183 citations · 662 across the 60 of their papers we have counts for
7 papers · 1 filter
On the Capacity of Wireless Powered Cognitive Relay Network with Interference Alignment
Sultangali Arzykulov, Galymzhan Nauryzbayev, Theodoros A. Tsiftsis +1
In this paper, a two-hop decode-and-forward cognitive radio system with deployed interference alignment is considered. The relay node is energy-constrained and scavenges the energy…
Error Performance of Wireless Powered Cognitive Relay Networks with Interference Alignment
Sultangali Arzykulov, Galymzhan Nauryzbayev, Theodoros A. Tsiftsis +1
This paper studies a two-hop decode-and-forward underlay cognitive radio system with interference alignment technique. An energy-constrained relay node harvests the energy from the…
An Amateur Drone Surveillance System Based on Cognitive Internet of Things
Guoru Ding, Qihui Wu, Linyuan Zhang +3
Drones, also known as mini-unmanned aerial vehicles, have attracted increasing attention due to their boundless applications in communications, photography, agriculture, surveillan…
Message-Passing Receiver Design for Joint Channel Estimation and Data Decoding in Uplink Grant-Free SCMA Systems
Fan Wei, Wen Chen, Yongpeng Wu +2
The conventional grant-based network relies on the handshaking between base station and active users to achieve dynamic multi-user scheduling, which may cost large signaling overhe…
Low Complexity Resource Allocation for Massive Carrier Aggregation
Stelios Stefanatos, Fotis Foukalas, Theodoros A. Tsiftsis
Optimal resource allocation (RA) in massive carrier aggregation scenarios is a challenging combinatorial optimization problem whose dimension is proportional to the number of users…
All Cognitive MIMO: A New Multiuser Detection Approach with Different Priorities
Nikolaos I. Miridakis, Theodoros A. Tsiftsis, Dimitrios D. Vergados +1
A new detection scheme for multiuser multiple-input multiple-output (MIMO) systems is analytically presented. In particular, the transmitting users are being categorized in two dis…
EGC Reception for FSO Systems Under Mixture-Gamma Fading Channels and Pointing Errors
Nikolaos I. Miridakis, Theodoros A. Tsiftsis
The performance of equal gain combining reception at free-space optical communication systems is analytically studied and evaluated. We consider the case when the total received si…