Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/118234
Title: Signal Processing for Bit-Patterned Media Recording
Authors: WU TONG
Keywords: Bit-patterned media, Magnetic Recording, Channel Coding and Detection, Written-In Errors, Davey-MacKay Construction, Inter-Track Interference.
Issue Date: 18-Aug-2014
Source: WU TONG (2014-08-18). Signal Processing for Bit-Patterned Media Recording. ScholarBank@NUS Repository.
Abstract: Bit-patterned media recording (BPMR) is a promising technology that can sustain the continuous growth of bit areal density in magnetic recording. Two major and unique challenges for BPMR are the written-in errors (WIEs), i.e., insertion, deletion and substitution (IDS) errors, which occur during the write process, and the 2D interference in the readback process. This thesis investigates and addresses both challenges from the perspective of signal processing. First, the performance of using Reed-Solomon codes as outer codes in the Davey-MacKay (DM) construction on independent IDS channel is studied. Further, a data-dependent IDS (DIDS) channel is developed to mimic the practical BPMR write process and the DM inner decoding is modified to suit the DIDS channel. Finally, three detection-decoding schemes are proposed to recover data on rectangular and staggered BPMR channels, which are modelled as a serial concatenation of the DIDS write channel and a rectangular or staggered BPMR read channel.
URI: http://scholarbank.nus.edu.sg/handle/10635/118234
Appears in Collections:Ph.D Theses (Open)

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