| Title | Smartphone screen to camera uplink communication with enhanced physical layer security by low-luminance space division multiplexing |
| Publication Type | Conference Paper |
| Year of Publication | 2022 |
| Authors | Kawade, Alisa, Chujo, Wataru, Kobayashi, Kentaro |
| Conference Name | 2022 IEEE VTS Asia Pacific Wireless Communications Symposium (APWCS) |
| Keywords | Cameras, Meters, Metrics, Numerical models, physical layer security, pubcrawl, resilience, Resiliency, Scalability, screen camera communication, space division multiplexing, Symbols, visible light communication, Visible Light Communications Security, Wireless communication |
| Abstract | To achieve secure uplink communication from smartphones' screen to a telephoto camera at a long distance of 3.5 meters, we demonstrate that low-luminance space division multiplexing screen is effective in enhancement of the physical layer security. First, a numerical model shows that the spatial inter-symbol interference caused by space division multiplexing prevents eavesdropping from a wide angle by the camera. Second, wide-angle characteristics of the symbol error rate and the pixel value distribution are measured to verify the numerical analysis. We experimentally evaluate the difference in the performances from a wide angle depending on the screen luminance and color. We also evaluate the performances at a long distance in front of the screen and a short distance from a wider angle. |
| DOI | 10.1109/APWCS55727.2022.9906477 |
| Citation Key | kawade_smartphone_2022 |
Smartphone screen to camera uplink communication with enhanced physical layer security by low-luminance space division multiplexing