test1_NL2

说明：  主要讲述ofdm的原理，非常详细，可供需要者参考！很好(Mainly about the principle of ofdm, very detailed, for those who need it for reference! Well)

GPS天线模型数据，相减对比程序，将需要的数据进行分析(GPS antenna-model compare)

k近邻的两种改进算法，采用matlab实现，使得算法效率有了较大提高。(two methods for knn，both of them are run in matlat.)

the threshold obtained in maximum entropy is optimized with particle swarm optimization. the result is good

Adopt the scatteringcosinealternationtocarryoutalternationontheimage(Adopt the scatteringcosinealternationt ocarryoutalternationontheimage)

2ASK、2FSK、2PSK数字调制系统的Matlab实现及性能分析比较(2ASK, 2FSK, 2PSK digital modulation system Matlab implementation and performance analysis and comparison)

说明：  给出了通过MATLAB计算VaR的各种方法和实例(MATLAB code for Value-at-risk)

对于淹没在复高斯白噪声中的信噪比为-5dB二次调频信号，在矩形窗长为256的情况下，滤波器组时频检测仿真(for drowned in the complex Gaussian white noise in the signal-to-noise-dB second FM signal in the long rectangular windows of the 256 cases, the time-frequency filters Detection Simulation)

说明：  这是灰色GM(1,1)预测的源代码，只要你输入数据，就可以预测以后的数据，必要时可以修改程序(This is a gray GM (1,1) forecast of the source code, as long as you input data, the data can predict the future, if necessary, modify the program)

The Fourier transform, named for Joseph Fourier, is an integral transform that operates on the mathematical representation of a function in time and produces a function in frequency. The term Fourier transform customarily refers to both the transform operation and to the function it produces.