Blind identification method of coding parameters of RS code of error-tolerant code

A coding parameter and blind recognition technology, applied in the field of channel coding recognition algorithm, can solve the problem that information cannot arrive in real time and accurately, and achieve the effect of fast recognition speed, simple algorithm, and reduced bit error rate requirements.

Active Publication Date: 2009-09-16
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Problems solved by technology

[0002] At present, due to factors such as channel and time delay in intelligent communication, information may not arrive in real time and accurately, and sometimes it is necessary to change the coding system

Method used

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  • Blind identification method of coding parameters of RS code of error-tolerant code
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  • Blind identification method of coding parameters of RS code of error-tolerant code

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Embodiment Construction

[0014] The principle of the invention is to design a structured model for blind identification of error-tolerant channel coding without protocol communication, establish a mathematical model of the structured model, and effectively identify the model, thereby realizing blind identification of error-tolerant channel coding without protocol communication.

[0015] The present invention comprises steps:

[0016] ① According to the communication data of frame synchronization after demodulation, according to the code length n=(2 m -1) m, as the number of rows and columns of the matrix is ​​arranged into an overdetermined matrix to simplify the Gaussian elimination matrix in the Galois field. When the rank of the simplified matrix is ​​less than n, select the corresponding m-time primitive The polynomial performs the Fourier transform of the Galois field on the code sequence. When it has the same zero-connected roots and the same zero-connected roots, the m-th degree primitive polyn...

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Abstract

The invention discloses a blind identification method of coding parameters of an RS code of an error-tolerant code, which relates to the technologies of intelligent communication, communication reconnaissance and information security in the communication field. In the method, the characteristic that continuous zero roots are generated on the same specific positions after the coding parameters of the same RS code undergo Fourier transformation in Galois field is adopted, blind identification of the coding parameters of the RS code is realized by the communication contents and the aims of intelligent communication and communication reconnaissance are achieved. The invention is characterized by simple algorithm, stable and steady performance, fast identification, high accuracy and the like and is especially suitable for the channel code identification algorithm in such fields as intelligent communication, communication reconnaissance, wireless electronic detection and communication countermeasure, etc.

Description

technical field [0001] The invention relates to an error-tolerant RS code coding parameter blind recognition method in the communication field, and is particularly suitable for channel coding recognition algorithms in the fields of intelligent communication, communication reconnaissance, radio detection, communication confrontation and the like. Background technique [0002] At present, due to factors such as channel and time delay in intelligent communication, information may not arrive in real time and accurately, and sometimes it is necessary to change the coding system according to changes in the environment and time. In this communication environment, it is impossible to achieve synchronous communication through protocols, so Rapid identification of coding schemes is required. In the field of information interception, channel coding parameters are identified according to the intercepted data to obtain more original information, which provides a reliable basis for commun...

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Application Information

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IPC IPC(8): H04L1/00H03M13/15
Inventor 陈卫东刘健周希元吴宁高新华吴素丽杜宇峰尚庆华周丽丽贾铁艳昝俊军
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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