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Method and device for constructing LDPC (Low Density Parity Check) code

A technology of LDPC code and construction method, applied in the field of communication, can solve problems such as large storage capacity, and achieve the effect of reducing storage capacity

Active Publication Date: 2018-10-09
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0012] The object of the present invention is to provide a kind of LDPC code construction method and device, to solve the problem that existing LDPC code has larger storage capacity in order to adapt to different information bit lengths and multiple code rates

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  • Method and device for constructing LDPC (Low Density Parity Check) code

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Embodiment Construction

[0061] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.

[0062] Aiming at the problem that the existing LDPC codes have large storage capacity for adapting to different information bit lengths and multiple code rates, the present invention provides an LDPC code construction method, which can be used for different information bit lengths and multiple code rates. The construction of the LDPC code is realized through the set of cyclic coefficients, which reduces the storage capacity.

[0063] Such as figure 1 As shown, a kind of LDPC code construction method of the embodiment of the present invention comprises:

[0064] Step 101, obtaining the cyclic coefficient set of the LDPC code;

[0065] Step 102, according to the cyclic coefficient set and the information bit length of the data to be transmitted, obtain a...

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Abstract

The invention provides a method and device for constructing an LDPC (Low Density Parity Check) code, and relates to the field of communication technologies. The method comprises the steps of obtaininga circulation coefficient set of the LDPC code; obtaining a specific circulation coefficient set corresponding to data to be transmitted according to the circulation coefficient set and the information bit length of the data to be transmitted, wherein each element in the specific circulation coefficient set is less than an extension factor corresponding to the data to be transmitted; obtaining abasis matrix corresponding to all bit rates; determining a matrix to be extended corresponding to the data to be transmitted according to the basis matrix and the specific circulation coefficient set;and extending the matrix to be extended according to the extension factor to obtain a check matrix of the data to be transmitted so as to complete the construction of the LDPC code. The scheme of theinvention solves a problem that the existing LDPC code has a large storage capacity in order to adapt to different information bit lengths and various code rates.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method and device for constructing an LDPC code. Background technique [0002] As 4G (the 4th Generation mobile communication technology, fourth-generation mobile communication technology) enters the stage of large-scale commercial use, the future-oriented fifth-generation mobile communication technology 5G (5th Generation, fifth generation) has become a global research and development hotspot. Determining a unified 5G concept and formulating a globally unified 5G standard have become the common voice of the industry. The 5G new air interface defines three typical application scenarios, eMBB (enhanced Mobile Broadband, enhanced mobile bandwidth), mMTC (massive Machine Type Communications, large connection Internet of Things) and URLLC (Ultra-Reliable and Low Latency Communications, low latency, high reliability communication). In the 5G channel error correction coding ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/11
CPCH03M13/1148
Inventor 穆锡金王加庆张冀白宝明孙韶辉
Owner DATANG MOBILE COMM EQUIP CO LTD
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