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    A Deliberate Bit Flipping Coding Scheme for Data-Dependent Two-Dimensional Channels

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    Author
    Bahrami, Mohsen
    Vasic, Bane
    Affiliation
    Univ Arizona, Dept Elect & Comp Engn
    Issue Date
    2020-02
    Keywords
    Error correction codes
    Channel coding
    Decoding
    Two dimensional displays
    Belief propagation
    Magnetic recording
    Data dependent channels
    constrained coding
    probabilistic inference
    graphical models
    generalized belief propagation (GBP)
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    Publisher
    Institute of Electrical and Electronics Engineers (IEEE)
    Citation
    Bahrami, M., & Vasić, B. (2019). A deliberate bit flipping coding scheme for data-dependent two-dimensional channels. IEEE Transactions on Communications.
    Journal
    IEEE TRANSACTIONS ON COMMUNICATIONS
    Rights
    © 2019 IEEE.
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    In this paper, we present a deliberate bit flipping (DBF) coding scheme for binary two-dimensional (2-D) channels, where specific patterns in channel inputs are the significant cause of errors. The idea is to eliminate a constrained encoder and, instead, embed a constraint into an error correction codeword that is arranged into a 2-D array by deliberately flipping the bits that violate the constraint. The DBF method relies on the error correction capability of the code being used so that it should be able to correct both deliberate errors and channel errors. Therefore, it is crucial to flip minimum number of bits in order not to overburden the error correction decoder. We devise a constrained combinatorial formulation for minimizing the number of flipped bits for a given set of harmful patterns. The generalized belief propagation algorithm is used to find an approximate solution for the problem. We evaluate the performance gain of our proposed approach on a data-dependent 2-D channel, where 2-D isolated-bits patterns are the harmful patterns for the channel. Furthermore, the performance of the DBF method is compared with classical 2-D constrained coding schemes for the 2-D no isolated-bits constraint on a memoryless binary symmetric channel.
    ISSN
    0090-6778
    EISSN
    1558-0857
    DOI
    10.1109/tcomm.2019.2957086
    Version
    Final accepted manuscript
    Sponsors
    National Science Foundation of Sri Lanka
    ae974a485f413a2113503eed53cd6c53
    10.1109/tcomm.2019.2957086
    Scopus Count
    Collections
    UA Faculty Publications

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