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1.分别在两个图中画出δ(n)和δ(n-2)，其中-10≤n≤10，画出U（n）其中-10≤n≤10。 2.分别在两个图中画出x1(n)=cos(2π×20×0.01×n)，0≤n≤10和x2(n)=(0.8)n，1≤n≤6。 3.由上一题，计算y(n)=x1(n)+x2(n)，并画图。(1. Draw the figure at two δ (n) and δ (n-2), where-10 ≤ n ≤ 10, draw the U (n) where-10 ≤ n ≤ 10. 2. Respectively in the two Draw the figure x1 (n) = cos (2π × 20 × 0.01 × n), 0 ≤ n ≤ 10 and x2 (n) = (0.8) n, 1 ≤ n ≤ 6. 3. from the previous question, calculate y (n) = x1 (n)+ x2 (n), and drawing.)

实现粒子群算法，里面有代码，大家可以放心的使用，里面程序是可以用的 。(fgfggfg)

三相 逆变 仿真 pwm 50Hz 380V 工业控制(Three-phase inverter simulation PWM 50 Hz ac 380 V industrial control )

刘金坤智能控制与应用这本书的课后MATLAB程序源代码(Liujin Kun intelligent control and application of this book' s after-school program MATLAB source code)

以3*3为模板在一幅灰度图像中寻找像素值大于给定阈值的所有点(To 3* 3 as the template to look at a gray image pixel value is greater than a given threshold for all points)

用matlab算术码编码译码 效果一般压缩比例1:2(Arithmetic code encoding decoding)

Color Image Enhancement Techniques: A Critical Review Abstract Image enhancement is one of the key issues in high quality pictures such as digital camera and HDTV. Since Image clarity is very easily affected by lighting, weather, or equipment that has been used to capture the image. These conditions lead to image may suffer from loss of information. As a result, many techniques have developed known as image Enhancement techniques to recover the information in an image. This paper presents a literature review on some of the image Enhancement techniques for color image enhancement like, Contrast Stretching, Histogram Equalization and its improvement versions, Homomorphic Filtering, Retinex, and Wavelet Multiscale Transform. Comparison of all the techniques concludes the better approach for its future research

经典粒子群算法的matlab实现。用函数进行测试实验，并给出算法寻优迭代的效果图(Classical PSO algorithm matlab. Experiments with test functions, and gives an iterative optimization algorithm renderings)

matlab实现各种滤波包括巴特沃思、切比雪夫或椭圆滤波器设计数字滤波器(Matlab finishes all kinds of filter including bart wirth, chebyshev or elliptic filter design digital filter )

正交相移键控 (Quadrature Phase Shift Keying)简称“QPSK”，是一种数字调制方式。它分为绝对相移和相对相移两种。由于绝对相移方式存在相位模糊问题，所以在实际中主要采用相对移相方式DQPSK。目前已经广泛应用于无线通信中，成为现代通信中一种十分重要的调制解调方式。(QPSK THAT IS TO SAY....)