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mimo系统中空时码是其关键技术之一。本程序提出一种新的算法，能有效地提高传输速率(Space-time MIMO system code is one of the key technologies. This procedure presents a new algorithm, can effectively improve the transmission rate)

说明：  介绍了一种用于ip电话的自适应回声消除器，采用LMS自适应滤波器实现。首先通过MATLAB进行LMS算法的步长选择,并用生成的符合G.168要求的带限CCS测试信号对回声消除器的性能进行了测试(Introduced a kind of adaptive echo cancellation ip phone device, using LMS adaptive filter. Carried out by MATLAB first step LMS algorithm selection, and use the resulting band-limited meet G.168 requirements of CCS test signal on the performance of echo cancellation devices were tested)

Matlab C++ BOOK Matlab C++ BOOK Matlab C++ BOOK Matlab C++ BOOK Matlab C++ BOOK Matlab C++ BOOK Matlab C++ BOOK

程序实现了分数阶统一混沌系统，为分数阶混沌系统在实际中的应用奠定了基础。(program of fractional unified chaotic systems, fractional chaotic system in practical application laid the foundation.)

The file can be used for plate mesh in finite element alaysis.The code may be further modified for other shapes.

在matlab7.0下沒問題，有性趣的人可以拿回去參考參考。(Matlab7.0 no problem in the next, there are interested people can go back and refer to the reference holding.)

Impementation code for CAC for NGMN ========================= This code simulates the operation of a wireless cellular system

本程序是功率谱密度的仿真比较,关于三个信号源的具体情况参见《现代数字信号处理导论》上册，P202，习题5。 实验方法：周期图法、自相关法和协方差法。 (this procedure is the power spectral density of the simulation, 3 signal source on the specific circumstances, see the "modern digital signal processing" Introduction to the first volume, P202, Exercise 5. Experimental Methods : Chart cycle, since the correlation and covariance method.)

利用matlab编程计算矩阵的协方差，对数学建模很有用(slove mathematics things)

MATLAB代码中hough变换检测直线(Detection Hough transform in MATLAB code line)