QPSK

说明：  MATLAB 干系结构计算程序时候matlab有限元计算新手学习(MATLAB computation program stakeholders when novice learning finite element matlab)

该链路仿真了OFDM系统在克服瑞丽多径衰落的影响中性能，并使用了理想信道估计。(The link of the OFDM system simulation Ruili in overcoming the effects of multipath fading in the performance and the use of an ideal channel estimation.)

matlab中图像卷积和自相关函数的演示和解释，这两个函数在使用时有很多技巧需要注意。(demonstrated and explained matlab image convolution and autocorrelation function, these two functions have a lot of skills in the use of note.)

MATLAB 牛顿下山法的一个小程序，原理就不详细说了。因牛顿迭代法受初值选取的限制，为防止迭代发散，对迭代过程再附加一项要求:|f(x(k+1))|<|f(x(k))|,将牛顿法迭代的结果:x(k+1) =x(k)-f(x(k))/f (x(k))和前一近似值x(k)适当加权平均做为新的改进值:x(k+1)=u*x(k+1) +(1-u)*x(k),其中u(0<> 迭代时u取1开始，逐次减半计算，直至附加要求符合为止。实例计算中x(k)=x(0)不变，只更新u和x(k+1)，直至:|f(x(k+1))|<|f(x(k))|（即|f(x(1))|<|f(x(0))|)，然后更新下山因子为u=1,继续以牛顿法迭代。(MATLAB Newton-down a small program, the principle is not explained in detail. Newton iteration by the initial value of the selected limit, in order to prevent additional iterative divergence, the iterative process a request: | f (x (k+1)) | < | f (x (k)) | Newton iteration Results: x (k+1) ' = X (k)-f (x (k))/f' (x (k)) and a previous approximation x (k), appropriately weighted average as a new improved value: x (k+1 ) = u* x (k+1) ' + (1-u)* x (k), where u (0 < u> iteration take successive calculated at 50 until the additional requirements found so far. examples of calculation of X ( k) = x (0) unchanged profile u and x (k+1, hungry) until: | f (x (k+1)) | < | f (x (k)) | (i.e. | f (x (1)) | < | f (x (0)) |), then profile downhill factor for u = 1, to continue to Newton iteration.)

说明：  利用matlab来实现求振动振型和固有频率。(Seeking to achieve vibration and natural frequency of vibration.)

基于小波的纹理分析及其在FPC金面缺陷检测中的应用(Wavelet-based texture analysis and its application in FPC gold surface defect detection)

实现数字基带系统的调制，主要包含2ask、4ask以及2fsk、2psk等，以及其图形化的界面显示(Digital base-band system modulation, mainly contains 2ask, 4ask and 2fsk, 2psk, as well as the graphical interface display)

这是我自己用MATLAB编的一个扫雷小游戏,程序比较经典,希望和大家一起分享.(This is for my own use MATLAB series of the game a small mine, the procedure is classic, want to share with everyone.)

产生L=31的gold序列，又两个移位寄存器输出的模2相加产生。(L = 31 generated sequences of gold, but also two shift registers generate the sum of the output mode 2.)

Filter Design in Matlab