MATLAB-Function-Query_CN

simulates the motion of earth and moon around the sun using RK-4.

电力系统潮流计算程序，可以计算至300个以上的节点的系统。(Power flow calculation program, can be calculated to more than 300 nodes.)

最优化算法的一些程序以及结构拓扑优化的一些程序，对于初学者来说他们是非常有用的学习资料，希望大家可以从中学习到知识。(topology optimization)

curve Calculate with using the b-spline Method

用以计算离散信号的均值，均方根值，方差，峭度和歪度(The mean value of discrete signal to the RMS value, variance, kurtosis and skewness.)

律u律pcm编码 若输入A律PCM编码器的正弦信号为x(t)=sin(1600πt),采样序列为x(n)=sin(0.2πn),n=0,1,2,…,10，将其进行PCM编码，求出编码器的输出码组序列y(n)。 要求：1) 直接采用A律扩展器函数求解上述问题。 2）使用13折线法近似A律PCM 求解上述问题。 3）计算量化误差。(Law a law pcm coding If the input A-law PCM encoder is sinusoidal signal x (t) = sin (1600πt), for the sample sequence x (n) = sin (0.2πn), n = 0,1,2, ..., 10, it will be PCM coding to obtain the coded output code group sequence y (n). Requirements: 1) directly A-law expander function to solve the above problems. 2) using a 13 fold line approximation A-law PCM to solve the above problems. 3) calculating the quantization error.)

本程序是关于大规模MIMO的一个简单程序，很容易懂。用仿真结果。(This procedure is a simple procedure for large-scale MIMO, it is easy to understand.)

IEEE 802.11a-1999 or 802.11a was an amendment to the IEEE 802.11 wireless local network specifications that defined requirements for an orthogonal frequency division multiplexing (OFDM) communication system. It was originally designed to support wireless communication in the unlicensed national information infrastructure (U-NII) bands (in the 5–6 GHz frequency range) as regulated in the United States by the Code of Federal Regulations, Title 47, Section 15.407.

说明：  利用遗传算法解决列车优化运行问题，为了简化问题考虑只有一个牵引和惰性的过程。(Genetic algorithm is used to solve the problem of train operation optimization. In order to simplify the problem, there is only one process of traction and inertia.)

数值微分通过matlab实现，对于初学者非常有用。从书上下载的源代码。(Achieved by numerical differentiation matlab, very useful for beginners. Downloaded from the book source code.)