Suppression of ITI by array head reading and 2D-equalization

Y. Nakamura, R. Suzuto, H. Osawa, Y. Okamoto, Y. Kanai, H. Muraoka

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)


Two-dimensional magnetic recording (TDMR) by shingled magnetic recording (SMR) draws attention as a next generation technology to increase the recording density in hard disk drive (HDD). It is shown that the two-dimensional finite impulse response (2D-FIR) filter provides gain the reproducing waveforms from an array head with 3 readers in the TDMR under a specification of 4 Tbit/inch.2 We evaluate the effect of the intertrack interference (ITI) reduction by 2D-FIR using the correlation between the real FIR filter output and the partial response class-I (PR1) signal corresponding to recording sequence by the computer simulation. The results show that the 2D-FIR filter is effective to mitigate ITI and improves the signal-to-noise ratio at the discriminate point by about 0.6 dB.

Original languageEnglish
Article number056509
JournalAIP Advances
Issue number5
Publication statusPublished - 2017 May 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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