Please use this identifier to cite or link to this item: https://www.um.edu.mt/library/oar/handle/123456789/98638
Title: Time-varying variable-length error-correcting codes
Authors: Buttigieg, Victor
Briffa, Johann A.
Keywords: Error-correcting codes (Information theory)
Coding theory
Decoders (Electronics)
Algorithms
Issue Date: 2018
Publisher: IEEE
Citation: Buttigieg, V., & Briffa, J. A. (2018, October). Time-varying variable-length error-correcting codes. In 2018 International Symposium on Information Theory and Its Applications (ISITA). 506-510
Abstract: Time-Varying Variable-Length Error-Correcting (TV-VLEC)codes for joint source-channel coding are introduced. These are codes that use different codebooks according to the symbol position. A sequence MAP decoder for TV-VLEC codes is also derived. It is shown that these codes can maintain a better symbol-level synchronization when compared to standard VLEC codes. A new symbol-constrained free distance measure is also introduced that enables the construction of TV-VLEC codes that out perform standard VLEC codes for the same average codeword length and decoder complexity. Using Monte Carlo simulation it is shown that for a simple 4-symbol code a coding gain of 2dB can be achieved at a frame error rate of 10−3.
URI: https://www.um.edu.mt/library/oar/handle/123456789/98638
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