误码条件下TPC码盲识别

Blind Recognition of TPC Code Under Error Code Condition

针对TPC码盲识别问题,对TPC码的结构和子码展开研究,利用子码码重分布性质,提出了一种误码条件下TPC码盲识别的方法。研究了二维、三维、复用式三维TPC码的编码结构,并列举了TPC码典型的子码类型和参数。研究码长与码字重量奇偶性的关系,得到了子码码字重量均为偶数的性质,利用二维TPC码的结构和系统线性分组码的性质,推导出三维TPC码校验部分具有相同的性质。基于上述性质,遍历不同码长计算对应的偶数码重比例,利用码长与码字重量奇偶性之间的关系,实现了子码扩展BCH码、偶校验码码长的识别,可适用于二维、三维TPC码的情况。仿真结果表明,推导的命题与仿真结果一致,所提方法能够在较高误码率条件下实现TPC码的有效盲识别。

To solve the problem of blind recognition of TPC codes,the structure and subcodes of TPC codes are studied,and a method for blind recognition of TPC codes under error code conditions is presented by using the redistribution of sub⁃codes.And lists the typical subcode types and parameters of TPC codes.The differences of minimum Hamming distance and code rate between different types of BCH codes as subcodes are analyzed.The relationship between code length and parity of code weight is studied,and the property that the weight of subcodes is even is obtained.Using the structure of two-dimensional TPC codes and the properties of linear system block codes,it is deduced that the parity part of threedimensional TPC codes has the same property.Based on the above properties,traverse different code lengths to calculate corresponding even-digit weight ratios,and use the relationship between code length and code-word weight parity to realize the recognition of subcode extended BCH code and even-check code length,which can be applied to two-dimensional and three-dimensional TPC codes.The simulation results show that the derived proposition is consistent with the simulation re⁃sults,and the proposed method can realize the effective blind recognition of TPC codes under the condition of high bit error rate.