A Deliberate Bit Flipping Coding Scheme for Data-Dependent Two-Dimensional Channels
AffiliationUniv Arizona, Dept Elect & Comp Engn
KeywordsError correction codes
Two dimensional displays
Data dependent channels
generalized belief propagation (GBP)
MetadataShow full item record
CitationBahrami, M., & Vasić, B. (2019). A deliberate bit flipping coding scheme for data-dependent two-dimensional channels. IEEE Transactions on Communications.
Rights© 2019 IEEE.
Collection InformationThis 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 firstname.lastname@example.org.
AbstractIn 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.
VersionFinal accepted manuscript
SponsorsNational Science Foundation of Sri Lanka