一种流形学习算法（很好用），有循环检测，周期性检测，有较好的参考价值，给出接收信号眼图及系统仿真误码率，外文资料里面的源代码，利用自然梯度算法。- A fluid manifold learning algorithm (good use), There are cycle detection, periodic testing, There are good reference value, The received signal is given eye and BER simulation systems, Foreign materials inside the source code, Use of natural gradient algorithm.