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Optimization for DF Relaying Cognitive Radio Networks with Multiple Energy Access Points

Xing, H; Kang, X; Wong, K-K; Nallanathan, A; (2017) Optimization for DF Relaying Cognitive Radio Networks with Multiple Energy Access Points. In: Jabbari, Bijan, (ed.) Proceedings of 2016 IEEE Global Communications Conference (GLOBECOM). IEEE: Washington, DC USA. Green open access

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Abstract

Cognitive radio (CR) has been advocated to improve the network spectrum efficiency for decades, and the cooperation between the primary and secondary systems has become a new paradigm to further improve the spectrum utilization. However, in practice, secondary transmitters (STs) are usually power constrained, which limits the application of cooperative cognitive radio networks (CCRN). In this paper, to tackle this, we consider a novel spectrum sharing CCRN powered by energy access points (EAPs) that can charge users wirelessly, in which a multi-antenna secondary user (SU) solely powered by its harvested energy seeks cooperation with a single-antenna primary user (PU) by serving as a deocde-and-forward (DF) relay. We investigate a payoff maximization problem from the SU's perspective, who gets paid by offering data relaying service for PU but has to pay for WEH, and obtain its optimal DF relay and WEH strategy. A greedy-based algorithm that can assign the ST to right EAPs is also proposed for the ease of implementation. The proposed scheme is shown to be effective by simulations with a negligible gap to the optimal solution.

Type: Proceedings paper
Title: Optimization for DF Relaying Cognitive Radio Networks with Multiple Energy Access Points
Event: 59th Annual IEEE Global Communications Conference (IEEE GLOBECOM)
Location: Washington, DC
Dates: 04 December 2016 - 08 December 2016
ISBN: 978-1-5090-1328-9
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/GLOCOM.2016.7842102
Publisher version: https://doi.org/10.1109/GLOCOM.2016.7842102
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Wireless communication, Relays, Wireless sensor networks, Array signal processing, Receivers, Antennas, Interference
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1550001
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