Low-density parity-check (LDPC) codes have been accepted as the standard codes for the 5th-generation New Radio (5G NR) standard. The performances of a linear block code LDPC based on the sparse matrix are extremely near to the Shannon limit. Ever since LDPC was invented, continuous encryption algorithms have been introduced, in which two more dominant ones, Quasi-cyclic (QC) LDPC and Repeat Accumulate (RA) LDPC, are referred to as the simple decoding algorithms. In this paper, the construction of the two algorithms will be analyzed, and the performances of these algorithms will be compared on the 5G standard. From there, it can be assessed when transmitting information on 5G standard, QC code will achieve better performances, but it also gets higher complexity compared to RA code . |
