English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

In this paper, we determine the harvested power region of a two-usermultiple-input single-output (MISO) wireless power transfer (WPT) system for anon-linear model of the rectennas at the energy harvester (EH) nodes. To thisend, we characterize the distributions of the transmit symbol vector thatachieve individual points on the boundary of this region. Each distribution isobtained as solution of an optimization problem where we maximize a weightedsum of the average harvested powers at the EH nodes under a constraint on thepower budget of the transmitter. We prove that the optimal transmit strategyemploys two beamforming vectors and scalar unit norm transmit symbols witharbitrary phase. To determine the beamforming vectors, we propose an iterativealgorithm based on a two-dimensional grid search, semi-definite relaxation, andsuccessive convex approximation. Our numerical results reveal that the proposeddesign outperforms two baseline schemes based on a linear EH model and a singlebeamforming vector, respectively. Finally, we observe that the harvested powerregion is convex and the power harvested at one EH node can be traded for ahigher harvested power at the other node.

Harvested Power Region of Two-user MISO WPT Systems With Non-linear EH Nodes