@article{M6908D04E, title = "IHDD-GRAND Algorithm for Decoding Symmetric Block-Wise Concatenated BCH Codes", journal = "The Journal of Korean Institute of Communications and Information Sciences", year = "2024", issn = "1226-4717", doi = "10.7840/kics.2024.49.3.365", author = "Gabriel, Jeongseok Ha", keywords = "BCH codes, symmetric block-wise concatenation, GRAND algorithm, hard-decision decoder", abstract = "Block-wise concatenated Bose-Chaudhuri-Hocquenghem (BC-BCH) codes are shown to have excellent error-correcting capability under hard-decision decoding. The variant of BC-BCH codes, namely symmetric BC-BCH (SBC-BCH) codes, is later introduced to improve the error-correcting performance of BC-BCH codes. In this work, we propose a new hard-decision algorithm, IHDD-GRAND, which aims to further enhance the error-rate of SBC-BCH codes. The proposed algorithm uses GRAND as an auxiliary decoder for the IHDD, and it can be efficiently implemented by utilizing the error-confinement property of SBC-BCH codes. It will be shown that the proposed algorithm significantly improves the error-correcting performance of SBC-BCH codes." }