Huffman Coded Sphere Shaping with Short Length Reduced Complexity

    •  Millar, D.S., Fehenberger, T., Yoshida, T., Suzuki, N., Koike-Akino, T., Kojima, K., Parsons, K., "Huffman Coded Sphere Shaping with Short Length Reduced Complexity", European Conference on Optical Communication (ECOC), DOI: 10.1049/​cp.2019.0784, September 2019.
      BibTeX TR2019-105 PDF
      • @inproceedings{Millar2019sep,
      • author = {Millar, David S. and Fehenberger, Tobias and Yoshida, Tsuyoshi and Suzuki, Naoki and Koike-Akino, Toshiaki and Kojima, Keisuke and Parsons, Kieran},
      • title = {Huffman Coded Sphere Shaping with Short Length Reduced Complexity},
      • booktitle = {European Conference on Optical Communication (ECOC)},
      • year = 2019,
      • month = sep,
      • publisher = {IET},
      • doi = {10.1049/cp.2019.0784},
      • isbn = {978-1-83953-185-9},
      • url = {}
      • }
  • MERL Contacts:
  • Research Areas:

    Communications, Signal Processing


A novel probabilistic shaping architecture is proposed which approximates the optimal sphere-bound while utilizing a Huffman tree and binary mapping/demapping based on look-up-tables. A 100 symbol long DM sequence achieves within 0.2 dB of the infinite length asymptote, and is implemented with a LUT of 100 kbit.


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