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A Survey on Trapping Sets and Stopping Sets. (arXiv:1705.05996v1 [cs.IT])
来源于:arXiv
LDPC codes are used in many applications, however, their error correcting
capabilities are limited by the presence of stopping sets and trapping sets.
Trapping sets and stopping sets occur when specific low-wiehgt error patterns
cause a decoder to fail. Trapping sets were first discovered with investigation
of the error floor of the Margulis code. Possible solutions are constructions
which avoid creating trapping sets, such as progressive edge growth (PEG), or
methods which remove trapping sets from existing constructions, such as graph
covers. This survey examines trapping sets and stopping sets in LDPC codes over
channels such as BSC, BEC and AWGNC. 查看全文>>