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这个文件在matlab环境下，实现了多径衰落信道的仿真。可以应用在无线通信仿真中。无线通信的仿真离不开信道。(This file is in the matlab environment, to achieve a multi-path fading channel simulation. Can be used in wireless communication simulation. Simulation of wireless communication channel can not be separated.)

BP-神经网络相关的Matlab源码程序(BP)

PGPI(NUM,DEN,W,FI,A) plots the stability boundary locus L(KP,KI,W)in the (KP,KI)-plane for an LTI system with transfer function defined by its NUM, DEN coefficients and driven by a PI controller with transfer function, C(s)=kp+(ki/s). Frequency (W) gridding becomes important. Phase Margin, FI, and Gain Margin, A, can be defined. The method works for open loop stable or unstable, minimum or nonminimum phase systems. With Examples. Method and examples used are form "Computation of Stabilizing PI and PID Controllers" by Nusret Tan, Ibrahim Kaya and Dereck P. Atherton. MATLAB release MATLAB 7.5 (R2007b)

k分布累积分布函数的程序和生成任意一元连续分布随机数(The distribution of K cumulative distribution function of the program，and generate a continuous distribution of random numbers)

Photonic crystals are attractive optical materials for controlling and manipulating the flow of light. One dimensional photonic crystals are already in widespread use in the form of thin-film optics with applications ranging from low and high reflection coatings on lenses and mirrors to colour changing paints and inks. Higher dimensional photonic crystals are of great interest for both fundamental and applied research, and the two dimensional ones are beginning to find commercial applications. The first commercial products involving two-dimensionally periodic photonic crystals are already available in the form of photonic-crystal fibers, which use a microscale structure to confine light with radically different characteristics compared to conventional optical fiber for applications in nonlinear devices and guiding exotic wavelengths. The three-dimensional counterparts are still far from commercialization but may offer additional features such as optical nonlinearity require

盲信号处理是近十几年来信号处理研究较活跃的方向，它目前在许多领域有广泛的应用。(Blind signal processing is the last decade more active signal processing research direction, it is currently in many areas have a wide range of applications.)

用于 turbo 码 log-MAP 解码的matlab源代码(log-MAP algrithm)

This paper presents a new approach to image segmentation using Pillar K-means algorithm. This segmentation method includes a new mechanism for grouping the elements of high resolution images in order to improve accuracy and reduce the computation time. The system uses K-means for image segmentation optimized by the algorithm after Pillar. The Pillar algorithm considers the placement of pillars should be located as far from each other to resist the pressure distribution of a roof, as same as the number of centroids between the data distribution. This algorithm is able to optimize the K-means clustering for image segmentation in the aspects of accuracy and computation time. This algorithm distributes all initial centroids according to the maximum cumulative distance metric. This paper evaluates the proposed approach for image segmentation by comparing with K-means clustering algorithm and Gaussian mixture model and the participation of RGB, HSV, HSL and CIELAB color spaces.

图像融合工具箱先取两幅源图像相应的小波分解系数绝对值最大者的值作为融合图像的分解系数(先取两幅源图像相应的小波分解系数绝对值最大者的值作为融合图像的分解系数)

网络平均时延的计算，通过两种算法互相验证结果(Average network delay calculation results in two mutual authentication algorithm)