approx_entropy

its about ofdm channel estimation

matlab模拟的圆孔衍射 平面波 衍射间距可调(Matlab simulation using circular aperture diffraction images, the incident light for the plane wave)

拟合实验 代数方程组的解法 微分方程实验(fitting the experimental algebraic equations experimental differential equations Solution)

精通MATLAB 是北航的张志用写的电子书 介绍了MATLAB6.5的使用 (Proficient in MATLAB was written by Zhang Beihang' s book describes the use of MATLAB6.5)

Sensoer code is realted to loacalization that is written in matlab programming..

GAUSSIAN FUNCTION IMPLETEMENTD IN MATLAB BUT I NO SURE THIS WORK

说明：  基于股票分析方法的电力系统负荷预测：主要思路是从过去的负荷中得出对应的DIF值、DEA值、MACD值。然后再通过DIF去估测明天DIF估计值、DEA估计值、MACD估计值。然后又通过DEA、MACD估计值算出一个新的DIF估计值。再将这两个DIF估计值算术平均得出一个新的DIF估计值，然后反推出负荷的预测值，这样就完成了负荷预测。(The main idea is drawn from the past load values corresponding to the DIF, DEA value, MACD value. And then estimate DIF ,DEA,MACD in tomorrow use the past DIF , DEA , MACD. Then through the DEA, MACD calculate a new estimate of DIF. Then the arithmetic average of the two estimated DIF derived a new estimate of DIF, and then introduce predictive value of load, so that is the completion of the load forecast. )

科斯塔斯环 有助于载波同步的研究 锁相 载频3.563MHz，初始频率3.5628MHz 绘图显示具体的循环锁相过程 绘图显示相位变化(Costas reference for carrier synchronization fc0=3.563MHz,fc=3.5628Mhz show the process of synchronzation and phase change with figure. )

 利用fft()进行快速傅立叶变换，得到频谱，画出正弦函数及其频谱  找出频谱中使得Y轴取最大值时的估计频率记为ft  加入白噪声，绘出信噪比和均方误差的关系曲线 ( using fft () for fast Fourier transformation, spectrum, to draw the sine function and its spectrum  find the spectrum makes the Y-axis maximum value when the estimated frequency is denoted by ft  adding white noise, SNR plot and mean square error curve)

通信系统中常用的多进制数字相位调制的源代码 并结合ofdm系统 加入了相应的保护前缀（cp）和导频序列 应用于有关ofdm的信道估计等系统(Communication systems commonly used in multi-band digital phase modulation of the source code and combine OFDM system by adding a prefix corresponding protection (cp) and the pilot sequence used in the relevant channel estimation of OFDM systems)