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In this paper, we propose online discrete-rate discrete-power adaptation policies based on 1-bit channel feedback for energy harvesting (EH) wireless communications. The receiver periodically sends 1-bit feedback by comparing the channel power gain with a predetermined threshold. The EH transmitter correspondingly adjusts M-ary modulation level and transmission power based on 1-bit feedback and battery...
In energy harvesting (EH) wireless communications, full channel state information (CSI) at transmitter (TX) is generally needed to determine transmission power. In this paper, we propose a transmission power policy based on only 1-bit feedback of the CSI sent from the receiver (RX), for an EH communication system over Rayleigh fading channels. The RX periodically sends 1-bit feedback by comparing...
A new power management circuit which includes energy conversion sub-system (photovoltaic battery),energy storage sub-system(lithium-ion battery+ultracapacitor energy conversion sub-system) and power management sub-system is designed. The power management circuit provides electricity to the wireless sensor node. The energy conversion sub-system adopts four solar photovoltaic batteries to capture energy...
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