PLS_Toolbox21

这是一个粒子群算法（pso）的MATLAB源程序(This is a particle swarm optimization (pso) the MATLAB source code)

说明：  matlab编程的中文版，非常珍贵的电子书！(Chinese version of matlab programming, e-books are very precious!)

This is the code for spatial model

在加性高斯白噪声信道里，BPSK调制信号与MPSK调制信号的比较(in the awgn channel , bpsk system vs mpsk)

这个仿真程序用于实现DS-CDMA通信系统仿真(The simulation program used to implement DS-CDMA Communication System Simulation)

灰色预测程序，可实现简单的二维数据的预测，简单方便实用(Grey procedures, can be a simple two-dimensional data projections, simple and practical)

说明：  线性系统理论，用龙格库塔法求解，极点配置(Theory of linear system)

用于生成matlab校验矩阵,根据数字电视地面广播标准，可以试一下(it is use to be generate the ldpc encode)

包括：隐藏混沌序列即隐藏参数的生成；对图像进行隐藏；恢复出隐藏前置乱的目标图像；恢复出原目标图像；对隐藏目标置乱处理等(Include: hidden chaotic sequence that is hidden parameter generation images hidden the restoration of a hidden goal of arbitrary pre-image the restoration of the original target image to hide the goal of treatment, such as scrambling)

DCT and Image Compression In the JPEG image compression algorithm, the input image is divided into 8-by-8 or 16-by-16 blocks, and the two-dimensional DCT is computed for each block. The DCT coefficients are then quantized, coded, and transmitted. The JPEG receiver (or JPEG file reader) decodes the quantized DCT coefficients, computes the inverse two-dimensional DCT of each block, and then puts the blocks back together into a single image. For typical images, many of the DCT coefficients have values close to zero these coefficients can be discarded without seriously affecting the quality of the reconstructed image. The example code below computes the two-dimensional DCT of 8-by-8 blocks in the input image, discards (sets to zero) all but 10 of the 64 DCT coefficients in each block, and then reconstructs the image using the two-dimensional inverse DCT of each block. The transform matrix computation method is used.