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原版matlab bpsk信号的调制解调，可显示发送数据的波形，调制后的波形，接收波形，误码情况等(Original matlab bpsk signal modulation and demodulation, send data to display the waveform, the modulated waveform received waveform, error conditions, etc.)

设r是f(x) = 0的根，选取x0作为r初始近似值，过点（x0,f(x0)）做曲线y = f(x)的切线L，L的方程为y = f(x0)+f (x0)(x-x0)，求出L与x轴交点的横坐标 x1 = x0-f(x0)/f (x0)，称x1为r的一次近似值。过点（x1,f(x1)）做曲线y = f(x)的切线，并求该切线与x轴交点的横坐标 x2 = x1-f(x1)/f (x1)，称x2为r的二次近似值。重复以上过程，得r的近似值序列，其中x(n+1)=x(n)－f(x(n))/f (x(n))，称为r的n+1次近似值(Let r is f (x) = 0 root, select the initial approximation x0 as the r, over point (x0, f (x0)) to do the curve y = f (x) the tangent L, L the equation y = f ( x0)+ f ' (x0) (x-x0), find the intersection of L and the x-axis of abscissa x1 = x0-f (x0)/f' (x0), x1 is called an approximation r. Through points (x1, f (x1)) to do the curve y = f (x) the tangent, and find the intersection of the tangent with the x-axis of abscissa x2 = x1-f (x1)/f ' (x1), x2 is called r the second approximation. Repeat the process, get an approximation of the sequence r, where x (n+1) = x (n)-f (x (n))/f ' (x (n)), as an approximation of r n+1 times)

Abstract The study of digital signal processing normally concentrates on the design, realization, and application of single-input, single-output digital filters. There are applications, as in the case of spectrum analyzer, where it is desired to separate a signal into a set of sub-band signals occupying, usually nonoverlapping, portions of the original frequency band. In other applications, it may be desired to combine many such sub-band

说明：  单纯形法matlab程序，输入A,b,c，得到整个过程的单纯形表与最优解，最优值，每一步变换的单纯形表都有给出，完全没有错，很详细，有运行结果说明。(The simplex method matlab program, input A, B, C, get the simplex table and the optimal solution of the whole process, the optimal value, the simplex table of each step transformation are given, there is no error at all, very detailed, there are running results.)

this is power factor correction e-book

一个模仿ATM提款机的MFC程序，具有ATM的所有功能。(An imitation of the MFC process ATM teller machines, with all the features of ATM.)

用Matlab仿真直接序列扩频系统,M文件编译，附带PPT说明(Matlab simulation with direct sequence spread spectrum system, M files to compile, with notes PPT)

buck/boost双向DCDC变换电路，即可以进行降压也可升压，采用双闭环控制(buck/boost bi-directional DC DC converter circuit, both can also be buck boost, dual loop control)

TD-SCDMA小区搜索最为关键的sync-dl码同步的确定过程，即搜索DwPTS(TD-SCDMA cell search the most critical sync-dl Code Synchronization in the process of determining that the search DwPTS)

说明：  VAD matlab程序 常见于无声帧检测 语音信号处理(VAD matlab program is commonly used in silent frame detection speech signal processing)