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IEICE TRANSACTIONS on Communications

Design of Quasi-Cyclic Cycle LDPC Codes over GF(q)

ShuKai HU, Chao CHEN, Rong SUN, XinMei WANG

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Summary :

Quasi-cyclic (QC) low-density parity-check (LDPC) codes have several appealing properties regarding decoding, storage requirements and encoding aspects. In this paper, we focus on the QC LDPC codes over GF(q) whose parity-check matrices have fixed column weight j = 2. By investigating two subgraphs in the Tanner graphs of the corresponding base matrices, we derive two upper bounds on the minimum Hamming distance for this class of codes. In addition, a method is proposed to construct QC LDPC codes over GF(q), which have good Hamming distance distributions. Simulations show that our designed codes have good performance.

Publication
IEICE TRANSACTIONS on Communications Vol.E95-B No.3 pp.983-986
Publication Date
2012/03/01
Publicized
Online ISSN
1745-1345
DOI
10.1587/transcom.E95.B.983
Type of Manuscript
LETTER
Category
Fundamental Theories for Communications

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