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- Title
Two Extended Programmable BCH Soft Decoders Using Least Reliable Bits Reprocessing.
- Authors
Osman, Mohamed; Fahmy, Hossam; Fahmy, Yasmine; Elsabrouty, Maha; Shalash, Ahmed
- Abstract
This paper proposes two Bose-Chaudhuri-Hocquenghem (BCH) soft decoders suitable for high-rate codes with medium to large word length. The proposed decoders extend the correcting capability by providing a programmable performance gain according to the choice of the extra compensated bits p, with a theoretical maximum likelihood decoding when 2 t+ p approaches the codeword size n, where t is the correcting capability of the code under algebraic decoding. Our proposed architectures for the proposed algorithms use pipelined arithmetic units, leading to a reduction in the critical paths. This allows for an increase in the operating frequency by up to m/2 times compared to 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.
- Subjects
BCH codes; FINITE fields; ELECTRONIC decoders software; BERLEKAMP-Massey algorithm; LOW density parity check codes; HARDWARE; VERY large scale circuit integration
- Publication
Circuits, Systems & Signal Processing, 2014, Vol 33, Issue 5, p1369
- ISSN
0278-081X
- Publication type
Article
- DOI
10.1007/s00034-013-9709-x