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Journal Article Offset and Normalized Min-Sum Algorithms for ATSC 3.0 LDPC Decoder
Cited 43 time in scopus Share share facebook twitter linkedin kakaostory
Authors
Seho Myung, Sung-Ik Park, Kyung-Joong Kim, Jae-Young Lee, Sunhyoung Kwon, Jeongchang Kim
Issue Date
2017-12
Citation
IEEE Transactions on Broadcasting, v.63, no.4, pp.734-739
ISSN
0018-9316
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/TBC.2017.2686011
Abstract
Offset min-sum algorithm (OMSA) and normalized min-sum algorithm (NMSA) are widely used in commercial LDPC decoders due to low complexity and reasonable performance. In this paper, we provide optimized offset and scaling values for those LDPC decoders based on Advanced Television Systems Committee (ATSC) 3.0 LDPC codes. Furthermore, according to extensive computer simulations, it is shown that the performance of the OMSA and NMSA with the obtained values is close to that of sum-product algorithm, even though the NMSA-based decoder may show a serious error floor due to a channel mismatch effect. Consequently, we recommend that the ATSC 3.0 transmitters use a concatenation of BCH outer code and LDPC inner code as channel coding, considering the use of NMSA for LDPC decoder in ATSC 3.0 receivers.
KSP Keywords
ATSC 3.0, Advanced television systems committee(ATSC), Channel Coding, Computer simulation(MC and MD), Error floor, LDPC Codes, LDPC Decoder, Low complexity, Min-Sum Algorithm(MSA), Mismatch effect, Sum-product Algorithm