Research

We measured the signal-to-noise ratio under two different LEDs distributions and the clustered distribution has a 5 dB gain compared to the non-clustered distribution.

We used 4 parallel connected PDs to build a diffuse light reader using a high bay light. Received signal strength indicates high communication and sensing performance at 5 meters. 

We investigate a retroreflective optical integrated sensing and communication (RO-ISAC) system using orthogonal frequency division multiplexing (OFDM) and corner cube reflector (CCR). To accurately model the reflected sensing channel of the RO-ISAC system, both a point source model and an area source model are proposed according to the two main types of light sources that are widely used. Detailed theoretical and experimental results are presented to verify the accuracy of the proposed channel models and evaluate the communication and sensing performance of the considered RO-ISAC system.