Abstract 6G networks have the burden to provide not only higher performance compared to
5G, but also to enable new service domains as well as to open the door over a new …

This paper proposes a training-based channel estimation scheme for achieving quality-of-
service discrimination between legitimate and unauthorized receivers in wireless multiple …

Security is a crucial feature of current (5G) and even more for future (6G) communication
networks. While the innate nature of the wireless channel is an issue for guaranteeing …

Recently the huge development of different and heterogeneous wireless communication
systems raises the problem of growing spectrum scarcity. Cognitive radio tends to solve this …

IEEE 802.11 is the Wireless Local Area Networks (WLAN) standard developed by the IEEE
LAN/MAN Standards Committee. WLANs are increasingly deployed by businesses …

A fundamental problem for signal processing in wireless communications is the separation
of multiple signals/users from their mixture. The problem is simpler if they are …

From the communication channel and implementation aspects of communications, the
transmission environment may be sufficiently degraded that introduces practical difficulties …

The issues of privacy and security in wireless communication networks have taken on an
increasingly important role as these networks continue to be deployed worldwide …

In this paper, we consider a spectrum access scenario which consists of two groups of users,
namely Primary Users (PUs) and Secondary Users (SUs) in Cooperative Cognitive Radio …

Physical-layer security is now being considered for information protection in future wireless
communications. However, a better understanding of the inherent secrecy of wireless …