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Low density parity check code (LDPC) construction method and device

An LDPC code, low-density parity technology, applied in the field of wireless communication, can solve the problems of high implementation complexity and poor performance of LDPC codes

Inactive Publication Date: 2018-07-17
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention provides a method and device for constructing LDPC codes, which are used to solve the problems of poor performance and high implementation complexity in constructing LDPC codes in the prior art

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  • Low density parity check code (LDPC) construction method and device
  • Low density parity check code (LDPC) construction method and device
  • Low density parity check code (LDPC) construction method and device

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Embodiment Construction

[0048] In order to adopt a simple method to construct an LDPC code with excellent performance, an embodiment of the present invention provides a method and device for constructing an LDPC code.

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0050] figure 1 A schematic diagram of a LDPC code construction process provided by the embodiment of the present invention, the process includes the following steps:

[0051] S101: Determine a generation factor of a cyclic coefficient matrix according to an information b...

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Abstract

The invention discloses a low density parity check code (LDPC) construction method and device and is used for solving the problem that in the prior art, the performance is low and the realization complexity is high when LDPCs are constructed. The method comprises the steps of determining a production factor of a circulation coefficient matrix according to an information bit length of to-be-constructed LDPCs and a first preset coefficient; determining a value of each element in the circulation coefficient matrix according to the production factor and preset lines and columns of the circulationcoefficient matrix, and determining the value of each element in a basis matrix according to the determined circulation coefficient matrix; and determining a main check matrix according to the value of each element in the basis matrix, obtaining an LDPC integrated check matrix according to an auxiliary check matrix and the main check matrix, extracting a check matrix of the LDPCs from the LDPC integrated check matrix according to a bit rate of the LDPCs, and obtaining the LDPCs. According to the LDPCs constructed by the embodiment of the invention, the performance is high and the realization complexity is low.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a low density parity check (Low Density Parity Check Code, LDPC) code construction method and device. Background technique [0002] As 4G enters the stage of large-scale commercial use, the future-oriented fifth-generation mobile communication (5G) has become a global research and development hotspot. With the joint efforts of the global industry and academia, the 5G vision and key capability requirements have been basically clarified, and the formulation of international standards has officially started. Channel coding technology is one of the key physical layer technologies of 5G. LDPC codes have the advantages of excellent performance, high throughput, and low complexity. The international standardization organization 3GPP has determined that LDPC codes should be used for data channels in enhanced mobile broadband (eMBB) scenarios in 5G. [0003] At pre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/11
CPCH03M13/1148
Inventor 穆锡金王加庆白宝明孙韶辉
Owner CHINA ACAD OF TELECOMM TECH