Parameter optimization for defeating blind interception in drone protection

This paper deals with the protection of the exchanged data between a drone and mobile stations against blind interceptions. The developed strategy for a Single-Input Multiple-Output Orthogonal Frequency Division Multiplexing (SIMO-OFDM) communication system consists to prevent the interceptors to achieve a good blind channel estimation while allowing an accurate channel identification by the drone in the same wireless transmission conditions. To do so, a relevant selection of the communication parameters such as an appropriate data model with a specific data power is proposed. The channel estimation error variance of the pilot-based and blind-based techniques are compared using the Cramèr Rao Bound (CRB). Simulations show that, under the same wireless transmission conditions, the blind channel estimation approach achieves the worst performance ensuring therefore the protection of the transmitted data.