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现代社会发展要求通信系统功能越来越强，性能越来越高，构成越来越复杂；另一方面，要求通信系统技术研究和产品开发缩短周期，降低成本，提高水平。这样尖锐对立的两个方面的要求，只有通过使用强大的计算机辅助分析设计技术和工具才能实现(Social development of modern communication systems require increasingly strong, the performance is getting higher and higher, which constitute more and more complex On the other hand, communications systems technology research and product development to shorten the cycle, reduce costs, improve the level. This in sharp opposition to the two requirements, only through the use of powerful computer-aided analysis and design techniques and tools can be achieved)

对mimo的信道模型进行仿真，在OFDM技术下，MIMO信道的特性进行仿真(mimo channel )

plotangle函数是一个可以用来画两个向量夹角的函数.(plotangle function is a painting can be used to the angle between two vectors function.)

用matlab软件实现图像轮廓的提取，程序简单好用。(Matlab software using the image contour extraction procedures are simple and easy to use.)

特征值分解的例子，music算法，pisarenko算法等(Eigenvalue decomposition of the example, music algorithm, pisarenko algorithm)

multidevice antenna for portable device

FOUR MINUS ALTERNATIVE PIXELS IN AN IMAGE

Reshapes vector data to grid

Differentiation of the Gaussian pulse

说明：  基于matlab的编程实现神经网络BP算法实现数据的分类(matlab bp)