Analysis of Spatial Distribution of Secret Transmission Performance of SSM Using Ray-Tracing

Spatially selective modulation (SSM) is a physical layer security technique that uses multiple transmitting antennas and single receiving antenna. SSM allows only the legitimate receiver to receive desired modulated signal correctly because of location dependence multipath channel. Previous studies have been statistically conducted using Rayleigh fading Here, we evaluated secret transmission performance ray-tracing, which deterministic propagation model. We assumed an indoor environment in evaluation. found increasing separation between antenna elements improved environment.