second-chapter

该源代码是本人亲自所写，使用DWT对图像可以进行三次小波分解，直接下载可以使用，对图形图像处的同行们非常有用，欢迎下载。(The source code is written by himself, the use of DWT can be three times the image wavelet decomposition, a direct download can be used in the graphic image Department colleagues very useful are welcome to download.)

说明：  用matlab程序模拟实现cdma系统的整个过程。包括并串、串并转换，m序列的产生，直接扩频、解扩，qpsk的调制解调，载波调制解调等。(Matlab simulation procedures used to achieve the whole process of cdma systems. Including and string SERDES, m sequence generation, direct spread spectrum, despreading, qpsk the modulation and demodulation, carrier modulation and demodulation, etc..)

最近邻方法实现印刷体数字识别，及相关数据转换程序(Nearest neighbor method to achieve printed numeral recognition, and related data conversion process)

各种周期信号的傅里叶变换，如门信号等，还有些就是常用的信号。(A variety of Fourier transform of periodic signals, such as the gate signals, some signal is commonly used.)

Matlab的OFDM在多径Rayleigh信道下的同步 1. 假设频率已同步，设计OFDM一种具体的采用循环前缀进行时间同步方法，用Simulink进行仿真，画出比特信噪比与捕获概率的关系曲线。 2. 设时间已同步，设计OFDM一种具体的采用循环前缀进行频率同步方法，用Simulink进行仿真，画出比特信噪比与频率同步误差的关系曲线.(Matlab-OFDM in multipath Rayleigh channel synchronization 1. Assume that the frequency has been synchronized, the design of a specific OFDM cyclic prefix for time synchronization method, using Simulink simulation to depict the bit signal to noise ratio and the capture probability curve. 2. Set up time is synchronized to design a specific OFDM cyclic prefix for frequency synchronization method, using Simulink simulation to depict the bit signal to noise ratio and frequency synchronization error of the curve.)

MATLAB 的一些运算，关于矩阵以及一些例子。初学者专用，全面专用快速(Some operations on the matrix, as well as some examples. Beginners dedicated, full-specific rapid)

对标的资产过程服从几何布朗运动的期权用蒙特卡洛模拟数值算法进行定价(The underlying asset process follows a geometric Brownian motion of options using Monte Carlo simulation, numerical algorithms pricing)

生成二维码源码，直接输入相关参数即可生成二维码(generate qrcode)

一份简单的FM调制以及解调的matlab程序,对于刚学习通信系统的朋友有用(A simple FM modulation and demodulation matlab program, for a friend just to learn a useful communication system)

可以对给定的对象数据特征进行分类，里面的程序可以很好的运行，希望共同讨论运用 。(Characteristics of a given object data classification, which the program can run, I hope to discuss the use )