DocumentCode
972824
Title
On the Construction of Quasi-Systematic Block-Circulant LDPC Codes
Author
Xu, Ying ; Wei, Guo
Author_Institution
Univ. of Sci. & Technol. of China, Hefei
Volume
11
Issue
11
fYear
2007
fDate
11/1/2007 12:00:00 AM
Firstpage
886
Lastpage
888
Abstract
A class of quasi-systematic block-circulant LDPC (QSBC-LDPC) Codes is proposed. The parity-check matrix of a QSBC-LDPC code is a sparse block-circulant matrix with a quasi-systematic structure. Due to the special structure of the parity-check matrix, only limited memories, XOR computations and cyclic-shifting operations are needed in the recursive encoding process of the QSBC-LDPC codes. Simulations show that the QSBC-LDPC codes provide remarkable performance improvement with low encoding complexity.
Keywords
block codes; encoding; matrix algebra; parity check codes; recursive estimation; XOR; memories; parity-check matrix; quasi-systematic block-circulant LDPC codes; quasi-systematic structure; recursive encoding; sparse block-circulant matrix; Computational modeling; Decoding; Encoding; Information science; Lattices; Parity check codes; Sparse matrices;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2007.071022
Filename
4381377
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