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Method and device for hierarchical coding of LDPC codes

An LDPC code and layered coding technology, applied in the coding field, can solve the problems of large storage space and prolonged coding time, and achieve the effects of reducing storage space, reducing the amount of computation, and reducing coding delay.

Inactive Publication Date: 2012-11-28
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In view of this, the main purpose of the present invention is to provide a layered coding method and device for LDPC codes, to solve the problems that the existing LDPC coding methods require a large storage space and long coding delay

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  • Method and device for hierarchical coding of LDPC codes
  • Method and device for hierarchical coding of LDPC codes
  • Method and device for hierarchical coding of LDPC codes

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Embodiment Construction

[0039] The technical solutions of the present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments.

[0040] A kind of layered coding method of LDPC code provided by the present invention, such as figure 2 As shown, it mainly includes the following steps:

[0041] Step 201, according to the check bit matrix part H of the check matrix H p The structural features of the hierarchical operation mode determine the position information of the parity bit corresponding to the hierarchical operation mode in the LDPC code word, and the row information in H corresponding to the position information.

[0042] In the present invention, before determining the position information of the parity bit corresponding to the layered operation mode in the LDPC code word, it is necessary to initialize the LDPC code word, including initializing the information bit and the parity bit of the LDPC code word, and the parity bit The number of...

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Abstract

The invention discloses a method for hierarchical coding of low-density parity check (LDPC) codes, which comprises the following steps of: according to the structural feature of a parity bit matrix part Hp of a check matrix H, determining positional information of parity bits corresponding to a hierarchical operation mode in code words of the LDPC codes and row information corresponding to the positional information in the H; according the positional information and the corresponding row information, obtaining values of the parity bits corresponding to the positional information directly through the hierarchical operation mode, and upgrading the code words according to the obtained values of the parity bits; and executing LU decomposition on a residual check matrix Hi corresponding to the residual parity bits to be determined to obtain values of the residual parity bits to be determined, and upgrading the code words according to the obtained values of the parity bits. The invention also discloses a device for the hierarchical coding of the LDPC codes, which solves the problems of large storage space and long coding time delay in the conventional LDPC coding method.

Description

technical field [0001] The present invention relates to the encoding technology in the communication system, in particular to a layered encoding method and device of Low Density Parity Check (LDPC) code. Background technique [0002] The effectiveness and reliability of information transmission are two important indicators for evaluating communication systems. In order to increase the reliability of information transmission, a certain degree of redundancy is usually added when channel coding information, so that the codeword has automatic error detection and correction. At the same time, in order to take into account the effectiveness of information transmission, the higher the redundancy, the better. In practical applications, it is usually hoped that in the case of a certain redundancy, a good encoding and decoding method can be used to obtain a good signal at the receiving end. decoding performance. [0003] Low Density Parity Check (LDPC, Low Density Parity Check) code ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/05H03M13/37H03M13/11H04L1/00
CPCH03M13/116H03M13/616H03M13/1182H03M13/611H03M13/1102
Inventor 张涛游月意李强邱宁曹南山姚扬中
Owner ZTE CORP