Title :
Enhanced decoding by error detection on a channel with correlated 2-dimensional errors
Author :
Ellingsen, Pål ; Ytrehus, Oyvind ; Siege, Paul
Author_Institution :
Selmer Center, Bergen Univ., Norway
Abstract :
We apply principles from digital image correction to enhance the correction of two-dimensionally correlated unidirectional errors on a two-dimensional grid system. A restoration technique presented in Neifield et al. (1996) based on Markov random fields, is used to find an estimate of the error pattern. This estimate then in turn provides a priori information for use in a soft decoder for the actual code (e.g. LDPC decoder).
Keywords :
Markov processes; channel coding; decoding; error correction codes; error detection codes; parity check codes; LDPC decoder; Markov random fields; channel coding; correlated 2-dimensional errors; decoding; error correction; error detection; error pattern estimate; restoration technique; soft decoder; two-dimensional grid system; two-dimensionally correlated unidirectional errors; Decoding; Electronic mail; Error correction; Graphics; Lattices; Markov random fields; Parity check codes;
Conference_Titel :
Information Theory Workshop, 2004. IEEE
Print_ISBN :
0-7803-8720-1
DOI :
10.1109/ITW.2004.1405267
