Double_LooP

本文借助于矩阵对的标准相关分解(CCD)技术,给出了问题P的通解表示 并且得到了矩阵方程有解的一个充要条件. (THE LEAST-SQUARE SOLUTIONS OF A MATRIX EQUATION )

ofdm算法的源代码程序，可以帮助解决ofdm问题(ofdm algorithm source code procedures, which can help to solve the problem ofdm)

solution of multivariable non linear equation by LU decomposition method

实验一：三次样条插值（P56，例6） 一、实验目的： 1) 掌握三次样条插值的运用 2) 了解拉格朗日插值在高次上的误差 二、实验环境：Matlab6.5 三、实验内容： 1) 给定函数f(x)=1/(1+x2)，-5<=x<=5，节点xk=-5+k，(k=0,1,2…10)，用三次样条插值求S10(x)，S10’(-5)=f’(-5)，S10’(5)=f’(5)。 2）作原函数f(x)，拉格朗日插值函数Ln(x)，三次样条差值函数Sn(x)。画出三个函数的图像，比较它们的区别。 (Experiment I: cubic spline interpolation (P56, cases of 6) First, the experiment was: 1) cubic spline interpolation to master the use of 2) understanding of Lagrange interpolation in high-error second, experimental environment: Matlab6 .5 c, experimental elements: 1) a given function f (x) = 1/(1+ x2),-5 <= x <= 5, node xk =- 5+ k, (k = 0,1,2 ... 10), using cubic spline interpolation for S10 (x), S10 (-5) = f (-5), S10 (5) = f (5). 2) for the original function f (x), the Lagrange interpolation function Ln (x), cubic spline difference function Sn (x). Draw the three functions of images, compare the difference between them.)

factor of 32, with acceptable quality.What are the principles behind compression?A common characteristic of most images is that the neighboring pixels are correlated and therefore contain redundant information. The foremost task then is to find less correlated representation of the image. Two fundamental components of compression are redundancy and irrelevancy reduction. Redundancy

z和s的映射：使用MATLAB 7.0系统编程M文件求z和s的映射。(z and s mapping: Using MATLAB 7.0-system programming of M documents seeking mapping z, s.)

MATLAB工具建立的DS-CDMA 扩频通信模型 (MATLAB tools to create a DS-CDMA spread spectrum communication model)

说明：  MATLAB函数及命令全集-(按字母排序)(MATLAB functions and commands Collection- (in alphabetical order))

Bloch simulator. [mx,my,mz] = bloch(b1,gr,tp,t1,t2,df,dp,mode,mx,my,mz) Bloch simulation of rotations due to B1, gradient and off-resonance, including relaxation effects. At each time point, the rotation matrix and decay matrix are calculated. Simulation can simulate the steady-state if the sequence is applied repeatedly, or the magnetization starting at m0. INPUT: b1 = (Mx1) RF pulse in G. Can be complex. gr = (Mx1,2,or 3) 1,2 or 3-dimensional gradient in G/cm. tp = (Mx1) time duration of each b1 and gr point, in seconds, or 1x1 time step if constant for all points

经典用遗传算法解决TSP问题，主函数用于解决我国31个省份的旅行商问题。(Classic genetic algorithm to solve TSP, the main function is used to solve the traveling salesman problem of China' s 31 provinces.)