Multi-objective beamforming for energy-efficient SWIPT systems

Shiyang Leng, Derrick Wing Kwan Ng, Nikola Zlatanov, Robert Schober

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

16 Citations (Scopus)


In this paper, we study the resource allocation algorithm design for energy-efficient simultaneous wireless information and power transfer (SWIPT) systems. The considered system comprises a transmitter, an information receiver, and multiple energy harvesting receivers equipped with multiple antennas. We propose a multi-objective optimization framework to study the trade-off between the maximization of the energy efficiency of information transmission and the maximization of wireless power transfer efficiency. The proposed problem formulation takes into account the per antenna circuit power consumption of the transmitter and the imperfect channel state information of the energy harvesting receivers. The adopted non-convex multi-objective optimization problem is transformed into an equivalent rank-constrained semidefinite program (SDP) and optimally solved by SDP relaxation. Numerical results unveil an interesting trade-off between the considered conflicting system design objectives and reveal the benefits of multiple transmit antennas for improving system energy efficiency.

Original languageEnglish
Title of host publication2016 International Conference on Computing, Networking and Communications (ICNC 20160
EditorsLiuqing Yang
Place of PublicationPiscataway, NJ, USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages7
ISBN (Electronic)9781467385787
ISBN (Print)9781467385794
Publication statusPublished - 23 Mar 2016
EventInternational Conference on Computing, Networking and Communications 2016 - Kauai, United States of America
Duration: 15 Feb 201618 Feb 2016 (Proceedings)


ConferenceInternational Conference on Computing, Networking and Communications 2016
Abbreviated titleICNC 2016
Country/TerritoryUnited States of America
Internet address

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