The extracted dipulse technique, or pseudorandom sequence method, provides a means for
the characterization and measurement of a variety of linear and nonlinear recording effects …

Nonlinear distortion causes significant degradation at high linear recording densities.
Nonlinear distortion cannot generally be corrected by equalization and is thus particularly …

A formalism is presented which relates the intrinsic error rate of a digital recording channel
to measurable channel parameters: interpulse interactions and signal-to-noise ratio …

The method of pseudorandom sequence channel identification is applied to the
measurement of bit shift due to overwrite in magnetic recording. The experimental results …

Transition-shift distortion for perpendicular magnetic recording is measured using a
pseudorandom sequence and extracted dipulse analysis. The analysis reveals moderately …

A general overview of nonlinearity measurement techniques is presented. For each
technique, its accuracy, flexibility, and efficiency are studied analytically, assuming a …

The loss transfer function of a magnetic recording channel can be readily measured, but
delay between writing and reading prevents simple measurement of the phase function. A …

A pseudo-random sequence method to identify nonlinear effects has been utilized at high
recording densities. This method is extended to distinguish two different nonlinear effects …

General noise voltage relations based on magnetization correlations in thin film recording
media have been developed. Transition position jitter or amplitude fluctuations are a …

A simple but accurate expression for general non-stationary noise correlation in the
presence of a recorded transition is analyzed in terms of both noise voltage and spectral …