant modulus blind equalization algorithm for it, and finally outputs the constellation diagram and convergence diagram.