acoustic

超宽带高斯噪声的计算2，与其他的几个共用(Ultra-Wideband Gaussian noise calculation 2, and some other common)

直角坐标下的潮流计算，适合电力系统分析学习(Cartesian coordinates of the flow calculation for power system analysis study)

matlab 认知无线电中功率分配程序仿真(Power Allocation in Cognitive Radio matlab program)

1,、设置变量和参量： 　　X(n)为输入向量，或称为训练样本 　　W(n)为权值向量 　　e(n)为偏差 　　d(n)为期望输出 　　y(n)为实际输出 　　η为学习速率 　　n为迭代次数 　　2、初始化，赋给w(0)各一个较小的随机非零值，令n=0 　　3、对于一组输入样本x(n)和对应的期望输出d，计算 　　e(n)=d(n)-X^T(n)W(n) 　　W(n+1)=W(n)+ηX(n)e(n) 　　4、判断是否满足条件，若满足算法结束，若否n增加1，转入第3步继续执行(, set the variables and parameters: X (n) is the input vector, otherwise known as the training sample W (n) for the weight vector e (n) for the deviation d (n) is the desired output y (n) is the actual output η is the learning rate n is the number of iterations)

原信号分解成IMF后，用此脚本来计算此IMF的瞬时频率(After the original signal into IMF, use this script to calculate the instantaneous frequency of the IMF)

说明：  光纤LP模式,光纤模式计算，纤芯模式，有效折射率(Fiber LP mode, fiber mode calculation, fiber core mode, effective refractive index)

DQPSk调制过程 解调过程 系统误码率 matlab程序(Modulation process DQPSk BER demodulation matlab process procedures)

太阳能光伏阵列的Matlab/Simulink模型(Matlab/Simulink model for solar array)

用于计算表面等离子体共振中常用的金属膜层的介电常数值(Surface plasmon resonance is used to calculate the metal film layer is commonly used in the dielectric constant)

利用SVM做回归线性测试。对于大盘指数的有效预测可以从整体上观测股市的变化提供强有力的信息，所以对上证指数的预测很有意义。通过对上证指数从1990.12.20-2009.08.19每日的开盘数进行回归分析，最终拟合的结果是：均方误差MSE=2.35705 e-005，平方相关系数 R=99.9195 。SVM的拟合结果还是比较理想的。(Make use of SVM linear regression testing. For the market index can predict the observed changes in the stock market as a whole to provide a strong information, so it makes sense to predict the Shanghai index. Through the Shanghai Composite Index opened daily from 1990.12.20-2009.08.19 number of regression analysis, the results of the final fit are: mean square error MSE = 2.35705 e-005, the square of the correlation coefficient R = 99.9195 . SVM fitting result is quite satisfactory.)