Two programmable BCH soft decoders for high rate codes with large word length
Mohamed T. A. Osman, Hossam A. H. Fahmy, Yasmine A. H. Fahmy, Maha A. Elsabrouty · 2013
In this paper, two BCH soft decoders are proposed suitable for high rate codes with medium to large word length. The proposed decoders provide a programmable performance gain, with a reduced critical path allowing for an increase upto m/2 times the operating frequency of algebraic decoders, where m is the Galois field size. Our proposed decoders operate only on the least reliable bits, which leads to a reduction in the decoder complexity by removing the Chien search procedure.