TY - JOUR
T1 - Covert Communication in Underlay Cognitive Radio Networks with Energy Harvesting
AU - Fan, Hongbin
AU - Yang, Weiwei
AU - Pan, Gaofeng
AU - Shi, Hui
AU - Rong, Chuanzhen
N1 - Publisher Copyright:
© 2025 IEEE. All rights reserved.
PY - 2025
Y1 - 2025
N2 - This paper examines covert communication in underlay cognitive radio networks (CRNs) with energy harvesting (EH), in which considers two scenarios: 1) with perfect channel state information (CSI) of the link from the secondary source (SS) to the primary receiver (PR) at Willie, 2) with statistical CSI of the SS-PR link at Willie. The closed-form expressions for Willie’s detection error probability, the average minimum detection error probability, the transmission outage probability, and the maximum effective covert rate under both cases are derived and analyzed. The maximum effective covert rate is obtained by optimizing the maximum jamming power of the primary transmitter (PT). The numerical results demonstrate that the combined effect of energy conversion efficiency and time allocation ratio of EH, in conjunction with the maximum jamming power of PT, provides a positive effective covert rate in the secondary network. Furthermore, it is evident that the maximum effective covert rate in the secondary network is greater when Willie has access to the perfect CSI of the SS-PR link than that when Willie only has access to the statistical CSI of the SS-PR link.
AB - This paper examines covert communication in underlay cognitive radio networks (CRNs) with energy harvesting (EH), in which considers two scenarios: 1) with perfect channel state information (CSI) of the link from the secondary source (SS) to the primary receiver (PR) at Willie, 2) with statistical CSI of the SS-PR link at Willie. The closed-form expressions for Willie’s detection error probability, the average minimum detection error probability, the transmission outage probability, and the maximum effective covert rate under both cases are derived and analyzed. The maximum effective covert rate is obtained by optimizing the maximum jamming power of the primary transmitter (PT). The numerical results demonstrate that the combined effect of energy conversion efficiency and time allocation ratio of EH, in conjunction with the maximum jamming power of PT, provides a positive effective covert rate in the secondary network. Furthermore, it is evident that the maximum effective covert rate in the secondary network is greater when Willie has access to the perfect CSI of the SS-PR link than that when Willie only has access to the statistical CSI of the SS-PR link.
KW - covert communication
KW - Energy harvesting
KW - maximum effective covert rate
KW - underlay CRNs
UR - http://www.scopus.com/inward/record.url?scp=105000697664&partnerID=8YFLogxK
U2 - 10.1109/TGCN.2025.3553543
DO - 10.1109/TGCN.2025.3553543
M3 - Article
AN - SCOPUS:105000697664
SN - 2473-2400
JO - IEEE Transactions on Green Communications and Networking
JF - IEEE Transactions on Green Communications and Networking
ER -