Construction of type-Ⅱ QC-LDPC codes with a large girth based on perfect cyclic difference sets
YUAN Jianguo, LI Yuanyuan, AO Xiang, PANG Yu, LIN Jinzhao
Systems Engineering and Electronics . 2017, (11): 2587 -2591 .  DOI: 10.3969/j.issn.1001-506X.2017.11.28