Sum-rate maximization of wireless powered primary users for cooperative CRNs: NOMA or TDMA at cognitive users?

D Xu, H Zhu - IEEE Transactions on Communications, 2021 - ieeexplore.ieee.org
Recently, wireless powered cooperative cognitive radio networks (CRNs), which combine
the technologies of radio frequency (RF) energy harvesting and CR, have drawn great …

Sum throughput maximization for multi-user MIMO cognitive wireless powered communication networks

J Kim, H Lee, C Song, T Oh, I Lee - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
In this paper, we study multi-user multi-input multi-output cognitive wireless powered
communication networks (WPCN), in which a secondary WPCN shares spectrum with a …

Energy efficiency optimization for NOMA-based cognitive radio with energy harvesting

X Wang, Z Na, KY Lam, X Liu, Z Gao, F Li… - IEEE access, 2019 - ieeexplore.ieee.org
Energy Efficiency (EE) is a significant problem for Cognitive Radio (CR) network. Recently,
more interest has focused on EE optimization problem in wireless-powered communication …

Optimizing DF cognitive radio networks with full-duplex-enabled energy access points

H Xing, X Kang, KK Wong… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
With the recent advances in radio frequency (RF) energy harvesting (EH) technologies,
wireless powered cooperative cognitive radio network (CCRN) has drawn an upsurge of …

Resource allocation and fairness in wireless powered cooperative cognitive radio networks

SS Kalamkar, JP Jeyaraj, A Banerjee… - IEEE Transactions on …, 2016 - ieeexplore.ieee.org
We integrate a wireless powered communication network with a cooperative cognitive radio
network, where multiple secondary users (SUs) powered wirelessly by a hybrid access point …

Cooperative resource allocation in cognitive radio networks with wireless powered primary users

D Xu, Q Li - IEEE Wireless Communications Letters, 2017 - ieeexplore.ieee.org
This letter focuses on cooperative resource allocation in multi-carrier cognitive radio (CR)
networks where the primary user (PU) is wirelessly powered by the energy harvested from …

End-to-end throughput maximization for underlay multi-hop cognitive radio networks with RF energy harvesting

C Xu, M Zheng, W Liang, H Yu… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
This paper studies a green paradigm for the underlay coexistence of primary users (PUs)
and secondary users (SUs) in energy harvesting cognitive radio networks (EH-CRNs) …

Energy-efficient cooperation in cognitive wireless powered networks

S Yin, Z Qu, Z Wang, L Li - IEEE Communications Letters, 2016 - ieeexplore.ieee.org
In this letter, we consider a cooperative sharing model for cognitive wireless powered
communication networks (CWPCNs), which leverages the notion of cooperation between …

Cognitive non-orthogonal multiple access with energy harvesting: An optimal resource allocation approach

F Li, H Jiang, R Fan, P Tan - IEEE Transactions on Vehicular …, 2019 - ieeexplore.ieee.org
We consider a cognitive radio system, in which a secondary transmitter harvests energy from
a primary transmitter's RF signal. The secondary transmitter, which provides decode-and …

Total throughput maximization of cooperative cognitive radio networks with energy harvesting

K Zheng, X Liu, Y Zhu, K Chi… - IEEE Transactions on …, 2019 - ieeexplore.ieee.org
Cognitive radio and energy harvesting techniques have provided significant benefits in
terms of spectrum reuse and lifetime prolongation for conventional wireless networks. We …