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最速下降法优化，无约束，可以自己改进。很容易懂有简单的说明。(Steepest descent method optimization, non-binding, can improve. There is a simple easy to understand explanation.)

add noise matlab code

MATLAB simulation of group velocity dispersion in an optical fiber

说明：  怎么在函数中加入高斯噪声，白噪声，比较它们的性质，并求它们的相关性(how to insert gaosi noise,white noise and then how to konw their correlation)

该程序是自己编写的，是基于matlab的多径信道的建立。该多径信道是基于电力线信道特性而构建的，其中的衰落系数是通过阅读大量文献而得到的。该程序能够顺利运行，并画出了信道的各个参数图。(The program is written by myself,which is to build a multi-path channel matlab based. The multi-path channel is based on the characteristics of the power line channel constructed, which is fading coefficients obtained by reading a lot of literature. The program can run smoothly, and draw a diagram of each parameter channel.)

说明：  继续上次传的简单遗传算法，本次加入啦总体部分。(Continue to the last mass of the simple genetic algorithm, this time adding a whole part of you.)

The whole decoding process has been implemented natively on MATLAB. I need help in streamlining it so that it can run real-time. top level module is decoder.m. It takes in as input parameter the file name or file path and returns the decoded data & sampling frequency.

说明：  基于PID控制的永磁同步直线电机速度控制系统，输出速度能够较好的跟踪输入信号，控制效果比较理想(The speed control system of permanent magnet synchronous linear motor based on PID control can track the input signal better, and the control effect is ideal.)

盲信号分离的源信号模型，要更好的了解和利用时间序列的内在时间结构和复杂特性，通常可以采用相应的数学模型区近似描述各种类型的数据，该程序采用泛化自回归模型来产生盲源信号(Blind signal separation of the source signal model, we must better understand and leverage the structure of time series Neizai He Fuzatexing time can generally be adopted similar to the corresponding mathematical model Ou Miaoshu type of data, Gai Chengxu using generalized regression models to blind signal generated)

声波方程的正演程序，注释非常清晰，并且可以显示正演波场快照。(Acoustic wave equation forward procedure, comments are very clear, and can display the forward wave field snapshot.)