On the performance of reconfigurable intelligent surface-assisted UAV-to-ground communication systems

In this study, to reduce the average symbol error rate, and improve coverage reliability of unmanned aerial vehicles (UAVs) ground communication systems. case, we propose a reconfigurable intelligent surfaces (RISs) assisted for UAV scheme, where radio frequency (RF) signal generator sends an unmodulated carrier from UAVs RIS. At surface, RIS modulates each signal, is as generator. We carry out performance analysis UAV-to-ground systems with RIS-assisted without subcarrier quadrature amplitude modulation (SC-QAM) technique. The analytical expressions rare (ASER) channel capacity (ACC) derived. From results, it show that can effectively