dwt1-watermark

基本的matlab程序希望有原码的高手 多多提供共同学习(Matlab basic program hope to have the original code to provide a common learning more players)

说明：  删除卷积码的matlab仿真,广泛应用于通信系统中(delete the Matlab simulation, widely used in communication systems)

说明：  用matlab计算二维光子晶体带隙并做出带隙图 以及计算二维声子晶体（XY模）的能隙并作出图(2D Photonic crystal band structure 2D phonic crystal(XY model) band structure)

无刷直流电机调速系统仿真模型，霍尔传感器提供位置信号，调压调速(Brushless DC motor speed control system simulation model)

改进的虚拟激励法，用于大型结构的随机频域计算，在建筑、航天、机械领域已得到广泛的应用。(Improved pseudo-excitation method for the large-scale structure of random frequency-domain calculation, in the construction, aerospace, mechanical field has been widely used.)

This matlab code is for pressure profile for slider bearing. Inputs need to be given acc to bearing being used.

信号数目估计错误的最大似然波达方向估计的性能分析(The number of signal estimation error of maximum likelihood DOA estimation performance analysis)

说明：  用窗函数法设计一个能对模拟信号进行滤波的线性相位FIR低通滤波器。抽样频率为 kHz，通带截止频率为 kHz，阻带截止频率为 kHz，要求阻带最小衰减 dB。为了降低运算量，所设计滤波器的阶数要尽可能的低(With the window method to design a filter to the analog signals of linear phase FIR low-pass filter. Sampling frequency is kHz, passband cutoff frequency kHz, stopband cutoff frequency of kHz, the minimum required stopband attenuation dB. To reduce the computation, the order of the filter designed to be as low as possible)

在matlab中，实现图像旋转（两种方法：临近法、双线性法）(In matlab, the realization of image rotation (two methods: near the bilinear method))

Test whether the difference of two Sharpe ratios is statistically significant. No normality assumption needed, the bootstrap approach approximates the data-generating process.