A theoretical comparison of detection techniques on R-DAT

Two alternative detection techniques are simulated on a model of a R-DAT recording channel. The R-DAT model includes electronic and head noise, media noise, adjacent track interference, and overwrite interference. By using this model, the two alternative detection techniques (Class IV partial response and a compromise DC Viterbi detector) are compared with reference flat equalization. Both techniques show some advantage in signal-to-noise ratio margin.>