Title :
Hybrid Construction of Long LDPC Codes with Very Low Density
Author :
Zhang, Lijun ; Zhang, Yanjing ; Cheng, L.L.
Author_Institution :
Sch. of Electr. & Inform. Eng., Beijing Jiaotong Univ., Beijing, China
Abstract :
By combining an algebraic method and a random method, a hybrid method is proposed to construct LDPC codes, which can easily ensure the girth is at least six. The complexity of construction for the hybrid code is only a fraction of that for PEG code, which facilitates the construction of long LDPC codes with very low density. Simulation results show that the hybrid code from EG-LDPC code and PEG code has the identical error performance and convergence rate to the PEG code with the same length.
Keywords :
algebra; parity check codes; EG-LDPC code; PEG code; algebraic method; convergence rate; error performance; hybrid code; hybrid construction; random method; very low density; Block codes; Complexity theory; Decoding; Geometry; Null space; Parity check codes; Sparse matrices;
Conference_Titel :
Vehicular Technology Conference (VTC Fall), 2012 IEEE
Conference_Location :
Quebec City, QC
Print_ISBN :
978-1-4673-1880-8
Electronic_ISBN :
1090-3038
DOI :
10.1109/VTCFall.2012.6398982
