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A data processing method and device

A data processing and data content technology, applied in the field of encoding and decoding, can solve problems such as time-consuming, occupying more system resources, and low decoding efficiency, and achieve the effects of improving utilization rate, high decoding efficiency, and fast decoding speed

Active Publication Date: 2019-08-09
CHENGDU FOURIER ELECTRONICS TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The inventors found that in the decoding and decoding process of the LDPC code matrix, it can only be carried out by serial decoding. If the number of codes in the LDPC code matrix is ​​large, the serial decoding method will consume a lot of time and the decoding efficiency will be improved. Low, takes up more system resources

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  • A data processing method and device
  • A data processing method and device
  • A data processing method and device

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Embodiment Construction

[0030] 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. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0031] It should be noted that like numerals and let...

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Abstract

The invention provides a data processing method and device which are used for decoding low-density parity check codes. On a data structure, the scale of a sparse matrix can be reduced by using unit sub-matrixes in a left sub-matrix under the specification of a high code rate; on data representation, a data fixed-point scheme can be adopted; on an instruction, a constant memory is used to store a check matrix, and a software pipeline is used in access to a global variable to improve the memory efficiency, and the like; on a platform, a frame-level parallelism degree can be set to increase the number of concurrent threads; and on a algorithm, a balanced hierarchical decoding processing method can be adopted. The data processing method and device provided by the invention realize quick decoding for low-density parity check codes through combining various multi-level optimization means.

Description

technical field [0001] The present invention relates to the technical field of coding and decoding, and in particular, to a data processing method and device. Background technique [0002] LDPC code is an excellent linear error correction code that is close to the Shannon limit, easy to implement and low in system complexity. It is a kind of linear block code with sparse parity check matrix proposed by Dr. Robert Gallager in 1963, LDPC code It not only has good performance close to the Shannon limit, but also has low decoding complexity and flexible structure. It is a research hotspot in the field of channel coding in recent years. At present, it has been widely used in deep space communication, optical fiber communication, satellite digital video and audio broadcasting and other fields. LDPC code has become a strong competitor of the fourth generation communication system (4G), and the coding scheme based on LDPC code has been adopted by the next generation satellite digit...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/11G06T9/00
CPCG06T9/007H03M13/118
Inventor 史伟仁戴荣吕春阴陶林峰
Owner CHENGDU FOURIER ELECTRONICS TECH