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matlab下实现降噪，功率谱计算。％程序中设定采样点数为256个，采样频率为10000hz， ％输入信号为随机噪声和两个正弦的合成信号 ％设定的滤波器的截止频率为3500hz ％通过挈比雪肤滤波器，运行程序，比较滤波前后的频域波形 ％滤波去除了高频信号(matlab achieve noise reduction, power spectrum calculation. Sampling procedure set for 256 points, the sampling frequency of 10000hz, input signal for the random noise and the two sinusoidal signals synthetic filter set a cut-off frequency 3500hz manner than through the filter雪肤, run procedures, compared before and after filtering in frequency domain waveforms filtering in addition to high-frequency signals)

《通信天线建模与MATLAB仿真分析》一书配套matlab程序( Communications antenna modeling and MATLAB simulation analysis, a book matching matlab program)

递归函数调用，使用switch case语句实现切换编程回调结构。(Recursive function calls, switch case statement switch programming callback structure.)

说明：  MatLab工程数学应用 一书的电子版，内容非常实用(MatLab Application Engineering Mathematics electronic version of the book, the content is very practical)

SPCA 主成分分析 数据分析中的必备精品。数学知识哦(The SPCA the main component analysis)

详细Matlab函数查询手册（官方英文）(Matlab Function )

说明：  kmeans程序，用以各种方面聚类分析，诸如入侵检测和图像等。(kmeans method，used in many fields， such as intrusion detection, imag segmentation and etc. )

采用fdtd方法，分别计算平面波照射到1维层介质的反射与透射以及在理想介质中的传播，场源可为高斯源或者正弦源，可以直观理解趋肤深度和边界概念(By fdtd method, were calculated to 1-dimensional plane wave radiation reflection and transmission media layer and spread in an ideal medium, the field for the Gaussian source or sources can be sinusoidal source, you can intuitively understand the concept of skin depth and the boundary)

一个LDPC的仿真程序工具包（由matlab编写而成），内含校验矩阵构造，编码、译码码模块等(An LDPC Simulation Toolkit (written by matlab), containing the check matrix structure, encoding, decoding code module)

ALOHA接入协议仿真，对吞吐量和时延进行仿真分析，同时对比了有无捕获效应两种情况下的性能(ALOHA access protocol emulation, simulation throughput and delay analysis, and comparison of the performance of whether the capture effect in both cases)