Open AccessUIBF decoding to lower the error floors of high‐rate systematic LDPC codes
Author(s) -
Lim J.,
Shin D.J.
Publication year - 2017
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2016.2827
Subject(s) - low density parity check code , decoding methods , algorithm , code word , list decoding , computer science , redundancy (engineering) , error detection and correction , bit error rate , serial concatenated convolutional codes , mathematics , concatenated error correction code , block code , operating system
An unreliability‐based information bit flipping (UIBF) decoding using cyclic redundancy check is proposed to lower the error floors of high‐rate systematic low‐density parity‐check (LDPC) codes. Unsuccessfully decoded codeword is redecoded by the UIBF decoding with very low complexity at the end of every iteration of the sum–product (SP) decoding. The proposed scheme is applied to LDPC codes of the IEEE 802.16e standard. Simulation results show that the proposed scheme effectively lowers the error floors of systematic LDPC codes with smaller number of iterations compared with the conventional SP decoding scheme, which leads to the reduced power consumption and increased data throughput.