Wireless Networks with Energy Harvesting and Power Transfer: Joint Power and Time Allocation

Zoran Hadzi-Velkov, Ivana Nikoloska Nikoloska, Trung Q. Duong, George K. Karagiannidis

Research output: Contribution to journalArticle

71 Citations (Scopus)

Abstract

In this letter, we consider wireless powered communication networks which could operate perpetually, as the base station (BS) broadcasts energy to the multiple energy harvesting (EH) information transmitters. These employ “harvest then transmit” mechanism, as they spend all of their energy harvested during the previous BS energy broadcast to transmit the information towards the BS. Assuming time division multiple access (TDMA), we propose a novel transmission scheme for jointly optimal allocation of the BS broadcasting power and time sharing among the wireless nodes, which maximizes the overall network throughput, under the constraint of average transmit power and maximum transmit power at the BS. The proposed scheme significantly outperforms “state of the art” schemes that employ only the optimal time allocation. If a single EH transmitter is considered, we generalize the optimal solutions for the case of fixed circuit power consumption, which refers to a much more practical scenario.
Original languageEnglish
Pages (from-to)50-54
Number of pages5
JournalIEEE Signal processing Letters
Volume23
Issue number1
Early online date13 Nov 2015
DOIs
Publication statusPublished - Jan 2016

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