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Nishikawa, M.; Nakamura, Y.; Kanai, Y.; Osawa, H.; Okamoto, Y.
IEEE transactions on magnetics, 02/2021, Letnik: 57, Številka: 2Journal Article
We have previously focused on a log-likelihood ratio (LLR) computed as the decoding reliability by <inline-formula> <tex-math notation="LaTeX">a </tex-math></inline-formula> posteriori probability (APP) decoder on the low-density parity-check (LDPC) coding and iterative decoding system for the shingled magnetic recording (SMR). Then, we clarified that the LLR modulator applying a neural network realizes an effective iterative decoding. In this article, we propose a new neural network LLR modulator considering magnetic transition information obtained from LLRs to reduce the influence of intersymbol interferences (ISIs).
