LFSR1

ldpc码在在twoto矩阵，即时间控制，频率两个参数变量的系统内仿真，matlab7.0编译通过。(LDPC code in twoto matrix, namely the time control, the frequency of the two parameters of the system simulation variables, matlab7.0 compiled through.)

在瑞利通道下，连续相位调制信号多用户检测(In the Rayleigh channel, the continuous phase modulated signal multi-user detection)

系统辨识的matlab仿真，该方法的辨识过程使用了粒子群算法，计算迅速准确。(Matlab simulation of system identification, the identification of the method using particle swarm optimization algorithm to calculate quickly and accurately.)

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：  高斯坐标正反算数学模型 对于初学者来说很实用(Positive and negative Gaussian coordinate calculation model is useful)

Domain steganography

用matlab画出所需要的图形，并且用所画的图形互相进行腐蚀和膨胀操作(Using matlab to draw the required graphics, painting and graphics with each other by corrosion and expansion of operations carried out)

rocket source code matlab code

用于绘制SUI信道模型，内含参数设置程序和通过FWGN生成衰落信道的程序。(SUI channel model for drawing, containing the parameter settings and programs to generate fading channel by FWGN.)

说明：  时域sinc插值算法，例如：输入是采样于200sps的15Hz正弦信号。使用时域sinc插值将其重采样到400sps(Sinc interpolation algorithm in time domain)