mathematica

说明：  bfsk调制，可出来图形，经过了awgn(bfsk modulation may be out of graphics, after awgn)

说明：  压缩包里包含了无约束优化问题常用的几种求解方法的源程序：变量轮换法（variable_rotation.m）、最速下降法（steepest_descent.m）、修正牛顿法（modified_newton.m）、共轭梯度法（conjugate_gradient.m）。另外，coefficient_matrix.m为目标函数系数获得矩阵，minval.m为最小值计算函数，gradient.m为梯度计算函数(Compression bag contains unconstrained optimization problems of several commonly used method of source: variable rotation Act (variable_rotation.m), steepest descent method (steepest_descent.m), as amended Newton (modified_newton.m), conjugate gradient method (conjugate_gradient.m). In addition, coefficient_matrix.m as the objective function coefficients obtained matrix, minval.m function for the minimum calculation, gradient.m for gradient calculation function)

to extract the feature

本软文件是copula的matlab说明和案例，是Word文档。(The soft file is the copula matlab description and case, is the Word document.)

采用L-M优化算法用以训练BP神经网络，使其能够拟合某一附加有白噪声的正弦样本数据。设计一个三层BP神经网络，其网络的隐含层神经元的激励函数为双曲正切型，输出层各神经元的激励函数为线性函数，隐含层有6个神经元(LM optimization algorithm used to train BP neural network to enable it to fit a white noise, sine additional sample data. Design a three BP neural network, its network of hidden layer neuron activation function of hyperbolic tangent type for the output layer activation function of each neuron is a linear function of the hidden layer has 6 neurons)

输入齿轮基本参数，绘制数字齿轮图形，并生成离散齿轮数据点坐标。(The basic parameters of the input gear, illustrated with digital gear graphics, and generate the coordinates of the discrete gear data points.)

viterbi simulation K = 7 in bpsk modulation, with soft decoding 2 bit

关于物理层网络编码编码和模拟网络编码ANC的matlab仿真代码。里面有四个程序，希望对大家有用(Matlab simulation code on the physical layer network coding and network coding ANC simulation. There are four procedures, we hope to be useful)

用蚁群算法做的人口疏散模型，用于消防疏散危机时的仿真系统(sxabxnjsxnxnl;smmskx)

用MATLAB和数值逼近方法实现费米函数的简捷计算(MATLAB and numerical approximation method for the simple calculation of the Fermi function)