DocumentCode
993181
Title
Irregular LDPC codes as concatenation regular LDPC codes
Author
Fossorier, Marc ; Miladinovic, Nenad
Author_Institution
Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA
Volume
9
Issue
7
fYear
2005
fDate
7/1/2005 12:00:00 AM
Firstpage
628
Lastpage
630
Abstract
In this letter, the construction of irregular LDPC codes obtained by concatenating regular ones is considered. These codes are analyzed for the binary symmetric channel (BSC). It is shown via proper distribution evolution that such concatenated codes have in general a threshold value weaker (but not necessarily much different) than their unconstrained counterparts for the BSC. On the other hand, they can offer advantages in term of convergence and error performance for lengths of practical interest and long enough to validate the degree distribution selection.
Keywords
concatenated codes; convergence; error correction codes; iterative decoding; parity check codes; probability; telecommunication channels; BSC; LDPC code construction; binary symmetric channel; concatenation code; convergence; error performance; iterative decoding; low density parity check code; Bipartite graph; Concatenated codes; Convergence; Error correction; Error correction codes; Iterative decoding; Parity check codes; Performance analysis; Protection; Symmetric matrices;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2005.1461686
Filename
1461686
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