Matlab

本论文首先介绍了当前深空通信的编码调制技术的现状与发展，阐述了以往 的深空通信中的编码和调制技术的方案和局限性，提出LDPC码和FQPSK调制的 优越性和发展前景。第二章描绘了LDPC码的奇偶校验矩阵的图形表示、生成方 式和译码方法，并比较二元LDPC码和多元LDPC码的优越性和实现问题。第三 章在介绍FQPSK调制的方案的由来、改进和发展的基础上，对其进行了功率谱分 析，介绍了一些常规的解调方案。(This paper introduces the current situation and development of the technology of deep-space communication code modulation on the coding and modulation techniques in deep space communications program and limitations of the proposed of LDPC codes FQPSK modulation superiority and development prospects. Chapter II depicts a graphical representation of the LDPC code of the parity check matrix generation method and decoding method, and compare the superiority of binary LDPC codes and multiple LDPC code and implementation problems. Chapter origin in the introduction FQPSK modulation program, improvement and development on the basis of its power spectrum analysis, conventional demodulation.)

matlab rgb2lab source code

用MATLAB编写的混沌序列图像加密程序，密钥可以从0到1之间的任何一个数，加密密钥跟解密密钥一样才能正确解密.rar(Chaotic sequence using MATLAB image encryption program, the key can be from 0 to 1 between any number of encryption keys with the correct decryption key to decrypt the same. Rar)

低复杂度信道估计仿真程序，用来降低信道估计的复杂度(Low complexity channel estimation simulation program, used to reduce the complexity of the channel estimation)

说明：  关于短波通信中多径的Matlab仿真代码(On short-wave communications in multi-path simulation of Matlab code)

clear 从内存中清除变量和函数 exit 关闭MATLAB load 从磁盘中调入数据变量 pack 合并工作内存中的碎块 quit 退出MATLAB save 把内存变量存入磁盘 who 列出工作内存中的变量名 whos 列出工作内存中的变量细节 workspace 工作内存浏览器 (There is one outlier in the data of , but is not of data .For and the line of Q2 is in the middle of the box, so there are not asymmetries for both and .)

introduction to basic image processing using matkab and basic comments

潮汐调和分析，用于海洋专业，分析各分潮潮汐调和常数。(Tidal harmonic analysis for marine professionals to analyze the sub-tidal tidal harmonic constants.)

可以产生正弦信号和白噪声时域信号波形，以及混杂噪声的正弦波波形，信噪比可调(the sinusoidal signal can be generated when the white noise domain waveform, sinusoidal waveform, and the noise mixed SNR adjustable)

此文件包含有四个基于matlab源程序,可直接运行.其说明如下 P0305：模拟图像受高斯白噪声和椒盐噪声的影响 P0306：采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤P0307：采用MATLAB中的函数filter2对受噪声干扰的图像进行均值P0308：图像的自适应魏纳滤波 (This file contains four based on the matlab source code can be directly run. Its description is as follows P0305: analog image by Gaussian white noise and salt and pepper noise P0306: A two-dimensional median filtering function medfilt2 by salt and pepper noise to the image filter P0307: the use of MATLAB in filter2 function affected by noise interference images mean P0308: Image Adaptive Weiner Filter)