cox1cox-watermarking

some matlab codes for image processing

Max Lyapunov 可以计算最大的Lyapunov 指数(Max LyapunovMax Lyapunov 可以计算最大的Lyapunov 指数Max Lyapunov 可以计算最大的Lyapunov 指数)

hidden markov model decode

说明：  an investigation on use of chaotic sequence in DS-CDMA. The DS-CDMA systems offer physical layer security without the need for a significant increase in computation or power requirements. Nowadays, DSCDMA has been used widely. These systems suffers from multiple access interference because of other users transmitting in the cell, channel inter symbol interference and additive white Gaussian noise. Codes have an effective role in DSCDMA system, so M-sequences; gold sequences have been used as spreading codes in DS-CDMA. These sequences by shift registers and periodic in nature are developed. However, these sequences are not enough and also limit the security. This paper presents an investigation on use of new type of sequences called chaotic sequences for DS-CDMA system. These sequences by chaotic maps are generated.

汪小帆，陈关荣版复杂网络理论及应用书中的部分程序，包括WS，BA，internet，NW，tiers，waxman等等。(Wasserman s.and Faust k, social edition complex network theory and application of the book is part of the program, including WS, BA, Internet, NW, tiers, waxman and so on. )

用逐次镜像法计算输电线路的电场强度和电势分布(Calculation of electric field intensity and potential distribution of transmission lines by successive mirror image method)

说明：  由于时域求导有误差，用来在频域处理时域信号数据。(It is used to process time domain data in frequency domain.)

阵列信号处理，自适应波束形成，Capon算法(array signal processing，adaptive beam forming，Capon)

基于MATLAB图像处理技术随书源代码第八章(MATLAB-based image processing technology with the book source code Chapter VIII)

this will perform thresholding operation on input image