Giao-trinh-matlab-DKTD

threshold signcryption based on ecc

说明：  此程序为语音信号的过零率检测，白噪声过零率远远高于语音信号，故可通过对过零率的检测判断出是不是语音信号。(This procedure for the zero rate of speech signal detection, white noise zero crossing rate is much higher than the speech signal, it can zero rate by detection of voice signal is not judged.)

利用matlab程序生成史密斯圆图，供微波工程人员进行参考。(Matlab program to generate a Smith chart for microwave engineering staff for reference.)

一个整流双闭环的simulink仿真。采用电压外环电流内环设计，效果理想(Rectifier double simulink)

该程序用MATLAB实现了目标的跟踪，它是静态背景为核心的。(Realize the target tracking)

matlab的主元分析问题。这个程序分三部分，读入图像生成数据，归一化，然后PCA降维。在PCA降维中调用软件自带函数。(pca in matlab)

用MATLAB实现频域平滑滤波以及图像去噪代码，可以实现数字图像处理及去噪(Smoothing filter frequency domain using MATLAB and image denoising code can achieve the digital image processing and denoising)

霍夫曼编码n元编码，可以计算出平均码长，编码效率(Huffman coding n-ary coding, can calculate the average code length, coding efficiency)

The document contains a turbo code descrription

自编功率谱估计的程序，可以计算功率谱，很有效(zibiangonglvpugujidechengxu，keyijisuangonglvpu)