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直接序列扩频和跳频扩频直接序列扩频和跳频扩频(直接序列扩频和跳频扩频)

matlab基础训练题及答案，矩阵运算等适合初级学习者。(the simple exercise of matlab,for new learner)

主要介绍了新矩阵的创建，包括1）建立新矩阵；2）空矩阵；3）向量和子矩阵的生成；4）MATLAB中的特殊矩阵(Introduces a new matrix of creation, including 1) the establishment of a new matrix 2) empty matrix 3) vectors and matrices generated 4) MATLAB in the special matrix)

对数输入据进行解调，并且对接收信号进行时间以及频率同步(Demodulation, time and frequency synchronisation)

用matlab产生的仿噪声文件源码.可以代替语音信号进行实验测试.(Imitation with matlab noise generated source file. Can replace the voice signal test.)

说明：  viterbi的MATLAB编程，大家可以看看。谢谢(viterbi of MATLAB programming, we can look at. Thanks)

实现带通信号经过带通系统后的结果与其等效的基带信号经过等效的基带系统的结果比较 (With communication, realize through bandpass system with the results of equivalent baseband signal after the results of the system of baseband equivalent comparison )

matlab 自带svm的测试, 用设置的数据简单测试svmtrain函数和svmclassify函数，并用图明确表示，自测结果正确，适合初学者(Matlab is equipped with SVM test, and the svmtrain function and svmclassify function are simply tested with the set data, and the figure clearly indicates that the self-test result is correct and suitable for beginners)

La transformée en ondelette discrète (en anglais Discrete Wavelet Transform, ou DWT) est une technique utilisée dans la compression de données numériques avec ou sans perte (JPEG2000). La compression est réalisée par approximations successives de l information initiale du plus grossier au plus fin. On réduit alors la taille de l information en choisissant un niveau de détail.

本例用五点差分法求解一个二阶偏微分方程，其间用Gauss-Seidel迭代求解(This example uses a five-point difference method for solving second order partial differential equations, during use Gauss-Seidel iterative)