PMKFandPAKF

数字信号处理与应用，包含是与特征值的求取(Digital signal processing and applications，including characteristic value and the calculating )

CreateConstellations.m用matlab实现一个星座图象(CreateConstellations.m using Matlab achieve a constellation of images)

fft傅里叶变换，将时序信号变换到频域坐标下，进行数据的模态分析(fft transform)

QPSK for AWGN and Rayleign fading channel example

matlab 独立分量分析 fastica,icaplot,remmean,whiten，盲源分离,去均值,白化处理(matlab independent component analysis fastica, icaplot, remmean, whiten, blind source separation to the mean, whitening treatment)

说明：  通信系统方面的matlab书籍,对通信系统相关方面都有涉及,是用matlab仿真通信系统的教材.(Communication systems matlab books related to aspects of the communication system involved is the simulation of communication systems using matlab materials)

基于 DCT(离散余弦变换 )域的信息隐藏算法是目前应用最广的变换域算法 ,此类算法的最大不足是嵌信息量小。通过分析 DCT域隐藏算法隐藏容量少的原因 ,提出了一种大容量的 DCT域信息隐藏算法。算法首先对载体图像进行频谱均匀化处理 ,然后对图像进行全局 DCT变换 ,并将隐藏信息嵌入到载体图像的低频 DCT系数上 ,信息嵌入采用分段量化的方法实现 ,提取隐藏信息时不需要原始载体图像。实验结果表明 ,该算法的嵌入容量大 ,不可感知性好。(Based on DCT (discrete cosine transform) domain information hiding algorithm is the most widely used transform domain algorithms, the largest of these algorithms is the lack of a small amount of information embedded. Hiding Algorithm for DCT domain by analyzing the hidden reasons for the low capacity, a large capacity of information hiding algorithm for DCT domain. Firstly, the spectrum of the carrier image homogenization, and then the image is a global DCT transformation, and hidden information embedded into the image of the low-frequency DCT coefficients, the information embedded in the methods used to achieve sub-quantization, extract hidden information without the original Vector image. Experimental results show that the algorithm embedding capacity, can not be perceived good.)

matlab code for watershed algorithm based on immersion

功率谱估计和信号频率估计方法 周期图法 BT法(Power spectrum estimation and the signal frequency estimation methods periodogram )

对某些点的一维距离像的MATLAB仿真，通过脉冲压缩实现。(The MATLAB simulation of the one-dimensional distance profile of some points is achieved by pulse compression.)