Title :
An Efficient Girth-Locating Algorithm for Quasi-Cyclic LDPC Codes
Author :
Wu, Xiaofu ; You, Xiaohu ; Zhao, Chunming
Author_Institution :
Lab. of Nat. Mobile Commun. Res., Southeast Univ., Nanjing
Abstract :
The parity-check matrix of a quasi-cyclic code can be represented by a polynomial parity-check matrix with a significantly lower dimension. By using this compact representation, we can develop an efficient method for locating the girth of the quasi-cyclic code. The proposed girth-locating algorithm can be well employed to generate quasi-cyclic low-density parity-check codes with large girth
Keywords :
matrix algebra; parity check codes; girth-locating algorithm; low-density parity-check codes; parity-check matrix; quasi-cyclic LDPC codes; Bipartite graph; Circuits; Encoding; Hardware; Iterative decoding; Mobile communication; Parity check codes; Performance loss; Quantum cascade lasers; Symmetric matrices;
Conference_Titel :
Information Theory, 2006 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
1-4244-0505-X
Electronic_ISBN :
1-4244-0504-1
DOI :
10.1109/ISIT.2006.261727
