Evaluation of Secret Transmission Performance of Spatially Selective Modulation

Spatially selective modulation (SSM) is a physical layer security technique based on multiple transmitting antennas and a single receiving antenna. The method allows only the legitimate receiver to receive the desired modulated signal correctly because of the location dependence of a wireless channel. Here, we analyzed the anti-eavesdropping performance of SSM when the separation of the transmitting antenna elements is changed.