shibie

产生几种典型的电能质量扰动信号源及其该信号源的ST变换(Produced several typical power quality disturbance source and the transformation of the source ST)

基于RSSI室内定位算法仿真，运用MATLAB平台实现定位算法(Simulation of indoor location algorithm based on RSSI)

用kmeans初始化em算法，并用高斯回归进行拟合，用于图想的聚类(Kmeans initialization using EM algorithm, and the use of Gauss regression fitting, used to map the clusterin)

introduction of fisher

MMM1排队系统建模与仿真，可以用MATLAB运行，有2个仿真图(MMM1 queuing system modeling and simulation, you can use MATLAB to run, there are two simulation charts)

现代通信系统matlab第八章信道容量和编码源代码(Modern communications systems matlab Chapter VIII channel capacity and coding source code)

matlab 7.0下册，还有上册，大家一起下载吧。很有用的数学工具。(matlab 7.0 Book, but also on the list and we can work together to download it. Useful mathematical tool.)

Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection and authentication of multimedia data in a networked environment, since it makes possible to identify the author, owner, distributor or authorized consumer of a document. A new watermarking technique to add a code to digital images is presented: the method operates in the frequency domain embedding a pseudo-random sequence of real numbers in a selected set of DCT coefficients. Watermark casting is performed by exploiting the masking characteristics of the Human Visual System, to ensure watermark invisibility. The embedded sequence is extracted without resorting to the original image, so that the proposed technique represents a major improvement to methods relying on the comparison between the watermarked and original images.

说明：  根据传输频率、天线高度、距离等因素，仿真在多种场景下的大尺度衰落模型(According to transmission frequency, antenna height, distance and other factors, the simulation in a variety of scenarios of large-scale fading model)

实现图像的对数极坐标变换，具有旋转不变性，可用于数字水印的抗几何攻击(achieving the right number of images Polar transform, with a rotating invariance, the digital watermark can be used against geometric attack)