Title :
Belief-propagation with information correction: improved near maximum-likelihood decoding of low-density parity-check codes
Author :
Varnica, N. ; Fossorier, M.
Author_Institution :
Div. of Eng. & Appl. Sci., Harvard Univ., Cambridge, MA
fDate :
June 27 2004-July 2 2004
Abstract :
We propose an improved belief-propagation (BP) decoder for low-density parity-check (LDPC) codes based on channel information correction. We show that our algorithm achieves sizeable performance gains (in waterfall and error floor regions) compared to the standard BP decoder. We verify by examples that the proposed decoder almost achieves the maximum-likelihood decoding performance for short LDPC codes
Keywords :
maximum likelihood decoding; parity check codes; LDPC; belief-propagation; channel information correction; low-density parity-check codes; maximum-likelihood decoding; AWGN channels; Bridges; Code standards; Error analysis; Iterative decoding; Maximum likelihood decoding; Parity check codes; Performance gain; Performance loss;
Conference_Titel :
Information Theory, 2004. ISIT 2004. Proceedings. International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-8280-3
DOI :
10.1109/ISIT.2004.1365380
