Method for recognizing blindly convolution code coding parameter of tolerant error code

Abstract

The invention discloses a method for blindly recognizing convolution code coding parameter of tolerant error code, relating to the technology of intelligent communication, communication reconnaissance and information security in the communication field. The method comprising the following steps of: adopting a linear equation for forming two element field for the coding parameter to be recognized; then solving a fault-tolerant linear equation by conducting Walsh-Hadamard transform to an equations set to recognize the coding parameter of the convolution code, and realizing the blind recognition of the coding parameter of the convolution code only through communication content; and finally achieving the purpose of intelligent communication and communication reconnaissance. The method is characterized by simple algorithm, stable and steady performance, high accuracy and the like, and is especially applicable to the channel coding recognition algorithm in the fields of intelligent communication, communication reconnaissance, radiodetection, communication countermeasure, etc.

Description

technical field

[0001] The invention relates to an error-tolerant convolution code encoding parameter blind identification method in the field of communication, and is especially suitable for channel encoding identification 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 relia...

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