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LDPC decoding method, LDPC decoder, and storage device thereof

A decoder and decoding technology, applied in the field of LDPC codes, can solve the problems of large number of nodes, high cost and difficulty of hardware circuit implementation, and limited application range, etc., to achieve the effect of reducing hardware costs and avoiding data overflow

Pending Publication Date: 2019-02-19
APPOTECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the encoding and decoding implementation method of LDPC codes has high complexity, requires a large number of nodes, and the high cost and difficulty of hardware circuit implementation limit the scope of its application.

Method used

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  • LDPC decoding method, LDPC decoder, and storage device thereof
  • LDPC decoding method, LDPC decoder, and storage device thereof
  • LDPC decoding method, LDPC decoder, and storage device thereof

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0034] LDPC codes can be applied in various information transmission scenarios, such as channel coding of radio frequency communication channels or storage channel coding of storage devices, to improve the reliability of information transmission.

[0035] figure 1 A schematic diagram of an LDPC code provided for an embodiment of the present invention when applied to a storage device (such as a solid-state disk). Such as figure 1 As shown, the storage device includes: an information read-write interface 10 , an LDPC encoder 20 , an LDPC decoder 30 , a read-write controller 40 and several FLASH sto...

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Abstract

Embodiments of the invention provide an LDPC decoding method, an LDPC decoder, and a storage device thereof. The LDPC decoding method scales down first reliability information transmitted from the variable node to the check node, second reliability information transmitted from the check node to the variable node, and bit information of the variable node in at least one iterative cycle. The scaling operation can reduce the absolute value of the information, so that the decoder is allowed to use less bit width to achieve the goal of reducing the hardware cost of the decoder while ensuring the decoding performance.

Description

technical field [0001] The present invention relates to the technical field of LDPC codes, in particular to an LDPC decoding method, an LDPC decoder and a storage device thereof. Background technique [0002] A low-density parity-check (Low-density parity-check, LDPC) code is a good code with good performance. It is a kind of linear block code, which is encoded and decoded by a pre-constructed sparse parity check matrix, and has performance close to the Shannon limit. [0003] Although LDPC codes have great advantages in performance, especially when the code length is long. However, the implementation method of encoding and decoding of LDPC codes has high complexity, requires a large number of nodes, and the high cost and difficulty of hardware circuit implementation limit the scope of its application. [0004] In order to balance the contradiction between the implementation difficulty and decoding performance of the decoding circuit of LDPC codes, many different decoding ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/11
CPCH03M13/1105H03M13/1122H03M13/112H03M13/658H03M13/1128H03M13/118H03M13/255H03M13/616
Inventor 刘艺迪
Owner APPOTECH
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