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Directional Modulation for Compact Devices

: Narbudowicz, A.; Ammann, M.J.; Heberling, D.


IEEE antennas and wireless propagation letters 16 (2017), S.2094-2097
ISSN: 1536-1225
Fraunhofer FHR ()

A new directional modulation system that uses radiation pattern data for modulation encoding is proposed. The approach allows compact multiport antennas (e.g., MIMO-capable antennas) to be used for directional modulation, replacing extensive arrays. The modulation weighting coefficients are calculated with a fixed, antenna specific equation, thus reducing computational complexity. The solution is intended to enhance privacy in small, battery-operated wireless devices, required for “Internet of Things” applications.