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 SNR-energy 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.
| Original language | English |
|---|---|
| Journal | IEEE Communications Letters |
| DOIs | |
| Publication status | Accepted/In press - 2017 Jun 16 |
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Keywords
- Antennas
- Backscatter
- Backscatter Communications
- Frequency diversity
- Radio frequency
- Signal to noise ratio
- SNR-Energy Tradeoff
- Transmitters
- Waveform Design
- Wireless communication
- Wireless Power Transfer
ASJC Scopus subject areas
- Modelling and Simulation
- Computer Science Applications
- Electrical and Electronic Engineering
Cite this
Wirelessly Powered Backscatter Communications : Waveform Design and SNR-Energy Tradeoff. / Clercks, Bruno; Zawawi, Zati Bayani; Huang, Kaibin.
In: IEEE Communications Letters, 16.06.2017.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Wirelessly Powered Backscatter Communications
T2 - Waveform Design and SNR-Energy Tradeoff
AU - Clercks, Bruno
AU - Zawawi, Zati Bayani
AU - Huang, Kaibin
PY - 2017/6/16
Y1 - 2017/6/16
N2 - 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 SNR-energy 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.
AB - 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 SNR-energy 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.
KW - Antennas
KW - Backscatter
KW - Backscatter Communications
KW - Frequency diversity
KW - Radio frequency
KW - Signal to noise ratio
KW - SNR-Energy Tradeoff
KW - Transmitters
KW - Waveform Design
KW - Wireless communication
KW - Wireless Power Transfer
UR - http://www.scopus.com/inward/record.url?scp=85021797363&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85021797363&partnerID=8YFLogxK
U2 - 10.1109/LCOMM.2017.2716341
DO - 10.1109/LCOMM.2017.2716341
M3 - Article
JO - IEEE Communications Letters
JF - IEEE Communications Letters
SN - 1089-7798
ER -