Low-Complexity Soft-Output Decoding of Polar Codes

  title={Low-Complexity Soft-Output Decoding of Polar Codes},
  author={Ubaid U. Fayyaz and John R. Barry},
  journal={IEEE Journal on Selected Areas in Communications},
The state-of-the-art soft-output decoder for polar codes is a message-passing algorithm based on belief propagation, which performs well at the cost of high processing and storage requirements. In this paper, we propose a low-complexity alternative for soft-output decoding of polar codes that offers better performance but with significantly reduced processing and storage requirements. In particular we show that the complexity of the proposed decoder is only 4% of the total complexity of the… CONTINUE READING
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