TY - GEN
T1 - Limits to list decoding of insertions and deletions
AU - Wachter-Zeh, Antonia
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/8/9
Y1 - 2017/8/9
N2 - List decoding of insertions and deletions in the Levenshtein metric is considered. In this paper, a Johnson-like upper bound on the maximum list size when decoding in the Levenshtein metric is derived. This bound depends only on the length and minimum Levenshtein distance of the code, the length of the received word, and the alphabet size. It shows that polynomial-time list decoding beyond half the Levenshtein distance is possible for many parameters. For example, list decoding of two insertions/deletions with the well-known Varshamov-Tenengolts (VT) codes is feasible. Further, we also show a lower bound on list decoding VT codes and an efficient list decoding algorithm for two insertions/deletions with VT codes.
AB - List decoding of insertions and deletions in the Levenshtein metric is considered. In this paper, a Johnson-like upper bound on the maximum list size when decoding in the Levenshtein metric is derived. This bound depends only on the length and minimum Levenshtein distance of the code, the length of the received word, and the alphabet size. It shows that polynomial-time list decoding beyond half the Levenshtein distance is possible for many parameters. For example, list decoding of two insertions/deletions with the well-known Varshamov-Tenengolts (VT) codes is feasible. Further, we also show a lower bound on list decoding VT codes and an efficient list decoding algorithm for two insertions/deletions with VT codes.
KW - Deletions
KW - Insertions
KW - Levenshtein metric
KW - List decoding
KW - Varshamov-Tenengolts (VT) codes
UR - http://www.scopus.com/inward/record.url?scp=85034033016&partnerID=8YFLogxK
U2 - 10.1109/ISIT.2017.8006869
DO - 10.1109/ISIT.2017.8006869
M3 - Conference contribution
AN - SCOPUS:85034033016
T3 - IEEE International Symposium on Information Theory - Proceedings
SP - 1948
EP - 1952
BT - 2017 IEEE International Symposium on Information Theory, ISIT 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 IEEE International Symposium on Information Theory, ISIT 2017
Y2 - 25 June 2017 through 30 June 2017
ER -