A new spectral factorization of 2D channel response and its application to decision feedback equalizer for multitrack recording

Applied to multitrack recording adaptive decision feedback equalizers (DFE) display poor performance at detection and slow convergence time as well as poor tracking properties. The following paper introduces a new spectral factorization of channel impulse responses that can be used for target optimization for a new DFE based detector that is also reported here. The DFE structure considered exhibits improved BER properties as well as fast tracking properties and fast convergence time when used on a separable channel with the target defined here.