R&D: Performance Evaluation of Burst Error Correction by LDPC Coding and Iterative Decoding System in Magnetic Tape Drive

IEEE Transactions on Magnetics has published an article written by Yasuaki Nakamura, Taisei Akamatsu, Madoka Nishikawa, and Yoshihiro Okamoto, Graduate School of Science and Engineering, Ehime University, Matsuyama, Japan.

Abstract: “The tolerance for burst error of interleaved low-density parity-check (LDPC) code is evaluated with the cross-interleaved Reed–Solomon code (CIRC) in the magnetic tape drive using a BaFe magnetic tape. We evaluate the interleaved LDPC coding and iterative decoding system with burst error detector (LDPC-BD) system by the required signal-to-noise ratio (SNR) to achieve ‘No errors’ for the burst-like deterioration such as media defects to the CIRC with erasure error correction (CIRC-EC) system by computer simulation. The results clarify that the LDPC-BD system tolerates the longer burst errors than the CIRC-EC system and the LDPC-BD system achieves ‘No errors’ with the 3.0 – 4.5 dB lower SNR than the CIRC-EC system.“