JOURNAL OF MAGNETICSJOURNAL OF MAGNETICS
- pISSN : 1598-5385
- eISSN : 2233-6648
Journal of
Magnetics
Magnetics
Open Access
Quarterly
- pISSN : 1598-5385
- eISSN : 2233-6648
Editor's Choice
Double-Track PRML Detection for Two-Track Reading with a Wide-Track Reader in Shingled Magnetic Recording Systems
The utilization of two-track simultaneous reading is proposed to avoid the requirement for a narrow track
reader in shingled magnetic recording systems, where partial response maximum likelihood detection and
recursive decoding by oversampling techniques are employed for decoding. To develop effective decoding
techniques when reading two tracks with a wide-track reader, we propose utilizing a pre-coding scheme along
with a modified Viterbi detector. A pre-coder and an oversampling scheme are first adopted, where the
sampling points are located at the centers of the front and rear halves of the recorded bits. The Trellis diagram
of the conventional Viterbi algorithm is then modified according to all possible transitions of the readback
signal obtained from two-track simultaneous reading. The proposed technique can simultaneously detect two
data tracks. Simulation results indicate that at an areal density of 2 Tb/in2, the proposed system offers
improved performance regarding the bit-error rate.
reader in shingled magnetic recording systems, where partial response maximum likelihood detection and
recursive decoding by oversampling techniques are employed for decoding. To develop effective decoding
techniques when reading two tracks with a wide-track reader, we propose utilizing a pre-coding scheme along
with a modified Viterbi detector. A pre-coder and an oversampling scheme are first adopted, where the
sampling points are located at the centers of the front and rear halves of the recorded bits. The Trellis diagram
of the conventional Viterbi algorithm is then modified according to all possible transitions of the readback
signal obtained from two-track simultaneous reading. The proposed technique can simultaneously detect two
data tracks. Simulation results indicate that at an areal density of 2 Tb/in2, the proposed system offers
improved performance regarding the bit-error rate.
Current Issue - Vol.30 No.3
Journal of
Magnetics
Magnetics
Open Access
Quarterly
- pISSN : 1598-5385
- eISSN : 2233-6648
Highlight
- Double-Track PRML Detection for Two-Track Reading with a Wide-Track Reader in Shingled Magnetic Recording Systems Vol.30 , No.3, 2025, pp.465-469
- Determination of the Operating Current of the Bending Magnet in the KSTAR Neutral Beam Injector Vol.30 , No.2, 2025, pp.107-118
- Comparative Investigation on Outer Rotor Permanent Magnet Synchronous Motors with Stator Winding Modules Vol.30 , No.1, 2025, pp.30-39
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