In this paper, we investigate the two-way communication between two users assisted by a
reconfigurable intelligent surface (RIS). The scheme that two users communicate …

Low-cost passive intelligent reflecting surfaces (IRSs) have recently been envisioned as a
revolutionary technology capable of reconfiguring the wireless propagation environment …

Spectrum sensing is critically important for cognitive radio, an emerging solution to the
spectrum congestion and low usage of licensed spectrum. Energy detection is a promising …

Cooperative diversity has gained much interest due to its ability to mitigate multipath fading
without using multiple antennas. There has been considerable research on how cooperative …

Reconfigurable intelligent surfaces (RISs) have recently been presented as a revolutionary
technique and recognized as one of the candidates for beyond fifth-generation wireless …

We investigate a secrecy-enhancing design for cooperative downlink and uplink non-
orthogonal multiple access (NOMA) transmissions with an untrusted relay. A source uses the …

In this paper, we consider a relay network over a flat-fading channel, where the relay has no
fixed power supply and thus needs to replenish energy via wireless energy harvesting (EH) …

In this paper, we investigate the relay selection (RS) problem in full-duplex (FD) two-way
relay networks, where the relays are wirelessly powered by harvesting a portion of the …

Amplify-and-forward-based two-way relaying (TWR-AF) promises significant benefits in
wireless networks. In this paper, we aim to obtain unified expressions to determine the …

Cooperative transmission is a promising technology to expand communication range and
improve system performance for underwater optical wireless communications (UOWCs). To …