Title :
A simple one-sweep algorithm for optimal APP symbol decoding of linear block codes
Author :
Johansson, Thomas ; Zigangirov, Kamil
Author_Institution :
Dept. of Inf. Technol., Lund Univ., Sweden
fDate :
11/1/1998 12:00:00 AM
Abstract :
Soft-input/soft-output symbol decoding plays a significant role in iterative decoding. We propose a simple optimal soft-input/soft-output symbol decoding algorithm for linear block codes which requires one forward recursion using a trellis. For many codes the decoding complexity is lower than previous methods, such as the algorithm by Bahl et al. (1974), and the decrease is shown at its most when decoding Hamming codes
Keywords :
Hamming codes; block codes; iterative decoding; linear codes; optimisation; trellis codes; Hamming codes; decoding complexity; iterative decoding; linear block codes; one forward recursion; optimal APP symbol decoding; simple one-sweep algorithm; soft-input/soft-output symbol decoding; trellis; Bit error rate; Block codes; Communication systems; Convolutional codes; Feedback; Feeds; Information technology; Iterative algorithms; Iterative decoding; Viterbi algorithm;
Journal_Title :
Information Theory, IEEE Transactions on
