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介绍matlab数值计算的ppt，详细介绍了matlab中所使用的各种概率、统计函数(Matlab numerical introduction ppt, detailed matlab used in a variety of probability, statistics function)

说明：  《变结构控制与MATLAB仿真》书中第二章例四的变结构控制程序( Variable Structure Control and MATLAB Simulation chapter book, four cases of variable structure control procedures)

先去取两区四机系统的潮流，然后通过设置求取不同情况的下的暂态程序，并得出波形(To go to take the trend of the two four-machine system, and then strike a transient program under different circumstances, and draw the waveform by setting)

OFDM的QPSK调制与解调,有说明，有需要的朋友可以看看(OFDM QPSK modulation and demodulation, a note, a friend in need can look)

二阶椭圆偏微分方程的差分算法，适用于求解矩形区域，任意边界条件。(elliptic partial differential equation algorithm applied to solving rectangular region, arbitrary boundary conditions.)

可以进行信道估计,准确得到信道的冲激响应，比普通的LS算法性能较好。(evaluate the pulse response of channal)

bisection method - use a root in polynomial or function / iterative method

power_twelvepulses.rar,功率电子领域matlab仿真文件，已经验证过，程序运行正常(power_twelvepulses.rar,Power electronics field matlab simulation file, has already been verified, the normal operating procedures)

无线通信中对多种基本调制方式在三种不同信道下的差错概率仿真(Wireless communication modulation of the plurality of basic channels on three different simulation error probability)

说明：  此代码为计算离散随机变量的熵、联合熵、条件熵、互信息的 Matlab 程序(This code is a matlab program for calculating entropy, joint entropy, conditional entropy and mutual information of discrete random variables)