Open AccessTrellis‐Based Decoding of High‐Dimensional Block Turbo Codes
Author(s) -
Kim Sooyoung,
Yang Wbo Seok,
Lee HoJin
Publication year - 2003
Publication title -
etri journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 46
eISSN - 2233-7326
pISSN - 1225-6463
DOI - 10.4218/etrij.03.0103.0115
Subject(s) - decoding methods , soft output viterbi algorithm , viterbi decoder , turbo code , iterative viterbi decoding , computer science , trellis (graph) , algorithm , viterbi algorithm , sequential decoding , convolutional code , turbo , reliability (semiconductor) , list decoding , block (permutation group theory) , block code , concatenated error correction code , mathematics , engineering , power (physics) , automotive engineering , physics , geometry , quantum mechanics
This paper introduces an efficient iterative decoding method for high‐dimensional block turbo codes. To improve the decoding performance, we modified the soft decision Viterbi decoding algorithm, which is a trellis‐based method. The iteration number can be significantly reduced in the soft output decoding process by applying multiple usage of extrinsic reliability information from all available axes and appropriately normalizing them. Our simulation results reveal that the proposed decoding process needs only about 30% of the iterations required to obtain the same performance with the conventional method at a bit error rate range of 10 −5 to 10 −6 .