Fig. 3: Simulation results of physical-layer secure transmission based on the chaotic information metasurface.
From: Chaotic information metasurface for direct physical-layer secure communication
a BER for receivers in different positions, when the transmitter and legitimate receiver are located at (1.15 m, 0°, 0 m) and (3 m, 0°, −0.34 m), respectively. b Corresponding efficiency loss and security gain as a function of σ, the normalized standard deviation of noise amplitude, when the transmitter is positioned at (1.15 m, 0°, 0 m), and the legitimate receiver is positioned at (3 m, 0°, −0.34 m). c, d As in panels (a) and (b), respectively, but for transmitter and legitimate receiver located at (0.75 m, 0°, −0.57 m) and (3 m, 0°, 0 m), respectively.
