Abstract
Wireless power transfer and backscatter communications have emerged as promising solutions for energizing and communicating with power limited devices. Despite some progress in wirelessly powered backscatter communications, the focus has been concentrated on backscatter and energy harvester. Recently, significant progress has been made on the design of transmit multisine waveform, adaptive to the Channel State Information at the transmitter (CSIT), in point-to-point backscatter system. In this paper, we leverage the work and study the design of transmit multisine waveform in a multiuser backscatter system, made of one transmitter, one reader and multiple tags active simultaneously. We derive an efficient algorithm to optimize the transmit waveform so as to identify the tradeoff between the amount of energy harvested at the tags and the reliability of the communication, measured in terms of Signal-to-Interference-plus-Noise Ratio (SINR) at the reader. Performance with the optimized waveform based on linear and nonlinear energy harvester (EH) models are studied. Numerical results demonstrate the benefits of accounting for the energy harvester nonlinearity, multiuser diversity, frequency diversity and multisine waveform adaptive to the CSIT to enlarge the SINR-energy region.
| Original language | English |
|---|---|
| Journal | IEEE Transactions on Wireless Communications |
| DOIs | |
| Publication status | Accepted/In press - 2018 Jan 1 |
| Externally published | Yes |
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Keywords
- Backscatter
- Backscatter communications
- Interference
- multiuser communication
- nonlinear energy harvesting
- Numerical models
- Radio frequency
- Signal to noise ratio
- Transmitters
- waveform design
- Wireless communication
- wireless power transfer
ASJC Scopus subject areas
- Computer Science Applications
- Electrical and Electronic Engineering
- Applied Mathematics
Cite this
Multiuser Wirelessly Powered Backscatter Communications : Nonlinearity, Waveform Design and SINR-Energy Tradeoff. / Zawawi, Zati Bayani; Huang, Yang; Clercks, Bruno.
In: IEEE Transactions on Wireless Communications, 01.01.2018.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Multiuser Wirelessly Powered Backscatter Communications
T2 - Nonlinearity, Waveform Design and SINR-Energy Tradeoff
AU - Zawawi, Zati Bayani
AU - Huang, Yang
AU - Clercks, Bruno
PY - 2018/1/1
Y1 - 2018/1/1
N2 - Wireless power transfer and backscatter communications have emerged as promising solutions for energizing and communicating with power limited devices. Despite some progress in wirelessly powered backscatter communications, the focus has been concentrated on backscatter and energy harvester. Recently, significant progress has been made on the design of transmit multisine waveform, adaptive to the Channel State Information at the transmitter (CSIT), in point-to-point backscatter system. In this paper, we leverage the work and study the design of transmit multisine waveform in a multiuser backscatter system, made of one transmitter, one reader and multiple tags active simultaneously. We derive an efficient algorithm to optimize the transmit waveform so as to identify the tradeoff between the amount of energy harvested at the tags and the reliability of the communication, measured in terms of Signal-to-Interference-plus-Noise Ratio (SINR) at the reader. Performance with the optimized waveform based on linear and nonlinear energy harvester (EH) models are studied. Numerical results demonstrate the benefits of accounting for the energy harvester nonlinearity, multiuser diversity, frequency diversity and multisine waveform adaptive to the CSIT to enlarge the SINR-energy region.
AB - Wireless power transfer and backscatter communications have emerged as promising solutions for energizing and communicating with power limited devices. Despite some progress in wirelessly powered backscatter communications, the focus has been concentrated on backscatter and energy harvester. Recently, significant progress has been made on the design of transmit multisine waveform, adaptive to the Channel State Information at the transmitter (CSIT), in point-to-point backscatter system. In this paper, we leverage the work and study the design of transmit multisine waveform in a multiuser backscatter system, made of one transmitter, one reader and multiple tags active simultaneously. We derive an efficient algorithm to optimize the transmit waveform so as to identify the tradeoff between the amount of energy harvested at the tags and the reliability of the communication, measured in terms of Signal-to-Interference-plus-Noise Ratio (SINR) at the reader. Performance with the optimized waveform based on linear and nonlinear energy harvester (EH) models are studied. Numerical results demonstrate the benefits of accounting for the energy harvester nonlinearity, multiuser diversity, frequency diversity and multisine waveform adaptive to the CSIT to enlarge the SINR-energy region.
KW - Backscatter
KW - Backscatter communications
KW - Interference
KW - multiuser communication
KW - nonlinear energy harvesting
KW - Numerical models
KW - Radio frequency
KW - Signal to noise ratio
KW - Transmitters
KW - waveform design
KW - Wireless communication
KW - wireless power transfer
UR - http://www.scopus.com/inward/record.url?scp=85056345477&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85056345477&partnerID=8YFLogxK
U2 - 10.1109/TWC.2018.2879092
DO - 10.1109/TWC.2018.2879092
M3 - Article
AN - SCOPUS:85056345477
JO - IEEE Transactions on Wireless Communications
JF - IEEE Transactions on Wireless Communications
SN - 1536-1276
ER -