Two-Dimensional Magnetic Recording: Read Channel Modeling and Detection
Anantha Raman Krishnan, Rathnakumar Radhakrishnan, Bane V. Vasic, Aleksander Kavcic, W.E. Ryan, Fatih Erden · 2009
Abstract—Two-dimensional magnetic recording (TDMR) is a novel storage architecture that, in theory, can achieve a density of upto 10 Tb/in 2. It uniquely differs from other proposed next-generation architectures because of its reliance on sophisticated two-dimensional signal processing algorithms. Recently, a number of contributions have been made in the development of read-channel models and detectors for TDMR systems. In this paper, we provide a detailed review on all important readchannel models under consideration. Our discussion focuses on the purpose of each of these models, placing a special emphasis on the suitability of the Voronoi model for the purpose of designing detectors. We also propose several detection schemes for TDMR based on the Voronoi model and present some numerical results. I.