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As an alternative to Trellis Shaping, in here, Shell Mapping is introduced, which was applied in voice-band V.34 modems. It represents the two-dimensional counterpart directly approximating a Gaussian distribution by controlling the probability of shells that encompass subsets of constellations.

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Block Shaping with Shell Mapping

  • 章节

  • 发表日期：

    2026年

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  • Werner Henkel

摘要

As an alternative to Trellis Shaping, in here, Shell Mapping is introduced, which was applied in voice-band V.34 modems. It represents the two-dimensional counterpart directly approximating a Gaussian distribution by controlling the probability of shells that encompass subsets of constellations.