A study of SNR and BER in Heat Assisted Magnetic Recording (HAMR)

Y. Jiao; Y. Wang; R. H. Victora

doi:10.1109/INTMAG.2015.7157463

A study of SNR and BER in Heat Assisted Magnetic Recording (HAMR)

Y. Jiao, Y. Wang, R. H. Victora

Electrical and Computer Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Scopus citations

Abstract

As Perpendicular Magnetic Recording (PMR) technology reaches its areal density limit, Heat-Assisted Magnetic Recording (HAMR) [1] becomes one of the most promising candidates for the next generation recording technology that could allow continued areal density growth up to 4 Tb/in². However, as the areal density increases, it will bring many challenges to the recording system, such as increased non-linear bit shift and transition noise, and could lower the SNR. In this work, we focused on the factors that could affect the signal-to-noise ratio (SNR) and hence bit error rate (BER) of the HAMR system: we try to determine which one is more important. We then studied SNR vs BER by processing the readback signal with a 1D minimum mean square error (MMSE) equalizer and an improved Viterbi detector[2][3].

Original language	English (US)
Title of host publication	2015 IEEE International Magnetics Conference, INTERMAG 2015
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479973224
DOIs	https://doi.org/10.1109/INTMAG.2015.7157463
State	Published - Jul 14 2015
Event	2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China Duration: May 11 2015 → May 15 2015

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Name	2015 IEEE International Magnetics Conference, INTERMAG 2015

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Other	2015 IEEE International Magnetics Conference, INTERMAG 2015
Country/Territory	China
City	Beijing
Period	5/11/15 → 5/15/15

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© 2015 IEEE.

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A study of SNR and BER in Heat Assisted Magnetic Recording (HAMR). / Jiao, Y.; Wang, Y.; Victora, R. H.
2015 IEEE International Magnetics Conference, INTERMAG 2015. Institute of Electrical and Electronics Engineers Inc., 2015. 7157463 (2015 IEEE International Magnetics Conference, INTERMAG 2015).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Jiao, Y, Wang, Y & Victora, RH 2015, A study of SNR and BER in Heat Assisted Magnetic Recording (HAMR). in 2015 IEEE International Magnetics Conference, INTERMAG 2015., 7157463, 2015 IEEE International Magnetics Conference, INTERMAG 2015, Institute of Electrical and Electronics Engineers Inc., 2015 IEEE International Magnetics Conference, INTERMAG 2015, Beijing, China, 5/11/15. https://doi.org/10.1109/INTMAG.2015.7157463

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abstract = "As Perpendicular Magnetic Recording (PMR) technology reaches its areal density limit, Heat-Assisted Magnetic Recording (HAMR) [1] becomes one of the most promising candidates for the next generation recording technology that could allow continued areal density growth up to 4 Tb/in2. However, as the areal density increases, it will bring many challenges to the recording system, such as increased non-linear bit shift and transition noise, and could lower the SNR. In this work, we focused on the factors that could affect the signal-to-noise ratio (SNR) and hence bit error rate (BER) of the HAMR system: we try to determine which one is more important. We then studied SNR vs BER by processing the readback signal with a 1D minimum mean square error (MMSE) equalizer and an improved Viterbi detector[2][3].",

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A study of SNR and BER in Heat Assisted Magnetic Recording (HAMR)

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