Complexity reduction of a TA detection and correction algorithm in perpendicular recording channels (Thai)

Abstract

This paper proposes a method to reduce the complexity of thermal asperity (TA) detection
and correction algorithms in perpendicular recording channels. We consider the complexity reduction in terms
of reducing the number of operations (i.e., additions and multiplications) that are required to estimate the TA
signal based on a curve fitting technique to suppress the TA effect in the readback signal. Results indicate that
the proposed method with low complexity can still provide bit-error rate (BER) performance similar to
the conventional one (with full complexity) and is also robust to changes in the peak TA amplitude.