Imperial College London
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ProfessorBrunoClerckx

Faculty of Engineering, Department of Electrical and Electronic Engineering

Professor of Wireless Communications and Signal Processing
 
 
 
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Contact

 

+44 (0)20 7594 6234b.clerckx Website

 
 
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Location

 

816Electrical EngineeringSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Huang:2017:10.1109/TWC.2017.2767578,
author = {Huang, Y and Clerckx, B},
doi = {10.1109/TWC.2017.2767578},
journal = {IEEE Transactions on Wireless Communications},
pages = {415--429},
title = {Waveform Design for Wireless Power Transfer with Limited Feedback},
url = {http://dx.doi.org/10.1109/TWC.2017.2767578},
volume = {17},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Waveform design is a key technique to jointly exploit a beamforming gain, the channel frequency selectivity, and the rectifier nonlinearity, so as to enhance the end-to-end power transfer efficiency of wireless power transfer (WPT). Those waveforms have been designed, assuming perfect channel state information at the transmitter. This paper proposes two waveform strategies relying on limited feedback for multi-antenna multi-sine WPT over frequency-selective channels. In the waveform selection strategy, the energy transmitter (ET) transmits over multiple timeslots with every time a different waveform precoder within a codebook, and the energy receiver (ER) reports the index of the precoder in the codebook that leads to the largest harvested energy. In the waveform refinement strategy, the ET sequentially transmits two waveforms in each stage, and the ER reports one feedback bit indicating an increase/decrease in the harvested energy during this stage. Based on multiple one-bit feedback, the ET successively refines waveform precoders in a tree-structured codebook over multiple stages. By employing the framework of the generalized Lloyd’s algorithm, novel algorithms are proposed for both strategies to optimize the codebooks in both space and frequency domains. The proposed limited feedback-based waveform strategies are shown to outperform a set of baselines, achieving higher harvested energy.
AU  - Huang,Y
AU  - Clerckx,B
DO  - 10.1109/TWC.2017.2767578
EP  - 429
PY  - 2017///
SN  - 1536-1276
SP  - 415
TI  - Waveform Design for Wireless Power Transfer with Limited Feedback
T2  - IEEE Transactions on Wireless Communications
UR  - http://dx.doi.org/10.1109/TWC.2017.2767578
UR  - http://hdl.handle.net/10044/1/52408
VL  - 17
ER  -
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