Fischer-algorithm

题目：有1、2、3、4个数字，能组成多少个互不相同且无重复数字的三位数？都是多少？(Title: There are 1,2,3,4 digits, how many can be formed from each other and without duplication of the three-digit numbers? How many are?)

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)

递推最小二乘法的matlab程序，亲测可出图(recursive least squares)

THIS FILE CONTAINS IMPORTANCE OF IMAGE PROCESSING

OFDM,802.11的残余相位补偿算法，用于分析非理想同步的情况(OFDM, 802.11 residual phase compensation algorithm, is used to analyze the situation of non-ideal synchronization)

人脸检测，根据人脸肤色的特征，检测出人脸的轮廓的matlab代码(Face detection matlab code)

matlab学习资料，对于初学者来说是一本不错的入门教程(matlab learning materials, for beginners is a good introductory tutorial)

matlab中LMI工具箱gevp的详细用法(matlab LMI toolbox gevp detailed usage)

生成导频信号，并利用导频进行信道估计，利用两种方法分别进行信道估计，两种方法并进行了比较。(Generating a pilot signal, and using pilot channel estimation)

Function that calculate the PSNR and WSNR of two imagines