Wireless Energy Harvesting in a Cognitive Relay Network

Abstract—Wireless energy harvesting is regarded as a promising energy supply alternative for energy-constrained wireless networks. In this paper, a new wireless energy harvesting protocol is proposed for an underlay cognitive relay network with multiple primary user (PU) transceivers. In this protocol, the secondary nodes can harvest energy from the primary network (PN) while sharing the licensed spectrum of the PN. In order to assess the impact of different system parameters on the proposed network, we first derive an exact expression for the outage probability for the secondary network (SN) subject to three important power constraints: 1) the maximum transmit power at the secondary source (SS) and at the secondary relay (SR), 2) the peak interference power permitted at each PU receiver, and 3) the interference power from each PU transmitter to the SR and to the secondary destination (SD). To obtain practical design insights into the impact of different parameters on successful dat...

• Type: Journal
• Year: 2016
• Where: CORR
• Authors: Yuanwei Liu, Seyed Ali Mousavifar, Yansha Deng, Cyril Leung, Maged Elkashlan
• Keywords: CORR 2016, Education