Wireless Power Transfer
PublisherJohn Wiley & Sons, Ltd
SourceWireless Information and Power Transfer
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Large-scale wireless networks are characterized by the existence of multi-user interference due to the concurrent transmission of the network's terminals. In networks where the main focus is wireless power transfer (WPT), interference is beneficial as it increases the harvesting efficiency. This chapter focuses on a wireless-powered cooperative network where the relays harvest energy from the source in order to convey its transmitted information. It deals with a simultaneous wireless information and power transfer (SWIPT) scenario, where terminals employ successive interference cancellation (SIC) techniques to boost the harvesting efficiency. The chapter studies a wireless-powered communication network (WPCN) implementing a wireless-powered opportunistic beamforming (OBF) protocol. Closed-form mathematical expressions are provided for the considered performance metric of each scenario as well as numerical results with useful insights regarding the network's performance.