Constellation-introduce

北邮一个老师的讲义，还有作业和实验，是学习matlab和数学建模的辅导材料(Beijing University of Posts and Telecommunications a teacher' s lecture notes, there are operations and experiments, and mathematical modeling to learn matlab counseling materials)

Modelling of electrical transmission line

说明：  在网上下载的好用的傅里叶变换程序 时域变频域信号分析(Fourier transform program)

testing advanced encryption system in matlab with multiple .m file already tested and well working under any of mathlab versions new or older.

该算法利用卡尔曼滤波技术实现惯性导航与GPS组合导航(The algorithm uses the Kalman filtering technique to achieve inertial navigation and GPS Navigation)

说明：  采用粗糙集理论实现连续数据的离散化,对理解数据的离散化有很大帮助(Using rough set theory to realize continuous data discretization)

Matlab学习资料，包括MATLAB基础教程、matlab实用教程、精通Matlab6[1].5(张志涌)等(Matlab learning materials, including MATLAB Basics Tutorial, matlab practical course, master Matlab6 [1] .5 (Zhang Yong), etc.)

传统的宽带信号中抑制正弦干扰的方法是采用陷波器(notch filter),为此需要精确知道干扰正弦的频率.然而当干扰正弦频率是缓慢变化时,且选频率特性要求十分尖锐时,则最好采用自适应噪声抵消的方法.下图是用一个二阶FIR的LMS自适应滤波器消除正弦干扰的一个方案。该代码实现了以下功能： 1) 借助MATLAB画出了滤波器的误差性能曲面和误差性能曲面的等值曲线； 2） 给出了最陡下降法以及LMS算法的计算公式； 3） 用MATLAB产生了方差为0.05, 均值为0白噪音S(n)，并画出某次采样得到的波形； 4） 根据 2）中的公式，并利用 3）中产生的S(n)，在 1）中的误差性能曲面的等值曲线上叠加画出了采用最陡下降法以及LMS法时H(n)的在叠代过程中的轨迹曲线； 5）用MATLAB计算并画出了LMS法时误差随时间n的变化曲线（对应S(n)的某一次的一次实现）和e(n)波形； 6）在 1）中的误差性能曲面的等值曲线上，叠加画出采用LMS法得到的100次实验中的H(n)的平均值的轨迹曲线； 7）最终对结果进行了分析，具体见压缩包的word文档。 (Wideband signal in the conventional sinusoidal interference suppression method is the use notch filter (notch filter), this requires precise knowledge of the frequency of a sinusoidal interference . However, when the interference frequency sinusoidal changes slowly , and the selected frequency characteristic requirements are very sharp , then best use of adaptive noise cancellation method . following figure is a second-order FIR LMS adaptive filter to eliminate a program sinusoidal interference . The code implements the following functions:   A ) draw with MATLAB error performance of the filter surface and the surface contour error performance curve 2 ) gives the steepest descent method and the LMS algorithm formula 3 ) generated using MATLAB variance of 0.05 with a mean of 0 white noise S (n), and draw a particular sampling waveform 4 ) based on 2 ) of the formula , and use 3 ) generated in S (n), in a ) the error performance curves superimposed on the surface contour pl)

说明：  单向感应电动机的仿真模型，内有7个仿真文件。具体实现功能和仿真结果图文件夹里有一个PPT文件进行讲解。(One-way induction motor simulation models, there are seven simulation files. Concrete realization of functional and simulation results map folder there is a PPT file to explain.)

计算LTE物理层中Turbo码的误码率，该模块能应用于整个系统链路级仿真(Calculate the the Turbo code error rate in the LTE physical layer, the module can be applied to the link-level simulation of the entire system)