现代电子技术2018，Vol.41Issue(3)：23-26,4.DOI:10.16652/j.issn.1004-373x.2018.03.006
线性分组码的盲识别技术研究
Research on blind recognition technology for linear block code
摘要
Abstract
The blind recognition of binary linear block code is studied. By summarizing the advantage and disadvantage of the current algorithm,on the basis of code weight analysis recognition method,a linear block code recognition algorithm combining code weight distribution,Hamming distance distribution and depth distribution characteristics is put forward. The lowest code weight similarity of coding sequence and random sequence is used to realize the code length recognition and rough recognition of initial point when the values of the traversed code length and initial point are correct. The characteristic that the minimun Ham-ming distance of the block code is bigger than 3 is used to dertermine the initial point of rough recognition. On this basis,the characteristic that the nonzero depth value of the (n, k) linear block code is equal to the block code information bit k is used to solve the information bit and code rate. The position that the depth value is not zero is combined with its corresponding codon to get the generation matrix. The results of a large number of experiments show that,in comparison with the available algorithms, the recognition accuracy and error code adaption ability of the proposed algorithm for the stage of initial point recognition are bet-ter improved,and the algorithm has high engineering practicability.关键词
线性分组码/盲识别/码重分布/汉明距离/深度分布/起始点Key words
linear block code/blind recognition/code weight distribution/Hamming distance/depth distribution/initial point分类
信息技术与安全科学引用本文复制引用
杨燕子,李迟生,罗伟娟..线性分组码的盲识别技术研究[J].现代电子技术,2018,41(3):23-26,4.基金项目
国家自然科学基金项目(61661030) Project Supported by National Natural Science Foundation of China(61661030) （61661030）
