2017
DOI: 10.1007/978-3-319-66278-7_5
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Distance Properties of Short LDPC Codes and Their Impact on the BP, ML and Near-ML Decoding Performance

Abstract: Parameters of LDPC codes, such as minimum distance, stopping distance, stopping redundancy, girth of the Tanner graph, and their influence on the frame error rate performance of the BP, ML and near-ML decoding over a BEC and an AWGN channel are studied. Both random and structured LDPC codes are considered. In particular, the BP decoding is applied to the code parity-check matrices with an increasing number of redundant rows, and the convergence of the performance to that of the ML decoding is analyzed. A compa… Show more

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Cited by 7 publications
(10 citation statements)
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“…A. [24,12,8] extended Golay code Consider the [24,12,8] extended Golay code. We use the systematic double-circulant matrix H given in [20, p. 65] as a means to define the code (see Table II).…”
Section: Numerical Resultsmentioning
confidence: 99%
See 1 more Smart Citation
“…A. [24,12,8] extended Golay code Consider the [24,12,8] extended Golay code. We use the systematic double-circulant matrix H given in [20, p. 65] as a means to define the code (see Table II).…”
Section: Numerical Resultsmentioning
confidence: 99%
“…In this work, we only show consistency of the obtained numerical results and the theoretical bounds. However, our experiments with short to moderate length codes [24], [25] show that decoding with redundant parity-check matrices can be a practical near-ML decoding technique in some cases.…”
Section: Case Study: Standard Random Ensemblementioning
confidence: 99%
“…The minimum distance of algebraic LDPC codes is usually higher than random LDPC codes [15]. The minimum distance of regular LDPC codes approaches the distance of the best random linear codes [16]. Therefore, the minimum distance of the classical (i. e. irregular) LDPC codes is low.…”
Section: Literature Review and Problem Statementmentioning
confidence: 99%
“…New positions z 13 and z 17 fall into the left check window, and positions z 16 and z 20 fall into the right check window at the third iteration. There are new positions added in both extreme windows at the fourth iteration: z 25 andz 8 .…”
Section: Algorithm For Determination Of Error-correcting Capabilitiesmentioning
confidence: 99%
“…Low-complexity suboptimal decoding techniques for LDPC codes over the BEC are based on the following two approaches. The first approach consists of adding redundant rows to the original code parity-check matrix (see, for example, [18]- [20]). The second approach applies post-processing in case of BP decoding failure [21]- [24].…”
Section: Introductionmentioning
confidence: 99%