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LDPC decoding method, device and equipment and storage medium

A decoding and algorithm technology, applied in the fields of devices, LDPC decoding methods, equipment and storage media, can solve the problem of high complexity, and achieve the effect of low complexity, universality and practicability

Active Publication Date: 2020-12-04
SOUTHWEST JIAOTONG UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

Existing technology mainly has the problem of high complexity

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  • LDPC decoding method, device and equipment and storage medium
  • LDPC decoding method, device and equipment and storage medium
  • LDPC decoding method, device and equipment and storage medium

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Embodiment Construction

[0024] In order to enable those skilled in the art to better understand the technical solutions in this specification, the technical solutions in the embodiments of this specification will be clearly and completely described below in conjunction with the drawings in the embodiments of this specification. Obviously, the described The embodiments are only some of the embodiments in this specification, not all of them. Based on the embodiments in this specification, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of this specification.

[0025] Such as figure 1 As shown, in some embodiments of this specification, a kind of LDPC decoding method is provided, and this method comprises the following steps:

[0026] S102. Classify and obtain the verification nodes and ordinary verification nodes that do not meet the verification relationship in the main trapping set; set super verification nodes, a...

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Abstract

The invention discloses an LDPC (Low Density Parity Check) decoding method, device and equipment and a storage medium. The method comprises the following steps of: classifying and acquiring check nodes and common check nodes which do not meet a check relationship in a main trapping set; setting a super check node, which is formed by combining check nodes which do not meet the check relationship inthe main trapping set; acquiring a log-likelihood ratio in the channel; performing hard decision based on the log-likelihood ratio in the channel and the calculation results of BP algorithm, BCJR algorithm and BCJR-TS algorithm; acquiring a result of the hard decision; setting a check equation; and judging whether a decoding result is correct or not based on the result of the hard decision and the check equation, and ending decoding when the decoding result is correct. Compared with an existing low-error floor decoding method, the method provided by the invention has lower complexity, is implemented at a receiving end, has no constraint on a codebook and encoding, and has higher universality and practicability.

Description

technical field [0001] This specification relates to the field of decoding, in particular to an LDPC decoding method, device, device and storage medium. Background technique [0002] Low-density parity check code, that is, LDPC code (Low-density Parity-check) is a progressive good code that can approach Shannon's capacity limit, because low-density check code has low decoding complexity, strong error correction ability, etc. In recent years, its good application prospect in reliable information transmission has attracted great attention from academia and IT industry, and it has become one of the most attention-grabbing research hotspots in the field of channel coding today. The error floor is an important issue in the research of LDPC code theory and iterative decoding algorithm, and its characteristic is the slope of the bit error performance curve from the medium SNR waterfall region to the high SNR error floor region. Specifically, as the BER curve of LDPC code increases...

Claims

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Application Information

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IPC IPC(8): H03M13/11
CPCH03M13/1105Y02D30/70
Inventor 马征周璇
Owner SOUTHWEST JIAOTONG UNIV