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Underlying Security Transmission Design for Orthogonal Time Frequency Space (OTFS) Modulation.

Wei Liang1,2, Xuan Liu2, Jia Shi2

  • 1School of Electronics and Information, Northwestern Polytechnical University, Xi'an 710072, China.

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Summary

This study introduces a secure Orthogonal Time Frequency Space (OTFS) transmission scheme using 2D permutation and GOST algorithm for high-mobility wireless networks. It also improves Peak-to-Average Power Ratio (PAPR) for enhanced secure communication.

Keywords:
OTFSsecure transmissionsecurity analysis

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Area of Science:

  • Wireless Communication
  • Information Security
  • Signal Processing

Background:

  • High-mobility wireless scenarios present significant challenges for secure data transmission.
  • Orthogonal Time Frequency Space (OTFS) modulation offers advantages in high-mobility environments but requires robust security measures.
  • Existing security schemes may not adequately address the unique characteristics of OTFS modulation.

Purpose of the Study:

  • To propose a novel 2D permutation-aided OTFS secure transmission scheme.
  • To enhance the Peak-to-Average Power Ratio (PAPR) performance of the OTFS scheme.
  • To analyze the security robustness of the proposed scheme against various attacks.

Main Methods:

  • Implementation of a 2D permutation technique on the OTFS modulation domain.
  • Integration of the Gosudarstvennyi Standard (GOST) algorithm for disturbance control.
  • Development of an improved Selective Mapping (SLM) algorithm to mitigate PAPR issues.
  • Comprehensive security analysis to evaluate resistance against common wireless attacks.

Main Results:

  • The proposed scheme effectively ensures secure transmission in high-mobility wireless scenarios.
  • The improved SLM algorithm significantly reduces PAPR with low computational complexity.
  • Security analysis confirms the scheme's strong resistance to a range of effective attacks.
  • Numerical results validate the security properties of the proposed OTFS transmission scheme.

Conclusions:

  • The developed 2D permutation-aided OTFS secure transmission scheme provides a viable solution for secure wireless communications.
  • The integration of GOST and improved SLM algorithms enhances both security and signal quality.
  • The scheme demonstrates excellent performance and security guarantees for high-mobility applications.