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 Example Parity Check Method Coding 

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Copyright (C2010-2013) Yang XIAO, BJTU, April 16, 2010, E-Mail: yxiao@bjtu.edu.cn.
This program can produce the Parity Check Matrices of DVBS2 codes, while Ref. [1] remindes you that these codes are not good as the LDPC codes IEEE802.16e for continuous bits' errors.
Refenrences:
[1] X. Huang, Y. Xiao, J. Fan and K. Kim, Girth 4 and low minimum weights' problems of LDPC codes in DVB-S2 and solutions,
Proceedings of the...



In my following book, I derived the algorithm of constructing the parity check matrices of IEEE 802.16e LDPC.
[1] Y. Xiao, Turbo and LDPC Codecs and their Applications, Press of Posts and Telecommunications, Beijing, 2010.
This program...



The zip file contains
1. A 128x256 Regular (3,6) H matrix (if you need to simulate other codes, need to write your own code for generating those parity check matrices). The file '128x256regular_v6.mat' is for those using Matlab 6.5.
2....



The program can produce the parity check matrix of DVB-S2 LDPC with the size 8100*4050, and 1/2 code rate.
Copyright (C) Yang XIAO, Beijing Jiaotong University, June 22, 2010, E-Mail: yxiao@bjtu.edu.cn.
Current Version Published:...



The program can simulate fast Tanner LDPC codec with quasi-circular generator matrices, and 1/2 code rate.
Copyright (C2010-2015) Yang XIAO, Beijing Jiaotong University, Nov.3, 2010, E-Mail: yxiao@bjtu.edu.cn.
Current Version...



The program constructs girth-six QC-LDPC codes given row-weight,k, column-weight,j, and sub-matrix size,m. The obtained parity-check matrix is stored in H. The construction has flexibility in that j,k and m can be varied.The program achieves...



We found that the generator matrix in Fig.6-2 to be wrong, Bi,j's are not circulant. You can not derive circulant Bi,j's from the parity check matrix in Fig.6-1.

There are two vital problems in the LDPC codes of CCSDS 131.0-P-1.1:
...



The Eclipse Checkstyle plug-in integrates the Checkstyle Java code auditor into the Eclipse IDE. The plug-in provides real-time feedback to the user about violations of rules that check for coding style and possible error prone code constructs.



CHAPTER 1: FOURIER ANALYSIS
1.1 CONTINUOUS-TIME FOURIER SERIES (CTFS)
1.2 PROPERTIES OF CTFS
1.2.1 Time-Shifting Property
1.2.2 Frequency-Shifting Property
1.2.3 Modulation Property
1.3 CONTINUOUS-TIME FOURIER...



Recently, we find some published programs for the construction of LDPC codes have not concerned the Girth test problem, which will not the implementation of LDPC Codec to have good decoding BER. Thus, we publish a simple program to provide a tool...



The program constructs girth-8 type II qc-ldpc codes given Base matrix, size of sub-matrix and row and columns weights. The base matrix, weights and size of sub-matrices are all variable. The program uses a search algorithm which might fail to...



The Program to test the girth 4 of Gallager LDPC codes
Copyright (C) Yang XIAO, BJTU, July 26, 2007, E-Mail: yxiao@bjtu.edu.cn,
The program analyzes the girth 4 for Gallager LDPC codes. The figures show
the parity check matrix H and...



This plugin will track all comments you make on other blogs and download them back to your own site. You can then display these comments as a paginated listing, install a widget, or automatically create daily/weekly digest posts.

The...



SOAP Client provide a wrapper and simple unified API to the NuSOAP and PHP5 SOAP extension and allow the other modules to access SOAP-based web services on any servers on the internet.

Note:
Soap Client module no longer includes...



The TXT Report components enable to create report printouts that are suitable for matrix printers, and to manage the operation of matrix printers in the Windows environment. The TXT Report components are useful whenever there is the need to use a...



[dec_cod, code_bin, code_book] = lempel_ziv(alf, str)

It's a function with three output variables and two input variables.
'dec_cod' is the decimal code that codify the input string 'str'.
'code_bin' is the binary code of the...



The Plugin Places a Icon Bar (like the 'Share This' Button or the 'Add To Any' Icon Bar) on your website (via the options page). When someone clicks the Icon Bar, a Bubble 'Pops' and displays link to social media/bookmarking sites. The links...



C4F Textarea Toolbar is a plugin for WordPress aimed at providing a simple yet very useful and precise tool to insert emoticons and markup in the comments' textarea. The javascript code used has been written to specifically address most (if not...



This Matlab program Solve N-equation with Gauss elimination method and check results with Matlab Function.



Rextra is lib that adds some conveniences to Ruby coding. A collection of some very useful methods and classes to help writing small scripts or large libs. There is some fun stuff in here, check it out!