An iterative two-dimensional equalizer for bit patterned media based on contraction mapping

Abstract

Patterned media storage (PMS) is one of the promising technologies to overcome the limitations of the conventional magnetic recording. For a high areal density PMS, both inter-track interference (ITI) and inter-symbol interference (ISI), and noise severely degrade the bit error rate (BER) performance of the system. In this paper, we present a simple iterative two-dimensional equalizer, which is based on the contraction mapping theorem, to mitigate these adverse effects. The performance of the proposed equalizer is evaluated using computer simulations for various conditions. Simulation results suggest that the proposed equalizer is a good candidate for ultra-high capacity PMS with a moderate complexity.