yuanchengxu

可以产生混合高斯信号信号的函数。自己可以调节混合信号的峭度。(Can produce mixed-Gaussian signal function. You can adjust the mixed signal kurtosis.)

直接将秘密图像的高4bit隐藏在RGB载体图像的R,G,B层中所选的那一层的低4bit,并将秘密图像提取出来，最后显示。要求载体图像的大小大于等于秘密图像的大小，且秘密图像是二值或灰度图像(Directly to the secret image hidden in the high-4bit RGB vector images R, G, B layer, then a layer of selected low 4bit, and extracted secret image, the final show. Required size of the image carrier is greater than equal to the size of the secret image, and the secret image is a binary or gray image)

使用harris方法提取特征点，并保存特征点坐标(To extracted feature points use harris, and save the coordinates of the feature points)

利用Matlab对通信系统仿真的基本思想和方法； 利用MATLAB的集成仿真环境Simulink对双边带幅度调制系统进行仿真 (Matlab simulation of communication systems using the basic ideas and methods integrated simulation environment using MATLAB Simulink bilateral system is simulated with amplitude modulation )

说明：  包括模糊聚类分析数据各种标准化变换、模糊聚类分析建立模糊相似矩阵的各种方法(Fuzzy Cluster Analysis, including a variety of standardized data transformation, fuzzy cluster analysis to establish fuzzy similar matrix of the various methods)

说明：  莱斯利人口预测模型 莱斯利矩阵为91阶方针表示从0岁到90岁各个年龄段的生育率和存活率集合(leslie )

This M Code simulate the effects of clipping and filtering on PAPR PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel is evaluated. The simplest and most widely used technique of PAPR reduction is to basically clip the part of signals that are outside the allowed region.Clipping methode introduces both in band distortion and out of band radiation into OFDM signals which degrades the performance including the BER and spectral efficiency.Filtering can reduce out of band radiation after clipping although it can not reduce in-band radiation distortion.However, clipping may cause some peak regrowth so that the signal after clipping and filtering will exceed the clipping level at some point.To reduce peak regrowth a repeated filtering and clipping operation can be used to obtain a desirable PAPR at a cost of computational complexity increase.

基于matlab/simulink的反激变换器仿真(Based on matlab/simulink simulation flyback converter)

说明：  采用粒子群算法对单时段的机组组合进行寻优。(Particle swarm optimization (PSO) is used to optimize unit commitment in a single period of time.)

光伏并网发电系统有源频率漂移孤岛检测法(AFD)(active frequency drift(AFD) island detection method of photovotaic grid-connected generation system)