This paper investigates the use of reconfigurable dual-functional surface to guarantee full-space secure transmission in non-orthogonal multiple access (NOMA) networks. In presence eavesdroppers, downlink communication from base station legitimate users is safeguarded by simultaneously transmitting and reflecting intelligent (STAR-RIS), where three practical operating protocols, namely energy s...

In Vehicle-to-Everything (V2X) communication, the high mobility of vehicles generates Doppler shift which leads to channel uncertainties. Moreover, reasons for uncertainties also include finite feedback, state information (CSI) loss and latency. With this concern, we formulate a joint spectrum power allocation problem V2X communication with imperfect CSI. Specifically, sum capacity cellular use...