Coding-Level Evaluation of a Kronecker-Sequence Interleaver Under Synthetic Three-Dimensional Correlated Fault Models

This study evaluates a fixed Kronecker-sequence interleaver under controlled synthetic three-dimensional correlated-fault models. Spatial-cluster, column-correlated, and bit-plane-dependent probability fields are used as coding-level abstractions and are not calibrated device measurements. The K-IPA mapping is compared with random, structured 3D block, modular-stride, and length-adapted quadratic-permutation-polynomial (QPP-style) mappings using BCH(63,45) and RS(63,45) backends. At p = 0.015 and ρ = 0.85, K-IPA BCH has lower FER than random, 3D block, and QPP-style BCH, but its difference from stride BCH is small, and the paired confidence interval includes zero. Within the RS backend, the paired comparisons among K-IPA, stride, and QPP-style mappings do not resolve a difference at this operating point. Because the BCH and RS tensor partitions contain different numbers and types of decoder units, their FER values are not used to rank the two code families. The topology study further shows that no fixed mapping is uniformly best. A separate address-remapping implementation check verifies the fixed lookup table only; device-calibrated fault validation and complete codec hardware evaluation are outside the evidence provided here.