Title :
Waveform optimization for Wireless Power Transfer with nonlinear energy harvester modeling
Author :
Bruno Clerckx;Ekaterina Bayguzina;David Yates;Paul D. Mitcheson
Author_Institution :
Comm. and Sig. Proc. Group, EEE Department, Imperial College London, United Kingdom
Abstract :
Far-field Wireless Power Transfer (WPT) and Simultaneous Wireless Information and Power Transfer (SWIPT) have attracted significant attention in the RF and communication communities. Despite the rapid progress, the problem of waveform design to enhance the output DC power of wireless energy harvester has received limited attention so far. In this paper, we bridge communication and RF design and derive novel multisine waveforms for multi-antenna wireless power transfer. The waveforms are adaptive to the channel state information and result from a posynomial maximization problem that originates from the non-linearity of the energy harvester. They are shown through realistic simulations to provide significant gains (in terms of harvested DC power) over state-of-the-art waveforms under a fixed transmit power constraint.
Keywords :
"Transmitting antennas","Optimization","Wireless communication","Radio frequency","Analytical models","Receiving antennas"
Conference_Titel :
Wireless Communication Systems (ISWCS), 2015 International Symposium on
Electronic_ISBN :
2154-0225
DOI :
10.1109/ISWCS.2015.7454345