As Perpendicular Magnetic Recording (PMR) technology reaches its areal density limit, Heat-Assisted Magnetic Recording (HAMR)  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.
|Original language||English (US)|
|Title of host publication||2015 IEEE International Magnetics Conference, INTERMAG 2015|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|State||Published - Jul 14 2015|
|Event||2015 IEEE International Magnetics Conference, INTERMAG 2015 - Beijing, China|
Duration: May 11 2015 → May 15 2015
|Name||2015 IEEE International Magnetics Conference, INTERMAG 2015|
|Other||2015 IEEE International Magnetics Conference, INTERMAG 2015|
|Period||5/11/15 → 5/15/15|
Bibliographical notePublisher Copyright:
© 2015 IEEE.