Waveform Design for Wireless Power Transfer

@article{Clerckx2016WaveformDF,
  title={Waveform Design for Wireless Power Transfer},
  author={Bruno Clerckx and Ekaterina Bayguzina},
  journal={IEEE Transactions on Signal Processing},
  year={2016},
  volume={64},
  pages={6313-6328}
}
Far-field Wireless Power Transfer (WPT) has attracted significant attention in recent years. Despite the rapid progress, the emphasis of the research community in the last decade has remained largely concentrated on improving the design of energy harvester (so-called rectenna) and has left aside the effect of transmitter design. In this paper, we study the design of transmit waveform so as to enhance the dc power at the output of the rectenna. We derive a tractable model of the nonlinearity of… Expand
Modulation Design for Wireless Information and Power Transfer with Nonlinear Energy Harvester Modeling
  • Ekaterina Bayguzina, B. Clerckx
  • Computer Science, Mathematics
  • 2018 IEEE 19th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC)
  • 2018
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In this paper, a modulation scheme based on asymmetric phase-shift keying (PSK) is considered, which improves the SWIPT rate-energy tradeoff region significantly and opens the door to systematic modulation design tailored forSWIPT. Expand
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Two suboptimal solutions to the waveform design problem for a single-input single-output (SISO) radio-frequency (RF) wireless power transfer (WPT) system in frequency-selective channels are proposed, based on the frequency-domain maximal ratio transmission (MRT) principle and the sequential convex optimization (SCP) technique. Expand
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Experimental results fully validate the observations predicted from the theoretical signal designs and confirm the crucial and beneficial role played by the energy harvester nonlinearity in harvested DC power over conventional single-antenna/multi-ant Jenna continuous wave systems. Expand
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Two waveform strategies relying on limited feedback for multi-antenna multi-sine WPT over frequency-selective channels are proposed, and are shown to outperform a set of baselines, achieving higher harvested energy. Expand
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TLDR
This paper proposes a joint power waveforming and beamforming in the time domain for WPT, in which the waveforms on multiple transmit antennas driven by a common reference signal are designed to maximize the gain of energy delivery efficiency. Expand
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A balanced pre-equalizer that trades off between the peak-to-average power ratio (PAPR) and signal to noise ratio, maximizing the total PCE is proposed and the impact on the information rate of the analyzed waveforms is presented. Expand
Wireless Information and Power Transfer: Nonlinearity, Waveform Design, and Rate-Energy Tradeoff
  • B. Clerckx
  • Computer Science, Mathematics
  • IEEE Transactions on Signal Processing
  • 2018
TLDR
Analysis shows that modulated and unmodulated waveforms are not equally suitable for wireless power delivery, namely, modulation being beneficial in single-carrier transmissions but detrimental in multicarrier transmissions, and a tractable model of the rectifier nonlinearity is developed that is flexible enough to cope with general multicarriers modulated input waveforms. Expand
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From the model evaluation, it is deduced that EAs can be successfully applied to the waveform design optimization problem and can obtain the optimal solutions in the tested cases. Expand
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