Iterative MAP detection using interleaved EPR4 equalizer for magnetic recording

Abstract In this paper, we propose an iterative MAP detection method using two interleaved EPR4 linear equalizer outputs for high-density magnetic recording channels. The iterative detection is performed using two EPR4 MAP decoders that are separated by an interleaver. Simulation results show that the proposed method outperforms the conventional EPR4ML detection 7 dB when the density is S =2.5. When S =3.0, the difference in performance is more evident.