emd

图片任意角度旋转，没有做插值处理，matlab版本。(Image rotation any angle, does not do interpolation, matlab version.)

改程序模拟了，对前推回代方法计算配电网潮流计算，迭代次数少(Modified simulation on forward and backward substitution method, calculation of distribution network power flow calculation, less iteration )

典型的多项式快速傅里叶变换程序，现在只做到三阶，为初学者提供参考。(A typical polynomial fast Fourier transform program, now only do third-order, provide a reference for beginners.)

选拨赛数学建模题目-网络谣言的传播模型。文件中包括题目、参考文献和matlab代码。basic.m中是最简化的模型，extend1.m中更进一步，算法中引入老年人和年轻人的活跃程度和对谣言的易信度的不同，beacons.m中再进一步引入网络警察角色来演化谣言的传播。(American Mathmetical Modeling Competition. Title:Spread of Internet Rumours.The file inclueds the title document,the reference literature and the MATLAB code.)

基于matlab中的simulink的pcm编码解码器的仿真结果(Simulink in matlab based on the pcm codec simulation results)

基于多种经典参数估计算法的窄带信号源DOA估计(for narrowband signals DOA estimation Based on a variety of classic algorithms )

内部连个文件，一个是多天线阵列的方向图，一个是多天线v-blast仿真程序，对学习波束成形的朋友有用。(Even within the files, a multi-antenna array pattern, a multi-antenna v-blast simulation program, to learn useful for beamforming friends.)

符号定时，求得单个OFDM符号的开始和结束的精确时刻通过计算接收信号和已互参考的相关系数实现。(Symbol timing to obtain a single OFDM symbol of the beginning and end of the precise moment by calculating the received signal and each reference to realize the correlation coefficient.)

模拟2个独立窄带信号分别以20°，60°的方向入射到均匀线阵上，信号间互不相关，与噪声相互独立，噪声为理想高斯白噪声，阵元间距为入射信号波长的1／2，信噪比为20dB，阵元数为10，采样快拍次数为200。(Simulate two independent narrowband signals in the direction of 20 °, 60 ° of the incident on the ULA, among signal unrelated, independent noise, the noise is ideal Gaussian white noise, the array element spacing of the incident signal wavelength of 1/2, the signal to noise ratio is 20dB, the array element number 10, the sampling frequency of 200 snapshots.)

排队论轮询算法的matlab性能仿真，包括简单轮询算法和加权轮询算法，比较10个节点网络的生存时间，自己写的代码~(Queuing theory polling algorithm matlab performance simulation, including a simple algorithm and weighted round robin polling algorithm and compare 10 node network lifetime, write your own code ~)