PSNR_Stegnography

A SISO 20M OFDM system based on IEEE802.11n standard, using Matlab.

实现几十中案例开发，适合初学者的学习，能从中得到一个比较大的提高，从中也可以得到学习软件工具的乐趣。(Dozens of cases of the realization of development, suitable for beginners to learn, can be a big improvement from can also be fun learning software tools.)

[自動控制]Time domain 2 norm 計算程式。輸入system function(由TF, ZPK, SS, FDS建立)，程式會自動計算2-norm.(NORM2(G) computes the 2-norm, i.e. the RMS value, of a strictly proper stable system G (created with either TF, ZPK, SS, or FRD). || [RMS_VALUE, AUG_ROUTH_TABLE]=NORM2(G) returns the RMS value and the augmented routh table of the given system. || Get the numerator and denominator of the system transfer function )

支持向量回归机的参数选择程序，通过交叉验证选择惩罚参数、损失函数以及核函数(SVM parameter selection procedure)

说明：  直接转矩控制的研究，它是基于MATLAB7.01的(Direct Torque Control of the research, which is based on the MATLAB7.01)

This program used for spectral analysis of building according earthquake code 2800 of Iran.

equalizer respone for channel F1(Z)=.1Z^2-.25Z^1+1-.25Z^-1+.1Z^-2 for zfl with tap=7,9,15

正交频率采样欠采样测量频率处理程序 可以对信号频率进行估计(zhengjiaocaiyang.m)

当信噪比较大时，采用广义最小二乘法可能会出现多个局部收敛点，解决这个问题的方法可用多级最小二乘法，一般来说多级最小二乘法包含三级辨识过程。利用输入输出数据，通过多级最小二乘法，可分别求的辅助模型，过程模型和噪声模型的参数估计值。在高噪声的情况下，多级最小二乘法明显优于广义最小二乘法，其收敛点唯一。(When the signal noise ratio (SNR), and by use of the generalized least squares method may appear more local convergence point, the way of solving this problem can be used multistage least squares method, and generally multistage least squares method includes three identification process. Using input/output data, through the multistage least squares, respectively for the auxiliary model, process model and noise model parameter estimation. In the high noise, multistage least squares method is obviously superior to the generalized least squares method, and its convergence point only.)

Matlab使用的算法，非常好,非常酷，非常好用(Matlab is a very goog tool.Matlab is so cool.)