This paper investigates the covert communication network assisted by the multi-antenna
relay, by taking into account two typical scenarios of eavesdrop** channel state …

In this paper, we consider an reconfigurable intelligent surface (RIS)-assisted multiple-input–
single-output (MISO) covert symbiotic radio (SR) communication system. RIS, as a …

Intelligent reflecting surface (IRS) is widely utilized in covert communications to enhance the
system performance by passive beamforming. However, transmission covertness is …

Covert communication enhances the security of information transmission by protecting
communication behavior, which has been widely investigated in various wireless …

Our work exploits multiple antennas to ameliorate communication reliability and energy
harvesting efficiency for energy harvesting overlay networks (EHONs). The performance of …

The paper evaluates the system throughput of non-orthogonal multiple access with energy
harvesting (NOMAwEH) subject to realistic considerations including nonlinear energy …