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Check matrix construction and encoding and decoding method and device for low-density parity-check code

A low-density parity and check matrix technology, applied in the field of encoding and decoding, can solve problems such as no encryption

Active Publication Date: 2016-02-10
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing LDPC-based channel coding method does not have the function of encryption

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  • Check matrix construction and encoding and decoding method and device for low-density parity-check code
  • Check matrix construction and encoding and decoding method and device for low-density parity-check code
  • Check matrix construction and encoding and decoding method and device for low-density parity-check code

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Embodiment Construction

[0121] The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0122] an embodiment

[0123] see figure 1 , which shows a flow chart of a check matrix construction method for LDPC provided in an embodiment of the present application, which may include the following steps:

[0124] Step 101: Obtain the first encryption verification parameter h of LDPC i，j，0 , the second encryption verification parameter h i，j，1 and the third encryption check parameter h i，j，2 .

[0125] In this embodiment, after obtaining the first encryption verification p...

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Abstract

The invention provides a check matrix construction method, a coding and decoding method for a low density parity check code (LDPC) and a device. The check matrix construction method of the LDPC comprises the following steps: obtaining a first encryption calibration parameter hi, j, 0, a second encryption calibration parameter hi, j, 1 and a third encryption calibration parameter hi, j, 2; establishing an encryption parameter hi, j of the LDPC; taking the encryption parameter hi, j of the LDPC as a substitution parameter of a submatrix P (hi, j) of an encryption matrix P; establishing the submatrix P (hi, j) of the encryption matrix P; and obtaining structured invertible matrix D of the LDPC and establishing a check matrix Hm of the LDPC by combining the encryption matrix P. Due to the fact that the substitution parameter hi, j of the submatrix P (hi, j) structuring the encryption matrix P has encryption performance, so that the finally-established check matrix Hm of the LDPC also has the encryption performance. In addition, encryption coding for channels is achieved and coding safety is improved when the channels are coded based on the check matrix Hm, with the encryption performance, of the LDPC.

Description

technical field [0001] The present application relates to the technical field of encoding and decoding, and in particular to a method for constructing a check matrix of a low-density parity-check code, an encoding and decoding method, and a device. Background technique [0002] With the development and maturity of the third-generation and fourth-generation wireless communication technologies, the demand for digital multimedia communication services is increasing day by day, and a large number of new high-speed developing mobile communication industries and wireless multimedia industries have emerged. At the same time, with the wide application of communication networks, various network services (such as e-commerce, electronic affairs, e-government, digital currency, online banking, etc.) are also booming. While pursuing high-quality information services, people pay more and more attention to various information security issues. [0003] High-quality communication is reflect...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03M13/11
Inventor 管武梁利平
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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