Wavelet modulation for energy efficient wireless sensors networks with simultaneous wireless information and power transfer
This paper presents a Simultaneous wireless information and power transfer (SWIPT) system with dynamic power allocation (DPA). The system fills the gap in power splitting (PS) and time switching (TS) systems, where the different power requirements of running a senso...
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| Main Authors: | , , |
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| Format: | Conference or Workshop Item |
| Language: | English English |
| Published: |
IEEE
2021
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/90596/1/90596_Wavelet%20Modulation%20For%20Energy%20Efficient_conf.pdf http://irep.iium.edu.my/90596/7/90596_Wavelet%20Modulation%20for%20Energy%20Efficient%20Wireless%20Sensors%20Networks%20with%20Simultaneous%20Wireless%20Information%20and%20Power%20TransferScopus.pdf http://irep.iium.edu.my/90596/ https://ieeexplore-ieee-org.ezlib.iium.edu.my/document/9467184 |
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| Institution: | Universiti Islam Antarabangsa Malaysia |
| Language: | English English |
| Summary: | This paper presents a Simultaneous wireless
information and power transfer (SWIPT) system with dynamic power allocation (DPA). The system
fills the gap in power splitting (PS) and time switching (TS) systems, where the
different power requirements of running a sensor node (SN) and decoding information are overlooked.
In the presented system, the energy signal is carried on an unmodulated high power
continuous wave (CW) signal on the subcarriers at the carrier frequency. Similarly, the
information signal is carried on the remaining low-power subcarriers, reducing the
interference to external wireless networks. Moreover, at the receiver end, a separated
energy harvester and information decoder design are adopted. The receiver first combines the
received power from multiple antenna inputs and then splits the power between energy
harvesting and information decoding circuitries. Moreover, the information signal
is modulated using wavelet functions that have a better peak to average power ratio (PAPR) than
the conventional OFDM rectangular window. Finally, the presented system parameters, such as
data rates and the receiver’s energy harvester output, are illustrated and
discussed. Furthermore, the split design showed a substantial improvement in terms of
harvestable power compared to the integrated design. |
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