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

Y. Nakamura | Zendy; R. Suzuto | Zendy; Hisashi Osawa | Zendy; Yoshihiro Okamoto | Zendy; Yasushi Kanai | Zendy; H. Muraoka | Zendy

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

Author(s) -

Y. Nakamura,

R. Suzuto,

Hisashi Osawa,

Yoshihiro Okamoto,

Yasushi Kanai,

H. Muraoka

Publication year - 2017

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4977548

Subject(s) - finite impulse response , equalization (audio) , computer science , filter (signal processing) , impulse response , waveform , impulse (physics) , terabit , acoustics , digital filter , signal (programming language) , electronic engineering , algorithm , physics , telecommunications , optics , engineering , wavelength , decoding methods , mathematical analysis , radar , mathematics , wavelength division multiplexing , quantum mechanics , computer vision , programming language

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

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