A Rate-5/6 2D Modulation Code for Single-Reader/Two-Track Reading in BPMR Systems
K. Buahing, Wiparat Busyatras, Chanon Warisarn · 2018 IEEE International Magnetics Conference (INTERMAG) · 2018
A reduction in the track width of magnetic recording systems results in a welcome increase in areal density (AD), but also in the unfortunate appearance of extreme inter-track interference (ITI) that can severely deteriorate system performance. The effect of severe ITI may be mitigated through the use of coding schemes [1]. In this paper, therefore, we present a rate-5/6 two-dimensional (2D) modulation code that is designed based on a proposed single-reader/two-track reading (SRTR) technique to cope with this serious problem in staggered bit-patterned media recording (BPMR) systems. We then evaluate the bit-error rate (BER) performance of the proposed system in the presence of media noise, e.g., position and size fluctuation. Our simulation results indicate that, at the same user density (UD), the proposed system is better than an uncoded system by about 1.0 dB at the BER of $10 ^{-5}$ and is also superior to a conventional recording system.