DocumentCode
778494
Title
A Measure of the Girth Histogram for Improved Girth-Conditioning Construction of LDPC Codes
Author
Chen, Hua ; Cao, Zhigang
Author_Institution
Dept. of Electron. Eng., Tsinghua Univ., Beijing
Volume
11
Issue
4
fYear
2007
fDate
4/1/2007 12:00:00 AM
Firstpage
340
Lastpage
342
Abstract
In this letter, we present a general quantitative measure of the girth histogram of low-density parity-check (LDPC) codes with joint consideration of the degrees and local girths of symbol nodes. We then propose a further girth-conditioning algorithm to optimize such a measure during the construction of LDPC codes. We show by simulation results that the algorithm improves not only the performance of irregular codes at high signal-to-noise ratios (SNR) considerably, but also the rates of regular codes
Keywords
parity check codes; LDPC codes; girth histogram; girth-conditioning algorithm; low-density parity-check code; Convergence; Histograms; Iterative decoding; Parity check codes; Performance loss; Signal to noise ratio;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOM.2007.348294
Filename
4155636
Link To Document