Blind recognition method of convolutional coding parameters

A technology of encoding parameters and convolutional codes, which is applied in the direction of error correction/error detection using convolutional codes, data representation error detection/correction, etc., which can solve the problems of no generating matrix method and blind identification of convolutional codes, etc. Achieve the effect of simple algorithm, fast recognition speed and clear process

Inactive Publication Date: 2011-11-16
36TH RES INST OF CETC
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Problems solved by technology

However, this property cannot be used for blind recognition of convolutional codes, and for non-1 / n 0 The paper does not give a method to solve the generation matrix of the code rate convolutional code

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  • Blind recognition method of convolutional coding parameters
  • Blind recognition method of convolutional coding parameters
  • Blind recognition method of convolutional coding parameters

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Embodiment Construction

[0024] 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.

[0025] The following preferred embodiments of the present invention aim to propose an easy-to-implement blind recognition method for convolutional codes, which creates conditions for utilizing the properties described in the background technology after determining the output code length of the convolutional code and the starting point of the output codeword. The parity check matrix is ​​determined by performing elementary transforma...

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Abstract

The invention discloses a blind recognition method of convolutional coding parameters. The method has the following beneficial effects: matrix transformation is carried out on convolutional code sequences after determining the output convolutional code length n0 and the output codon start point through linear transformation, thus determining the check matrix of the convolutional code and further obtaining the generator matrix through analysis; the problem of determination of the output convolutional code length and output codon start point is better solved; a method for obtaining the generator matrix from the check matrix of the convolutional code with rate not being 1/n0 is also provided; blind recognition of the convolutional coding parameters can be realized only through the communication content; and the method has the characteristics of simple and direct algorithm, clear process, high recognition speed and the like. The blind recognition method is applicable to the fields of intelligent communication, information processing and the like.

Description

technical field [0001] The invention relates to a blind identification method of convolution code encoding parameters in a digital communication system, which is applicable to the fields of intelligent communication, information processing and the like. Background technique [0002] Convolutional codes are widely used in modern communications. With the development of digital communication technology, more and more fields will have the demand for blind recognition technology of convolutional codes. Blind recognition technology of convolutional codes has become the frontier of today's communication research. field. [0003] At present, the limited recognition of convolutional codes is mainly limited to 1 / 2 code rate and based on 1 / 2 source convolutional codes (n 0 -1) / n 0 Blind recognition of punctured convolutional codes. For 1 / 2 convolutional code, if its parity check matrix is ​​h (1，1) (D), h (1，2) (D), then the relationship between its generator matrix and its parity...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M13/23
Inventor 张永光
Owner 36TH RES INST OF CETC
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