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Future terahertz (THz) wireless systems face new jamming vulnerabilities. Directional links are susceptible to beat jamming and envelope detector attacks, challenging security assumptions.

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Area of Science:

  • Wireless Communication
  • Signal Processing
  • Cybersecurity

Background:

  • Increasing bandwidth demand drives wireless communication towards terahertz (THz) frequencies.
  • High directivity of THz signals is often assumed to enhance channel security.

Purpose of the Study:

  • To investigate the vulnerability of directional THz wireless links to jamming.
  • To identify novel jamming strategies distinct from low-frequency considerations.

Main Methods:

  • Analysis of receiver architectures, specifically envelope detectors.
  • Exploitation of broadband receiver characteristics for jamming.
  • Quantification of jamming susceptibility in THz systems.

Main Results:

  • Envelope detectors enable jammers to bypass adaptive countermeasures.
  • Beat jamming attacks can effectively disrupt detuned signals in broadband receivers.
  • Jamming efficacy increases with receiver bandwidth at THz frequencies.

Conclusions:

  • Directional THz links are susceptible to unique jamming techniques.
  • Existing security assumptions for THz communication require re-evaluation.
  • New security measures are needed for wireless systems operating above 100 GHz.