DocumentCode
1370575
Title
On the equivalence between SOVA and max-log-MAP decodings
Author
Fossorier, Marc P C ; Burkert, Frank ; Lin, Shu ; Hagenauer, Joachim
Author_Institution
Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA
Volume
2
Issue
5
fYear
1998
fDate
5/1/1998 12:00:00 AM
Firstpage
137
Lastpage
139
Abstract
It is shown that after a proper simple modification, the soft-output Viterbi algorithm (SOVA) proposed by Hagenauer and Hoeher (1989) becomes equivalent to the max-log-maximum a posteriori (MAP) decoding algorithm. Consequently, this modified SOVA allows to implement the max-log-MAP decoding algorithm by simply adjusting the conventional Viterbi algorithm. Hence, it provides an attractive solution to achieve low-complexity near-optimum soft-input soft-output decoding.
Keywords
Viterbi decoding; maximum likelihood decoding; SOVA; low-complexity near-optimum decoding; max-log-MAP decoding algorithm; soft-output Viterbi algorithm; AWGN; Concatenated codes; Cost function; Degradation; Error probability; Iterative algorithms; Iterative decoding; Linear code; Vectors; Viterbi algorithm;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/4234.673659
Filename
673659
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