nsct_toolbox

这个程序是通信系统的信道仿真，完成了某些信道仿真的功能(This program is the communication channel simulation system, complete channel emulation of some functions)

matlab主要的函数与命令，适合菜鸟学习。电子书格式是pdf格式(matlab main functions and command)

这个是用阶跃风速、风轮、传动系统以及转速控制器的模型，来观测风力发电机的阶跃相应(This step is to use the wind speed, wind turbines, transmission system and the model of the speed controller to measure wind generators step accordingly)

小波包分析提取振动信号中的特征频率，旋转机械二维全息谱计算，最小均方误差等算法的MSE的计算。( Wavelet packet analysis to extract vibration signal characteristic frequency, Rotating machinery 2-d holographic spectrum calculation, Minimum mean square error MSE calculation algorithm.)

最小二乘无线信道估计与均衡，产生训练序列，信道估计，mse随信噪比变化曲线 (Least Square channel estimation, MMSE curves,BER chart)

先对语音信号进行采集、播放，分析其频谱，对该信号源添加噪声，再播放音频并分析频谱，然后分别通过IIR低通、带通滤波器和FIR低通、带通滤波器，分别播放音频和得到滤波后的频谱。(Firstly， voice signal acquisition, play, analyze its spectrum to add noise to the signal source, and then play the audio spectrum analysis, and then were by IIR low-pass, band-pass filter and FIR low-pass, band-pass filters, respectively, play audio and get the spectrum after filtering.)

emd算法 还是比较详细准确的算法 英文注释(emd algorithm is more detailed and accurate algorithm for English Notes)

提出了一种基于小波变换可抗击几何攻击算法。在水印嵌人 部分# 首先对宿主图像进行小波分解 、 嵌人水印, 再通过余弦变换求得该水印图像的一个特征向量, 利用该特征向量和水印 信息通过12 31 函数生成一个二值逻辑系列, 将该序列作为密钥/ 水印提取部分为# 对待测的图像进行小波变换, 再通过余 弦变换求得待测图像的一个特征向量, 利用该特征向量和密钥通过1 2 4 1 函数提取出水印。(Proposed based on wavelet transform algorithm can be against geometric attacks.# Watermark embedded in the first part of the host image wavelet decomposition, embedded watermark, and then through the cosine transform of the watermarked image obtained by a feature vector, using the feature vector and the watermark information through 1231 to generate a binary logic function series, the sequence as the key/watermark extraction part is# treated transform measured image, and then obtained through the cosine transform the image of a feature vector under test, using the feature vector and the key function by 1241 to extract the watermark .)

本函数将完成对输入的一维信号进行多尺度离散小波分解(This function will complete the one-dimensional signal input multi-scale wavelet decomposition)

Network authentication system - without the server version(Network authentication system- without the server version )