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通过锁相环的方法实现2fsk的传输系统的设计，，这是仿真图。。仅供参考(Achieved through the PLL 2fsk designed transmission system, which is the simulation of Fig. . For reference only.)

EMD工具箱，不仅包含源程序，而且有例子，适合初学者。(EMD toolbox)

this code realize the two dimention esprit algorithm

cc方法是实现相空间重构时用来计算重构维数和时间延迟的方法，我在这里只是试一试(ccmethod medisine and time delay we implement the program，the word is too leate to upload,so i have to add something to it.i can not do well in english.,)

设计一个AC/DC/AC变频器设计，具体参数如下：三相交流输入380V/50Hz，三相输出交流电压500V/400Hz,THD<5 ,负载为一般的阻感负载，功率5000W。(Design of a AC/DC/AC converter design, the specific parameters are as follows: Three-phase AC input 380V/50Hz, three-phase output AC voltage 500V/400Hz, THD < 5 , as a general resistive load inductive load, power 5000W.)

huffman coding of the bitstream

Once you input filter coeffiecient you can get frequency responce of filter and drawing that shows the position of pole, zero.

objct-c aop编程，使用Method Swizzling方法

step respons of system cotinus and disecret

李指数计算，该函数用来计算时间序列的最大Lyapunov 指数--Wolf 方法(Lee index calculation, the function is used to calculate the time series of the largest Lyapunov exponent- Wolf method)