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Check matrix construction method, check matrix construction equipment, encoding and decoding method and encoding and decoding equipment

A technology of a check matrix and an encoding method, which is applied in the fields of encoding and decoding methods and equipment, and a check matrix construction method and equipment, can solve the problems of reducing decoding performance and affecting the decoding process of the decoding end, and achieve the effect of improving decoding performance.

Active Publication Date: 2015-01-21
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In the prior art, the pre-punched nodes are randomly selected, and the columns containing more "1" elements in the LDPC check matrix may be selected as the pre-punched nodes. When a higher code rate is used for transmission , the number of pre-punched nodes will be more, so the "1" elements of the LDPC check matrix loss will be more, thus affecting the decoding process of the decoding end, thereby reducing the decoding performance

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  • Check matrix construction method, check matrix construction equipment, encoding and decoding method and encoding and decoding equipment
  • Check matrix construction method, check matrix construction equipment, encoding and decoding method and encoding and decoding equipment
  • Check matrix construction method, check matrix construction equipment, encoding and decoding method and encoding and decoding equipment

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Embodiment Construction

[0028] Embodiments of the present invention provide a check matrix construction method and device, and an encoding and decoding method and device, which can improve decoding performance.

[0029] see figure 1 , the LDPC check matrix construction method in the embodiment of the present invention includes:

[0030] 101. Obtain the adjacency matrix of the LDPC prototype graph;

[0031] In this embodiment, before constructing the LDPC check matrix, the LDPC prototype graph adjacency matrix can be obtained first, and the LDPC prototype graph adjacency matrix can specifically be as follows figure 2 Shown:

[0032] The LDPC prototype graph adjacency matrix includes sub-matrices a, b, t, c, d and 0 matrix;

[0033] Sub-matrix a is a matrix of m2×k; sub-matrix b is a matrix of m2×m1; sub-matrix t is a matrix of m2×m2; sub-matrix c is a matrix of m1×k; sub-matrix d is a matrix of m1×m1; 0 matrix is ​​a matrix of m1×m2;

[0034] The starting row of the sub-matrix d and the starting...

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Abstract

An embodiment of the invention discloses a check matrix construction method, check matrix construction equipment, an encoding and decoding method and encoding and decoding equipment, which are used for improving decoding performance. The encoding method includes: receiving an information sequence; encoding the information sequence by a low-density parity check (LDPC) matrix to obtain an encoded check sequence; perforating the check sequence; and generating code words according to the information sequence and the perforating results. The LDPC matrix is acquired from an LDPC prototyping diagram adjacency matrix. The check matrix construction method, the check matrix construction equipment, the encoding and decoding method and the encoding and decoding equipment are capable of improving decoding performance effectively and simplifying encoding process.

Description

technical field [0001] The present invention relates to the communication field, in particular to a check matrix construction method and equipment, and an encoding and decoding method and equipment. Background technique [0002] Low Density Parity Check (LDPC, Low Density Parity Check) code has the characteristics of excellent error correction performance, high decoding throughput, simple decoding, etc., so it has become a research hotspot in the field of channel coding and decoding, and LDPC code and hybrid automatic retransmission The combination of HARQ (Hybrid Automatic Repeat reQuest) technology is one of the current research focuses in this field. [0003] In mobile communication systems, HARQ is almost a necessary technology. This requires that the constructed LDPC code should not only have excellent error correction performance, but also have good code rate compatibility. When it is necessary to reduce the code rate, it can be realized by extension; accomplish. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H03M13/11
Inventor 金光淳边日茂魏岳军金莹
Owner HUAWEI TECH CO LTD