DC-PM-motor

matlab 小波变换 有嵌入水印部分和提取水印部分(watermarking)

diffrence betwenn two fram

提取信号七个基于瞬时信息的特征：零中心归一化瞬时幅度功率谱密度的最大值,零中心归一化瞬时幅度绝对值的标准偏差，零中心非弱信号段瞬时相位非线性分量绝对值标准偏差，零中心非弱信号段瞬时相位非线性分量标准偏差，零中心归一化的非弱信号段瞬时频率绝对值的标准偏差，一个信号段的归一化瞬时频率功率谱密度的最大值，根据信号 QPSK 和16QAM在 XI 轴投影的不同表现，提出特征参数。(Extraction based on instantaneous information signal of seven characteristics: zero center normalized instantaneous amplitude of the maximum power spectral density, zero-center normalized standard deviation of the instantaneous rate of absolute zero center section of non-weak signal instantaneous phase nonlinear component absolute value of standard deviation, non-zero center section of the weak signal non-linear component of the standard deviation of the instantaneous phase, zero-center non-normalized absolute value of the weak signal section of the standard deviation of the instantaneous frequency of a signal segment of the normalized power spectral density of instantaneous frequency maximum, according to the signal QPSK and 16QAM in the XI-axis projection of the different performance of the proposed characteristic parameters.)

设计一个切比雪夫滤波器，要求通带截止频率 ，通带最大衰减 ，阻带截止频率 ，阻带最小衰减 。要求绘出滤波器的幅频特性曲线。(Design a Chebyshev filter, the passband cutoff frequency required, the maximum passband attenuation, stopband cutoff frequency, stopband minimum attenuation. Requirements of the filter amplitude-frequency characteristic plotted curve.)

entropy of a signal helps to find the randomness

无线网络的中继节点协作分集研究源代码，包括多种接收端技术(Relay nodes in wireless networks of cooperative diversity source code, including a variety of receiver techniques)

实现增量调制的简单的程序，十分简短。你应该可以作得更好(delta modulation to achieve the simple procedure is very short. You should be able to do better)

gold and other sequences generation for UWB transmission

这个是集成的小型文档图像透视变形校正的matlab源码(This is a small integrated document image perspective distortion correction matlab source)

matlab函数 k的阶乘 factrial(Matlab function k factorial factrial)