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Associated Sectors of Magnetic Recording Systems Using Spatially Coupled LDPC Codes
Author(s)
Date Issued
February 18, 2022
Type
Article
Abstract
In traditional magnetic recording systems, nonassociated sectors are mainly adopted, whereby two consecutive sectors are decoded independently by the low-density parity-check (LDPC) codes. In this paper, we propose a magnetic recording system with associated sectors, constructed using spatially coupled low-density parity-check (SC-LDPC) codes. If the SC-LDPC decoder cannot correct the erroneous bits in the current sector, it can request information stored in previous sectors to improve decoding performance. Moreover, we modify protograph-based extrinsic information transfer (P-EXIT) charts to examine the theoretical performance of SC-LDPC codes applied to both non-associated and associated sectors. Our theoretical results show that the associated sectors achieve significant performance gains compared to the traditional non-associated sectors.
Citation
Ecti Transactions on Electrical Engineering Electronics and Communications, 20(1), 10-21, 2022