Write Channel Model for Bit-Patterned Media Recording

TL;DR

This paper introduces a new write channel model for bit-patterned media recording that captures data-dependent synchronization errors, analyzing its information capacity and error characteristics.

Contribution

The paper presents a novel channel model that accounts for data-dependent errors and analyzes its information-theoretic properties, including capacity and error rates.

Findings

Model captures substitution and insertion-deletion errors

Capacity and error rates are characterized

Model reflects data dependence of errors

Abstract

We propose a new write channel model for bit-patterned media recording that reflects the data dependence of write synchronization errors. It is shown that this model accommodates both substitution-like errors and insertion-deletion errors whose statistics are determined by an underlying channel state process. We study information theoretic properties of the write channel model, including the capacity, symmetric information rate, Markov-1 rate and the zero-error capacity.