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      • Department of Electrical and Electronics Engineering
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      Bit-flipping for stack decoding of polarization-adjusted convolutional (PAC) codes

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      Author(s)
      Moradi, Mohsen
      Date
      2022-09-06
      Source Title
      International Workshop on Signal Design and Its Applications in Communications (IWSDA)
      Publisher
      Institute of Electrical and Electronics Engineers
      Pages
      1 - 5
      Language
      English
      Type
      Conference Paper
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      Abstract
      While sequential decoding of polarization-adjusted convolutional (PAC) codes constructed using polar rate profile has low computational complexity, their error-correction per-formance falls far short of the theoretical bounds for finite blocklength codes. In this paper, we use the bit-flipping technique in the stack decoding algorithm of PAC codes in order to improve their error-correction performance. This technique maintains the low memory requirements of stack decoding and polar demapper. Additionally, at high SNR values, the number of visits at each level of the decoding tree is almost one. Numerical findings indicate that this approach is capable of outperforming the stack decoding algorithm.
      Keywords
      Polarization-adjusted convolutional codes
      Polar codes
      Stack decoding
      Sequential decoding
      Bit flipping
      Permalink
      http://hdl.handle.net/11693/111893
      Published Version (Please cite this version)
      https://doi.org/10.1109/IWSDA50346.2022.9870580
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      • Department of Electrical and Electronics Engineering 4011
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