Equalization and noise prediction followed by sequence detection and postprocessing are studied for double-layer perpendicular recording channels that are corrupted by electronics and transition noise. The performance of various outer coding schemes, such as conventional Reed--Solomon (RS) codes with 8-bit and 10-bit symbols and low-density parity check (LDPC) codes, is evaluated, and a signal-processing and coding perspective is presented for both longitudinal and perpendicular recording channels. Finally, the capacity of recording channels is characterized.
By: Roy D. Cideciyan, Evangelos Eleftheriou, and Thomas Mittelholzer
Published in: RZ3389 in 2001
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