TY - JOUR
T1 - 2-D Data-Dependent Media Noise in Shingled Magnetic Recording
AU - Wang, Yao
AU - Victora, R. H.
AU - Kumar, B. V.K.Vijaya
N1 - Publisher Copyright:
© 1965-2012 IEEE.
PY - 2015/11/1
Y1 - 2015/11/1
N2 - This paper investigates 2-D media noise in shingled magnetic recording (SMR) systems. The media noises caused by the overwriting of the next track and the residual information from the previous track are asymmetric in the cross-track (CT) direction and are found to vary with the linear density. The media noise after equalization is found to be 2-D data dependent, with its mean and variance affected by the nonlinear transition shift in the CT and down-track directions, respectively. Also the effect of media noise on the bit error rate (BER) is studied for increased track densities during the writing process. The effect of jitter on the BER is always significant with increased track density in SMR systems, while the effect of overwriting and inter-track interference on the BER performance are quite different for readback with rotated and normally oriented readers, even though the same writer is used during the writing process.
AB - This paper investigates 2-D media noise in shingled magnetic recording (SMR) systems. The media noises caused by the overwriting of the next track and the residual information from the previous track are asymmetric in the cross-track (CT) direction and are found to vary with the linear density. The media noise after equalization is found to be 2-D data dependent, with its mean and variance affected by the nonlinear transition shift in the CT and down-track directions, respectively. Also the effect of media noise on the bit error rate (BER) is studied for increased track densities during the writing process. The effect of jitter on the BER is always significant with increased track density in SMR systems, while the effect of overwriting and inter-track interference on the BER performance are quite different for readback with rotated and normally oriented readers, even though the same writer is used during the writing process.
KW - 2-D data-dependent media noise
KW - inter-track interference (ITI)
KW - shingled magnetic recording (SMR)
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U2 - 10.1109/TMAG.2015.2437875
DO - 10.1109/TMAG.2015.2437875
M3 - Article
AN - SCOPUS:84946130727
SN - 0018-9464
VL - 51
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
IS - 11
M1 - 7113888
ER -