Wirelessly Powered Backscatter Communications: Waveform Design and SNR-Energy Tradeoff
Information Theory
2017-03-09 v1 Networking and Internet Architecture
math.IT
Abstract
This paper shows that wirelessly powered backscatter communications is subject to a fundamental tradeoff between the harvested energy at the tag and the reliability of the backscatter communication, measured in terms of SNR at the reader. Assuming the RF transmit signal is a multisine waveform adaptive to the channel state information, we derive a systematic approach to optimize the transmit waveform weights (amplitudes and phases) in order to enlarge as much as possible the SNRenergy region. Performance evaluations confirm the significant benefits of using multiple frequency components in the adaptive transmit multisine waveform to exploit the nonlinearity of the rectifier and a frequency diversity gain.
Cite
@article{arxiv.1703.02798,
title = {Wirelessly Powered Backscatter Communications: Waveform Design and SNR-Energy Tradeoff},
author = {Bruno Clerckx and Zati Bayani Zawawi and Kaibin Huang},
journal= {arXiv preprint arXiv:1703.02798},
year = {2017}
}
Comments
submitted for publication