radix4FFT

小波变换的matlab源程序，有两个版本，这是第二板。(wavelet transform Matlab source, there are two versions, which is the second plate.)

QDPSK Communication Performance simulation

功能：CDMA调变 multiple access b/w 2 users using DS CDMA(multiple access b/w 2 users using DS CDMA format is : cdmamodem(user1,user2,snr_in_dbs) user1 and user2 are vectors and they should be of equal length)

runge kutta para motor de induç ã o

自己用matlab编写实现的一个k近邻算法，并有训练和测试数据，能运行。附有注释，简单清晰。(a k-nearest neighbour algorithm developped using matlab.)

is to parse website packet strorm

此压缩包为图像识别中sift算法demo，以MATLAB为开发平台。(This archive sift algorithm for image recognition demo, for the development platform in MATLAB.)

说明：  永磁同步电机的MTPA仿真，适用于新手练习调试(MTPA simulation of permanent magnet synchronous motor)

模拟一群鸟捕食的情景，从而达到优化目标函数的目的，这就是粒子群算法！起初在可行的空间中随机的产生一群粒子，然后让每个粒子开始在虚拟的空间中向四面八方飞翔，并且每个粒子都记下他们飞过的适应值（也就是目标优化函数）最高的点，而且整个粒子群有一个最高适应值个体，这样，粒子在飞翔的时候尽量朝向自己曾飞过的最好的点和集体的最好的点。最后达到收敛到近似最优点的目的。 (Simulation of a group of birds preying on the scene, so as to achieve the purpose of optimizing the objective function, that is, PSO! At first, where feasible, have a space in a group of random particles, and then let the beginning of each particle in a virtual space to fly in all directions, and each particle they have in mind over the fitness value (that is objective optimization function) the highest point , and the whole particle swarm adaptation has a maximum value of the individual, so that particles in the fly when he had flown as far as possible towards the best point and collective best point. Finally reaching the merits of convergence to approximate most purposes.)

本文件给出了科学计算所涉及的常用问题的源程序，同时给出了一些例题，适应初学Matlab者。(This document gives the commonly used scientific computing problems involved in source code, and gives some examples, those who meet the novice Matlab.)