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PAPR reduction scheme for OTFS signal in low-altitude ISAC network

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Abstract

To ensure the high resolution, orthogonal-time-frequency-space (OTFS) signal require a large frame plane with a huge number of quantification lattices. However, this will lead to the high peak-to-average-power ratio (PAPR) as well as the energy waste problem. To address these issues, we propose in this paper a low-complexity PAPR reduction scheme for OTFS signals based on clipping and noise compression. Moreover, we present detailed analysis on the PAPR performance and the processing complexity to verify the flexibility of the proposed scheme. Simulation results demonstrate that the proposed scheme has superior performance to existing benchmarks in terms of 2-3 dB reduction in PAPR.

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Author notes

  1. Shuai Han, Abderrahim Benslimane and Cheng Li have contributed equally to this work.

Authors and Affiliations

  1. Communication Research Center, Harbin Institute of Technology, Xidazhi, Harbin, 150001, Heilongjiang, China

    Shuai Han & Yu Wang

  2. LIA/CERI, Avignon University, rue Louis Pasteur, Avignon, Vaucluse, 84911, France

    Abderrahim Benslimane

  3. School of Engineering Science, Simon Fraser University, University Drive, Burnaby, British Columbia, V3N 2P2, Canada

    Cheng Li

Authors
  1. Shuai Han
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  2. Yu Wang
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  3. Abderrahim Benslimane
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  4. Cheng Li
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Contributions

Yu Wang wrote the original manuscript, Shuai Han made major revisions, and Abderrahim Benslimane and Cheng Li reviewed the manuscript in detail and suggested revisions.

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Correspondence to Yu Wang.

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Han, S., Wang, Y., Benslimane, A. et al. PAPR reduction scheme for OTFS signal in low-altitude ISAC network. Wireless Netw 32, 71–83 (2026). https://doi.org/10.1007/s11276-025-04043-w

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