Blind identification of extended BCH codes based on parity of code weight
Extended BCH(Bose Chaudhuri Hocquenghem)codes in practical applications have the characteristics of high code rate,variable code length and complex structure.In the field of code recognition,there are still few research results on code length estimation and specific code pattern recognition of high code rate codes.In order to solve the above problems,a code length estimation method based on parity of code weight is proposed.And on this basis,the proposed method uses Galois field Fourier transform to identify the code type,and realizes the identification of extended BCH codes.This recognition process is different from other known codes in other documents and then recognizes other parameters,which is more in line with the actual situation.The simulation results show that the proposed method can realize the recognition of high rate spread BCH codes in binary symmetric channels.When the bit error rate is less than 1.5×10-2,the recognition accuracy of other code lengths can reach above 94％except the code length of 128,and when the bit error rate is less than 7×10-3,the recognition accuracy is close to 100％,with a better recognition performance comparing with the existing algorithms.This method can effectively identify the extended BCH code,and has a good error resilience.
channel codeextended BCH codeparity of code weightGalois field Fourier transformrecognition
万方数据
维普
