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说明：  BPSK原理仿真，采用的是相干解调和非相干解调(BPSK principle simulation, using coherent detection and non-coherent demodulation)

一种有效的模糊PID控制程序和一个反步控制程序 能够运行，非常好用(FUZZY ＰＩＤ　ｃｏｎｔｒｏｌ backstepping control)

人型辯識(內附測試圖)以及註解，請依各人需求去改(Human-type identification (with test pattern), and comments, please go to change according to individual needs)

把matlab当成一种编程语言来教，向学生展现如何编写简洁高效，有充分根据的程序。(To matlab as a programming language to teach, to show students how to write simple and efficient, well-founded procedures.)

matlab code for lag/lead compensater of dc motor

this is a matlab code for zooming image

说明：  FEA 有限元计算matlab很早以前编制的程序，适应新的matlab环境。(FEA finite element matlab long ago programmed to adapt to the new matlab environment.)

程序理论详见内附的pdf：《Hamilton图的充要条件及圈的矩阵算法》 主程序为 [K]=getPk(A,k) A表示图的邻接矩阵，k表示k阶长路和圈 返回K表示该图的所有k阶长路和圈 其他函数介绍： Ppro定义路的乘法 Psum定义路的加法 MatPro定义路矩阵的乘法 isaPorC判断是否为路或圈 P2subP提取路的和式中的所有路 getP1从邻接矩阵得到1阶路矩阵(get a k-path from a graph)

报道了在掺钛蓝宝石环形激光器中加入非线性折射率 n2较大的 SF-57玻璃形成腔内可控 的 SPM效应 ,并引入适当的负 GVD,将脉冲宽度从 30 fs压缩至 16 fs,相应的脉冲压缩率为 47 (Join the nonlinear refractive index n2 reported greater SF-57 titanium sapphire glass ring laser cavity formed in a controlled The SPM effect, and the introduction of a suitable and negative GVD, the pulse width 30 fs compressed to 16 fs, corresponding pulse compression rate of 47 )

PCA算法，用于估计大规模MIMO中的信道状态信息(The PCA is used to estimation MIMO channel)