In this letter, we investigate covert communications in an active reconfigure intelligent
surface (RIS) aided multiple-input single-output non-orthogonal multiple access system. To …

Driven by the ever-increasing requirements of ultra-high spectral efficiency, ultra-low
latency, and massive connectivity, the forefront of wireless research calls for the design of …

The intelligent terminals deployed in hydropower IoT can quickly sense the status of
hydropower equipment, thus improving the efficiency of system control and operation …

The combination of simultaneously transmitting and reflecting-reconfigurable intelligent
surface (STAR-RIS) and nonorthogonal multiple access (NOMA) brings the necessary full …

Covert communications hide the information transmission from a watchful adversary (Willie)
while ensuring a satisfactory decoding performance at a legitimate receiver (Bob). In this …

This article focuses on covert communication in a distributed network with multiple
nonorthogonal multiple access (NOMA) systems, where each NOMA system is consisted of …

Network covert channels use network resources to transmit data covertly, and their existence
will seriously threaten network security. Therefore, an effective method is needed to prevent …

In this letter, we investigate the covert communication in uplink non-orthogonal multiple
access (NOMA) system against a warden who can also execute successive interference …

This paper considers the problem of covert communication threatened by jamming attacks.
The transmitter (T) randomly selects a portion of the available channels to transmit uplink …

Federated learning (FL) is a promising distributed machine learning paradigm that can
address privacy and security issues in the Internet of Things, Beyond 5G and 6G, and so on …