Performance Evaluation of Burst Error Correction by LDPC Coding and Iterative Decoding System in Magnetic Tape Drive Using a BaFe Magnetic Tape

The tolerance for burst error of the 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 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 error than the CIRC-EC system. In addition, they also clarified that the LDPC-BD system achieves “No errors” with the 3.0-4.5 dB lower SNR than the CIRC-EC system.