Directional-modulation-enabled physical-layer wireless security

Directional-modulation-enabled physical-layer wireless security

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Directional modulation (DM), as a promising keyless physical-layer security technique, has rapidly developed within the last decade. This technique is able to directly secure wireless communications in the physical layer by virtue of the property of its direction-dependent signal-modulation-formatted transmission. This chapter reviews the development in DM technology over recent years and provides some recommendations for future studies.

Chapter Contents:

  • 13.1 Directional modulation (DM) concept
  • 13.2 DM transmitter architectures
  • 13.2.1 Near-field direct antenna modulation
  • 13.2.2 DM using re-configurable antennas in an array configuration
  • 13.2.3 DM using phased antenna array
  • 13.2.4 DM using Fourier beamforming networks
  • 13.2.5 DM using switched antenna arrays
  • 13.2.6 DM using digital baseband
  • 13.3 Mathematical model for DM
  • 13.4 Synthesis approaches for DM transmitters
  • 13.4.1 Orthogonal vector approach for DM synthesis
  • 13.4.2 Other DM synthesis approaches
  • 13.4.3 A note on synthesis-free DM transmitters
  • 13.5 Assessment metrics for DM systems
  • 13.6 Extensions to the DM technique
  • 13.6.1 Multi-beam DM
  • 13.6.2 DM in a multi-path environment
  • 13.7 DM demonstrators
  • 13.8 Conclusions and recommendations for future studies on DM
  • References

Inspec keywords: telecommunication security; modulation

Other keywords: directional-modulation-enabled physical-layer wireless security; secure wireless communications; direction-dependent signal-modulation-formatted transmission

Subjects: Modulation and coding methods

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