A Reduced-Complexity Iterative Scheme for Decoding Quasi-Cyclic Low-Density Parity-Check Codes

被引：0
|
作者：
Lin, Shu [1 ]
Liu, Keke [1 ]
Li, Juane [1 ]
Abdel-Ghaffar, Khaled [1 ]
机构：
[1] Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA
来源：
CONFERENCE RECORD OF THE 2014 FORTY-EIGHTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS | 2014年
基金：
美国国家科学基金会;
关键词：
LDPC CODES; CONSTRUCTION; BINARY; AWGN;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This paper presents a reduced-complexity iterative decoding scheme for quasi-cyclic (QC) low-density parity-check (LDPC) codes which is devised based on the section-wise cyclic structure of their parity-check matrices. The decoding scheme significantly reduces the hardware implementation complexity of a QC-LDPC code decoder in terms of the number of message processing units and the number of wires required to connect the message processing units. A long high-rate high-performance QC-LDPC code is used to demonstrate the effectiveness of the proposed decoding scheme. Using this long code as the mother code, descendant QC-LDPC codes of various lengths and rates can be constructed by puncturing and masking the columns and rows of the parity-check matrix of the mother code. These descendant codes can be decoded by deactivating specific sets of message processing units of the mother decoder.
引用
收藏
页码：119 / 125
页数：7
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