DocumentCode
1400582
Title
A class of QC-LDPC codes with low encoding complexity and good error performance
Author
Tam, Wai M. ; Lau, Francis C M ; Tse, Chi K.
Author_Institution
Dept. of Electron. & Inf. Eng., Hong Kong Polytech. Univ., Hong Kong, China
Volume
14
Issue
2
fYear
2010
fDate
2/1/2010 12:00:00 AM
Firstpage
169
Lastpage
171
Abstract
We propose a novel approximate lower triangular structure for the parity part of the parity-check matrix of QC-LDPC codes. About half of the non-zero elements in the parity part are set to locate on the upper diagonal while the remaining non-zero elements can be located almost anywhere within the lower triangular area, provided certain rules are observed. Compared with the typical dual-diagonal structure, the proposed structure requires very similar encoding complexity and produces lower error rates over an AWGN channel.
Keywords
AWGN channels; parity check codes; AWGN channel; QC LDPC codes; QC low density parity check codes; approximate lower triangular structure; encoding complexity; AWGN channels; Decoding; Encoding; Error analysis; Parity check codes; Senior members; Shift registers; Wireless communication; Approximate lower triangular structure, encoding complexity, QC low-density-parity-check (LDPC) codes;
fLanguage
English
Journal_Title
Communications Letters, IEEE
Publisher
ieee
ISSN
1089-7798
Type
jour
DOI
10.1109/LCOMM.2010.02.091930
Filename
5403623
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