floyd

应用傅里叶变换DFT，分析各种离散信号x(k)的频谱。离散周期信号可以展开成傅里叶级数，所以离散周期信号的频谱 是一个周期的周期性离散频谱，各谱线之间的间隔为 ，而且存在着谐波的关系。 (DFT application of the Fourier transform, analyze discrete signal x (k) of the spectrum. Discrete signal cycle can begin as Fourier series, the discrete signal spectrum is a cyclical cycle of discrete spectrum, the line between the interval, but there is a harmonic relationship.)

A Costas loop is a phase-locked loop used for carrier phase recovery from suppressed-carrier modulation signals, such as from double-sideband suppressed carrier signals. It was invented by John P. Costas at General Electric in the 1950s. Its invention was described as having had "a profound effect on modern digital communications".

Nested Array Antenna Simulation

一个采用神经网络拟合sin函数的matlab程序(Matlab program using a neural network to fit the sin function)

说明：  DE算法 经典的算法，来自于英文文献，适于研究DE算法(Simple DE algorithm )

DCT_Qutization_watermarking基于DCT量化水印算法(DCT_Qutization_watermarking quantization watermarking algorithm based on DCT)

nginx源码分析，全面易懂。正在研究nginx的朋友可以看看。(nginx source code analysis, comprehensive and easy to understand.Studying nginx friends can see.)

2_d TMz wav propagation in free space

纯ALOHA协议的源程序。分为主程序和调用程序(The source of the pure ALOHA protocol. Divided into the main program and the calling program)

便于开发Matlab，可以用来安装最新的matlab(Facilitate the development of Matlab can be used to install the latest matlab)