Signals-and-SystemsAnalysis-and-threalization-of-M

OFDM 信道估计的程序~~~~~~~~(OFDM channel estimation procedure ~~~~~~~~)

用于脑电信号特征提取的InfoMax Algorithm Based on ICA；也可以稍作改动用于其他信息提取。(for feature extraction InfoMax Algorithm Based on ICA; Minor modifications can be used to extract other information.)

说明：  这是一个机遇鱼群算法的节点部署源代码，对于研究鱼群算法的朋友有帮助，请大家参考。(This is an opportunity to fish the source code node deployment algorithm, the algorithm for the study of fish friends to help, please refer to.)

可以清楚的知晓信号随时间轴和频率轴的变化，相当的方便(Can be clearly known with the axis and a frequency axis signal changes, considerable convenience)

matlab编写的多示例多标记分类程序，采用miSVM算法，svm做分类器，其中附有各个调用函数，和作为例子的数据和主程序，可以运行，可以多多示例多标记样本进行分类。(matlab prepared multi-instance multi-label classification procedures, using miSVM algorithm, svm do classifier, which function with each call, and as an example of the data and the main program, you can run, you can sample a lot of examples of multi-label classification.)

1、验证窗函数 N 变化时，验证其频谱主瓣副瓣比、主瓣宽度的变化。 a)矩形窗函数的 N 变化时，验证其其频谱主瓣副瓣幅度比基本不会发生变化， 而主瓣宽度将会变窄。这说明，当用矩形窗函数设计滤波器时，增大 N 不能使 得阻带衰减减小，但能够减小过渡带。 b)再选取其他的窗如 hamming/hanning 窗，验证当 N 变化时，其频谱主瓣宽 度变化、主瓣副瓣比值变化情况。 2、用窗函数法设计线性相位 FIR 低通，通带截止频率 wp=0.5PI, 阻带截止频率 ws=0.6PI, 阻带衰减不小于 40dB,通带衰减不大于 3dB. a)选取 Hanning,Hamming 窗查看设计出来的 FIR 的过渡带宽和阻带衰减是否 满足要求，二者有什么不同。 b)使用 hamming 窗，将窗长增大 1 倍，设计 FIR。验证同样的窗函数类型 (hamming)，不同窗长度时，设计出来的 FIR 的过渡带宽和阻带衰减都有什么变 化。 3、不使用 Matlab 系统函数得到上一项指标的低通，并与上一项结果比较。 4 用窗函数法设计线性相位 FIR 高通，通带截止频率 wp=0.8PI, 阻带截止频率 ws=0.7PI, 阻带衰减不小于 30dB,通带衰减不大于 3dB.(An actual filter is implemented using the truncated unit impulse response sequence of the ideal filter. For the ideal low pass filter, the unit impulse response h, N, D () is intercepted by a length of N, and the length is The N sequence H (n), when intercepted, guarantees causality and linear phase requirements for the filter. In order to reduce the Gibbs effect, the H (n) window is added, and the appropriate window function is selected to ensure the stopband attenuation and Transition zone requirement. Note that the sidelobe of the window function affects the stopband attenuation of the filter, and the main lobe width affects the filter Transition bandwidth.)

display a motion vector for a video compression

小波分析mallat经典算例，欢迎大家尝试，比较经典，适合小波理论的初级阶段学习。(wavelet analysis——mallat )

用于生成一定齿数一定直径的摆线轮线型，输出的文本文件可与数控机床相链接，直接用于生产加工。(Used to generate a certain number of teeth a certain diameter of the cycloidal linear, the output text file that can be linked with the CNC machine tools directly used in production and processing.)

实现了时分复用,并在信道中加入高斯白噪声(Achieved a time-division multiplexing, and in the channel by adding Gaussian white noise)