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Title: Joint and separate detection-decoding on BPMR channels
Authors: Wu, T.
Armand, M.A. 
Keywords: Bit-patterned media (BPM)
Channel detection
Davey-MacKay (DM) construction
Written-in errors
Issue Date: 2013
Citation: Wu, T., Armand, M.A. (2013). Joint and separate detection-decoding on BPMR channels. IEEE Transactions on Magnetics 49 (7) : 3779-3782. ScholarBank@NUS Repository.
Abstract: The presence of written-in errors is recognized as a challenging issue that limits the performance of bit-patterned media recording (BPMR). In this paper, we consider the Davey-MacKay coding scheme for a BPMR channel model which consists of a write channel producing dependent insertion, deletion, and substitution errors and a single-track equalized read channel with a GPR target. Three detection-decoding algorithms are proposed to work with an outer LDPC decoder to recover data encoded by the DM coding scheme on the BPMR channel. These include the Bahl-Cocke-Jelinek-Raviv binary input inner decoder (BCJR-BIID) algorithm, the joint detection-decoding algorithm and the separate detection-decoding (SDD) algorithm. Computer simulations show that at low to moderate (resp. high) signal-to-noise ratios, SDD (resp. BCJR-BIID) provides good performance-complexity trade-offs. © 1965-2012 IEEE.
Source Title: IEEE Transactions on Magnetics
ISSN: 00189464
DOI: 10.1109/TMAG.2013.2250262
Appears in Collections:Staff Publications

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