Next-generation communication systems are required to be efficient in power and spectrum
usage. In this direction, novel spatial multiplexing techniques, such as orbital angular …

The emerging orbital angular momentum (OAM), which is a property describing the helical
phase fronts of electromagnetic waves, offers the potential to improve reliability and increase …

Due to the growing number of users, power, and spectral effectiveness, most communication
systems are complex and difficult to implement on a large scale. Artificial Intelligence (AI) …

Existing frequency hopping (FH) techniques mainly concentrate on how to achieve robust
anti-jamming while ignoring the requirement of spectrum efficiency (SE). Orbital angular …

In cognitive radio networks, the jamming attacks, which have the same ability with secondary
users (SUs) but access the licensed channels without considering the carrier sense multiple …

Because of the ever-increasing number of users, a communication system's power and
spectrum effectiveness are critical to its success. To meet these system specifications, we …