fir_com

直流潮流计算程序（作者FX）提供7种控制方式，导纳矩阵形成有部分问题，小弟只是想学习学习高手的源代码，代码冗杂请见谅(the code of DC—powerflow caculation by FX provide 7 kind of controll mode，but there are some problems in the formation of Y matrix.please let me download some code by good operator )

this is code for fuzzy c mean clustering

一个用于系统辨识的特殊输入信号，它由两部分组成，一部分是伪随机二位序列，一部分是随机序列。(A special input signals for system identification, which consists of two parts, part of the pseudo-random sequence of two, as part of a random sequence.)

说明：  改程序对C/A码的产生进行了仿真，运行结果显示了第四颗卫星产生的C/A码(Application to the C/A code generation are simulated, operation results show that the fourth satellite produce C/A code)

光纤布拉格光栅中，利用matlab编写介质分层模型，得到反射谱。(Fiber Bragg grating, using matlab preparation of medium layered model obtained reflection spectrum.)

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)

Script for computing the BER for BPSK modulation in a Rayleigh fading channel with equal gain combining

移动通信系统中的维特比编码器的实现程序代码。(The codes of Viterbi Coder for mobile communication.)

用于求解含有非线性油膜力的转子程序，使用MATLAB语言编写(Rotor program with nonlinear oil film force)

------名称：带交叉因子的改进PSO算法 ------功能：求解多维无约束优化问题 ------特点：收敛性强，还可以加入变异算子(------ Name: with cross-factor function to improve the PSO algorithm ------: Solving multi-dimensional unconstrained optimization problem ------ characteristics: strong convergence, mutation operator can also add son)