Design of Time-Invariant SC-LDPC Codes Based on PEG Algorithm
Xiang-Yi Shi, Danfeng Zhao, Hai Tian, Tongzhou Han · 2020
In order to meet the reliability requirements of 6G mobile communication, this paper proposes a method of constructing time-invariant spatially coupled low-density parity-check (SC-LDPC) codes based on the progressive edge growth (PEG) algorithm. The base matrix for coupling is constructed by the PEG algorithm. We design a new coupling algorithm by constraining the coupling edges, and use circular permutation matrix (CPM) algorithm to eliminate 4-cycles and reduce the number of 6-cycles. Compared to 5G NR LDPC codes, simulation results show the design has obvious coding gain over AWGN channel.