Title :
Capacity Approaching Low-Rate LDGM Codes
Author :
Araújo, Francisco J Vázquez ; López, Miguel González ; Castedo, Luis ; Frias, Javier Garcia
Author_Institution :
Dept. of Electron. & Syst., Univ. of A Coruna, A Coruna, Spain
fDate :
2/1/2011 12:00:00 AM
Abstract :
We study the ability of low-rate Serially-Concatenated Low Density Generator Matrix (SCLDGM) codes to approach theoretical limits. Although two layer SCLDGM codes approach capacity for medium rates (0.25 <; R <; 0.9), they do not perform adequately for lower rates. In this case, substantial performance improvements are obtained using three layers.
Keywords :
block codes; concatenated codes; linear codes; capacity approaching codes; linear block codes; low-rate LDGM codes; serially-concatenated low density generator matrix codes; substantial performance improvements; Capacity approaching codes; EXIT function analysis; LDGM codes; low-rate codes;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2010.112310.090086
