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Maximizing Ergodic Throughput in Wireless Powered Communication Networks. (arXiv:1807.05543v1 [cs.IT])
来源于:arXiv
This paper considers a single-antenna wirelesspowered communication network
(WPCN) over a flat-fading channel. We show that, by using our probabilistic
harvestand-transmit (PHAT) strategy, which requires the knowledge of
instantaneous full channel state information (CSI) and fading probability
distribution, the ergodic throughput of this system may be greatly increased
relative to that achieved by the harvestthen-transmit (HTT) protocol. To do so,
instead of dividing every frame to the uplink (UL) and downlink (DL), the
channel is allocated to the UL wireless information transmission (WIT) and DL
wireless power transfer (WPT) based on the estimated channel power gain. In
other words, based on the fading probability distribution, we will derive some
thresholds that determine the association of a frame to the DL WPT or UL WIT.
More specifically, if the channel gain falls below or goes over these
thresholds, the channel will be allocated to WPT or WIT. Simulation results
verify the perfor 查看全文>>