mani

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. )

M_sequence Generator

a file i uploaded, if you want more, come and get it

image sharpening with psnr value

关于合成孔径雷达信号的基础知识和如何进行线性调频脉冲信号的压缩及其matlab源码。(Synthetic aperture radar signal on the basis of knowledge and how to carry out a linear FM pulse compression and the matlab source code.)

XGM SOA model for semiconductor optical amplifier

This file is a demonstration module containing a number of configfs subsystems.

精通matlab6.5电子书后附带光盘中计算书中算例的程序源码(Proficient matlab6.5 calculation included CD-ROM e-book after book, examples of program source code)

数学建模第十三讲，matlab插值的相关代码(Mathematical modeling the newsboy model courseware, the code)

阵列信号处理中MUSIC算法估计DOA,MUSIC算法是一种基于矩阵特征空间分解的方法。从几何角度讲，信号处理的观测空间可以分解为信号子空间和噪声子空间，显然这两个空间是正交的。(Array signal processing MUSIC algorithm for DOA estimation,MUSIC algorithm is a method of feature space based on matrix decomposition. From the geometric point of view, can be observed spatial signal processing decomposition into the signal and noise subspaces, obviously these two spaces is orthogonal.)