mil_188_9B_12A

说明：  Hurst exponent calculation algoritms. Time series analysis trending, mean reverting. Analysis of time series, fractal analysis.

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. )

lorenz系统的分叉研究，主研是研究稳定性的相关东西(lorenz system of bifurcation, the main research is to study something related to the stability of)

说明：  用MATLAB的神经网络工具箱实现三层BP网络(Using MATLAB)

Auto-correlation and cross-correlation - graphic version(Auto-correlation and cross-correlation- graphic version)

Filter Design using matlab

上传Matlab源代码程序，希望对下载的人有所帮助(Upload Matlab source code procedures in the hope that the right people download help)

An orifice, through which hydraulic fluid flows, has a specially shaped inlet and exit in an attempt to minimize losses. During tests the measured variations of mass flow rate q with pressure drop (p1-p2) across the orifice yield the data shown below. (a) From these data estimate the orifice loss coefficient c0 (b)plot the flow v.s. pressure drop curve with the estimated c0 to validate your estimation.

一个MIMI_OFDM系统在matlab上实现的程序代码(A MIMI_OFDM system in the matlab program code to achieve)

说明：  ma yi sparse representation classification .EXTENDED YALE B database.recognition rate 95 。(ma yi sparse representation classification. recognition rate 95 .)