Nonlinear Cross Talk Cancellation for High Density Optical Recording

This paper deals with cross talk cancellation for high density optical recording. The data density can be increased reducing the track pitch, as long as cross talk is kept under control. To cope with interference from adjacent tracks, we propose and analyze an adaptive nonlinear cross talk canceller based on a three spot detection system. The optical channel is accurately modeled by a two-dimensional Volterra series. For the sake of simplicity, the performance comparisons presented in this paper are based on the assumption that noise is Additive, White, and Gaussian (AWGN model). Simulation results show the effectiveness of the proposed cross talk canceller.