A parameter identification method of the concatenated code of rs code and convolutional code

Abstract

The invention discloses a method for identifying parameters of concatenated codes of RS codes and convolutional codes, which includes the following steps: S1, acquiring coded data to be identified, and acquiring all concatenated check matrices of RS codes and convolutional codes ; S2. Acquiring the orthogonal probability value of the encoded data to be identified and each concatenated check matrix; S3. Using the concatenated code parameter corresponding to the concatenated check matrix with the largest orthogonal probability value as the level of the encoded data to be identified Combined code parameters to complete the identification. The present invention can reduce the complexity of the algorithm and effectively improve the robustness on the basis of identifying the parameters of the concatenated code, and has lower requirements on the number of coded data frames to be identified, and can at least realize the concatenation of one frame size Code parameter identification; coded data with bit errors can also be identified, and the concatenated codes of the CCSDS standard have a bit error rate of 10 ‑3 , the probability of parameter identification reaches 90%.

Description

technical field [0001] The invention relates to the field of identifying parameters of concatenated codes, in particular to a method for identifying parameters of concatenated codes of RS codes and convolutional codes. Background technique [0002] The existing method for identifying parameters of concatenated codes is mainly realized through hierarchical recognition of concatenated codes. During the recognition process, the concatenated codes need to be decoded, and different concatenated coding methods need to use different recognition algorithms to estimate parameters. For example, first identify the inner code parameters of the concatenated code, use the inner code parameters to decode, and then identify the outer code parameters of the data. [0003] The above method is fundamentally based on the decoding method. During the implementation of the algorithm, the number of frames of the encoded data is limited, and the complexity of the algorithm is relatively large. For c...

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Problems solved by technology

[0004] Aiming at the above-mentioned deficiencies in the prior art, a method for identifying parameters of concatenated codes of RS codes and convolutional codes provided by the present invention solves the problem of poor robustness of the existing method for identifying parameters of concatenated codes of RS codes and convolutional codes. question

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