基于马尔科夫算法的车辆行驶工况构建

Visualization of BER for STBC ystem with MRC receiver

本课件对Matlab初学者是个不错的中文教程，详细介绍了Matlab文件操作、运算基础、程序设计，绘图功能，数值计算，数据处理方法与多项式，符号计算及图形界面设计。(The courseware Matlab is a good Chinese language beginners tutorial, detailing the Matlab file operations, basic computing, programming, graphics, numerical calculation, data processing method and polynomials, symbolic computation and graphical design.)

说明：  对信号进行zak变换，计算速度快结果准确，开发环境为matlab(Zak transform the signal to calculate speed and accurate results, the development environment for matlab)

多径多普勒信道模型，包括快衰落，慢衰落，频率选择性衰落，平坦衰落等(Doppler multipath channel model, including fast fading, slow fading, frequency selective fading, flat fading, etc.)

（7，4）系统循环码编码器 code_out = cyclic_coder(code_in) 该系统循环码编码器的生成多项式是g(x) = x^3 + x + 1 输入参数code_in是信息码字，是1×4的行向量；输出code_out是编码后的系统 循环码字，是1×7的行向量。 函数运行时，同时画出输入信息码字和循环码字的波形图。( (7,4) cyclic code system Encoder code_out = cyclic_coder (code_in) cyclic code encoder of the system generating polynomial is g (x) = x ^ 3+ x+ 1 of information input parameters code_in code word is 1 × 4 row vector output code_out System is encoded codeword cycle, the row is 1 × 7 vector. Function to run at the same time draw the input code word and code word cycle waveform.)

数字图像处理matlab实现，包括如下程序： 1.直方图规定化为高斯双峰函数 2.窗口形状自适应（十字形或矩形）的中值滤波 3.彩色图像目标提取并与背景图像合成 4.插值外推法的彩色图像饱和度调整 5.多种插值方法实现的图像放大和缩小 6.频域变换及分析 7.几何校正 8.插值外推法的黑白图像对比度增强 9.运动模糊矫正(Digital image processing matlab realize, including the following procedures: (1) the bimodal histogram specification as a function of two Gaussian shape adaptive window (cross or rectangular) median filtering three color image with the background object extraction and image synthesis 4. Color image interpolation extrapolation saturation adjustment 5. various interpolation methods to achieve images zoom in and out 6. frequency domain transformation and analysis 7. geometric correction 8. interpolation extrapolation of the black and white image contrast enhancement 9. motion blur correction)

可以对信号进行短时傅里叶变换，也可以对反射系数序列进行短时傅里叶变换(STFT)

给出了用于图像分割的基于2D-OTSU算法的MATLAB代码，效果良好。(PCNN code for image segmentation based on OTSU)

matlab fir chebshev LPF

复morlet小波识别模态参数（阻尼和频率）的算例(Modal parameter identification combined Morlet wavelets (damping and frequency) examples)