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DPSK MATLAB 通信系统仿真 误码率 误比特率 Gray编码 译码(DPSK MATLAB simulation of communication system bit error rate BER of Gray code decoding)

Construct the short length of QC LDPC codes without girth 4 and girth 6(The Program to construct the short length of QC LDPC codes without girth 4 and girth 6 Copyright (C) Yang XIAO, Jun FAN, BJTU, July 26, 2007, E-Mail: yxiao@bjtu.edu.cn. This program presents an approach [1] for constructing the short length of LDPC codes with girth 8. First, we design 3 submatrices with different shifting functions given by our schemes, then combine them into a matrix according to our approach, finally, expand the matrix into a desired parity-check matrix using identity matrices and cyclic shift matrices of the identity matrices. The simulation results in AWGN channels show that the codes which can be obtained by the generator matrix derived from this check matrix for encoding the random information bits are as good as random LDPC codes [1]. Ref: [1] J. Fan, Y. Xiao, “A design of LDPC codes with large girth based on the sub-matrix shifting”, IET International Conference on Wireless Mobile and Multimedia Networks Proceedings (ICWMMN 2006), (CP525), p. )

说明：  这是基于MATLAB系统上开发的,应用于小波分析方面,很有用的程序模块,书名为"MATLAB在小波分析中的应用"(This is based on the MATLAB system development, application of wavelet analysis, very useful program modules, entitled )

LMS算法去除加噪声音乐程序，效果比较好，有图为证。(LMS algorithm to remove noise adding music program, the effect is better, has a license to the graph. )

《滑膜变结构控制matlab仿真》第五章( synovial VSC matlab simulation Chapter 5)

说明：  使用matlab编写的粒子群算法，可用于PID参数整定中。(PSO algorithm for PID parameter tuning)

这个说明倒不是说明函数的功能，只是声明一下函数中出现的问题。 shortest()函数没有问题，在secshortest中我希望只得到一条次短路（或几条roadcost()值相同的次短路），结果却出来好几条，我仔细检查了一下程序，应该没有什么问题。 因此在使用时，要得到次短路，只能用roadcost()函数分别求一下各条路的权重和，找到最小的。 有些奇怪 (Note that this is not the function of function, but a statement about the problems in function. shortest () function there is no problem, I hope that in secshortest only a short time (or several roadcost () times the value of the same short-circuit), the result is several out, I carefully examined the process, it should be no problem. Therefore, in use, to be at a short circuit can only be used roadcost () function, respectively, for some of the weight of the road and find the smallest. Some strange)

这本书是专门针对MatlabGUI编程的，简单易懂，里面有大量实例。(This book is designed for programming MatlabGUI, easy-to-understand, there are a large number of examples.)

采用四元数算法，来确定飞行器的姿态状况，同时通过PID方法，调节飞行器的飞行姿态。(Quaternion algorithm to determine the status of the aircraft s attitude, but by PID method, adjusting aircraft flight attitude.)

DENOISING OF ECG SIGNAL HAVING BASE LINE DRIFT