A class of QC-LDPC codes with low encoding complexity and good error performance

Wai M. Tam; Chung Ming Lau; Chi Kong Tse

doi:10.1109/LCOMM.2010.02.091930

A class of QC-LDPC codes with low encoding complexity and good error performance

Wai M. Tam, Chung Ming Lau, Chi Kong Tse

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

43 Citations (Scopus)

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.

Original language	English
Article number	5403623
Pages (from-to)	169-171
Number of pages	3
Journal	IEEE Communications Letters
Volume	14
Issue number	2
DOIs	https://doi.org/10.1109/LCOMM.2010.02.091930
Publication status	Published - 1 Feb 2010

Keywords

Approximate lower triangular structure
Encoding complexity
QC low-density-parity-check (LDPC) codes

ASJC Scopus subject areas

Electrical and Electronic Engineering
Computer Science Applications
Modelling and Simulation

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10.1109/LCOMM.2010.02.091930

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A class of QC-LDPC codes with low encoding complexity and good error performance

Abstract

Keywords

ASJC Scopus subject areas

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