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In recent years, non-orthogonal transmission schemes with high spectral efficiency have been increasingly emphasised to meet the demand for high speed data transmission in future wireless communication systems with limited spectrum resources [1–5]. SEFDM signaling, which allows for the overlapping of previously orthogonal subcarriers, is particularly notable for its ability to greatly improve spectral efficiency, even though it deliberately introduces ICIs. However, these intrinsic ICIs present challenges, particularly by increasing the complexity of non-orthogonal receiver demodulation.

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Joint Channel Estimation and Equalization for Index-Modulated SEFDM Signaling

  • 章节

  • 发表日期：

    2025年

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  • Nan Wu,
  • Yunsi Ma,
  • Rongkun Jiang

摘要

In recent years, non-orthogonal transmission schemes with high spectral efficiency have been increasingly emphasised to meet the demand for high speed data transmission in future wireless communication systems with limited spectrum resources [1–5]. SEFDM signaling, which allows for the overlapping of previously orthogonal subcarriers, is particularly notable for its ability to greatly improve spectral efficiency, even though it deliberately introduces ICIs. However, these intrinsic ICIs present challenges, particularly by increasing the complexity of non-orthogonal receiver demodulation.