Title :
Semi-random construction of quasi-cyclic LDPC codes
Author :
Lin, Dengsheng ; Qiang Li ; Li, Shaoqian
Author_Institution :
Coll. of Commun. & Inf., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
This paper presents a semi-random construction of quasi-cyclic LDPC codes, namely, the base incidence vectors are generated by computer search, and then the remainder incidence vectors are obtained by cyclically shifting these base incidence vectors. It is more flexible to construct QC-LDPC than pure geometric or algebraic methods. The simulation results demonstrate that QC-LDPC codes based on this method work quite well.
Keywords :
cyclic codes; parity check codes; random codes; QC-LDPC codes; base incidence vectors; computer search; quasi-cyclic LDPC codes; remainder incidence vectors; semi-random construction; Block codes; Combinatorial mathematics; Computational modeling; Degradation; Educational institutions; Geometry; Parity check codes; Sparse matrices; Sum product algorithm; Turbo codes;
Conference_Titel :
Communications, Circuits and Systems, 2005. Proceedings. 2005 International Conference on
Print_ISBN :
0-7803-9015-6
DOI :
10.1109/ICCCAS.2005.1493351
