R&D: Joint Multi-Level Readback for Array-Reader Based Interlaced Magnetic Recording

IEEE Transactions on Magnetics has published an article written by Seungwook Yoon, School of Mechatronics, Gwangju Institute of Science and Technology (GIST), Gwangju 61005, South Korea, and Euiseok Hwang, School of Electrical Engineering and Computer Science, GIST, Gwangju 61005, South Korea.

Abstract: “In this study, a novel joint multi-track multi-level (MTML) read channel signal processing scheme is proposed to enhance the data transfer rate in an array-reader based interlaced magnetic recording (ARIMR). Wide individual readers capture mixtures of multiple track contributions and proposed MTML read channel effectively disaggregates individual track data for joint track data retrieval in a single revolution. Numerical evaluations with the micro-pixelated magnetic channel model shows improvements of the cross-track profile of bit error rate with the proposed MTML-ARIMR approach for a dual-reader and triple-track readback configuration.“