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Blind identification method for coding parameters of linear block codes

A technology of linear block codes and coding parameters, applied in digital transmission systems, using convolutional codes for error correction/error detection, data representation error detection/correction, etc., to achieve the effects of simple algorithm, fast recognition speed, and clear process

Inactive Publication Date: 2014-06-18
36TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] How to correctly identify the relevant parameters of channel coding from the information code stream, so as to decode it correctly, is a basic problem in the field of information reconnaissance and information interception, and there are few reports so far

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  • Blind identification method for coding parameters of linear block codes
  • Blind identification method for coding parameters of linear block codes
  • Blind identification method for coding parameters of linear block codes

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Embodiment Construction

[0023] The present invention will be further elaborated below in conjunction with the accompanying drawings and specific embodiments. These examples should be understood as only for illustrating the present invention but not for limiting the protection scope of the present invention. After reading the contents of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent changes and modifications also fall within the scope defined by the claims of the present invention.

[0024] The following preferred embodiments of the present invention aim to propose an easy-to-implement blind recognition method for linear block codes, by gradually determining the block length and block start point of block codes in stages, thereby creating conditions for utilizing the properties described in the background art. After matrix transformation, the parity check matrix is ​​determined, and then the generator polynomial...

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Abstract

The invention discloses a blind identification method for coding parameters of linear block codes. The method comprises the following steps: determining a block length and a block initial point by using linear transformation; matrixing block code sequences; and finally determining a polynomial generated by the block codes through mathematic analysis. According to the invention, the block length of the block codes, the block initial point and the generated polynomial can be well determined, and the blind identification of the coding parameters of the linear block codes can be realized only through communication contents. The method has the characteristics of simple algorithm, clear process, high identification speed and the like, and is applicable to fields of intelligent communication, communication reconnaissance, information countermeasure and the like.

Description

technical field [0001] The present invention relates to a method for blind identification of coding parameters of a linear block code in a digital communication system. The linear block code includes Hamming code, Golay code, CRC code, BCH code and part of LDPC system code, and also includes the above block code puncture code. The invention is applicable to the fields of intelligent communication, communication reconnaissance, information confrontation and the like. Background technique [0002] Linear block codes are widely used in modern communications. With the development of digital communication technology, more and more fields will have the demand for channel coding blind recognition technology, and channel coding blind recognition technology has also become the frontier of today's communication research. [0003] How to correctly identify the relevant parameters of channel coding from the information code stream, so as to decode it correctly, is a basic problem in th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/00H04L1/06H03M13/23
Inventor 张永光楼财义王挺
Owner 36TH RES INST OF CETC
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